Method and device for monitoring state of coal mine tunnel roof

Abstract

The invention provides a coal mine tunnel roof state monitoring method and device, and relates to the technical field of tunnel safety monitoring. Obtaining the current monitoring value of each monitoring index of each monitoring position of the roadway roof, each risk grade critical value associated with the monitoring index, and historical monitoring data; determining the change trend and change speed of each monitoring index based on the monitoring value of each monitoring index of each monitoring position and historical monitoring data; determining the state type of the roadway roof based on the change trend of each monitoring index of each monitoring position; determining a risk level of the corresponding monitoring index based on each risk level critical value of each monitoring index and the monitoring value and the change speed of the monitoring index; and based on the state type of the roadway roof and the risk level of each monitoring index of each monitoring position, determining measures taken for the roadway roof. Therefore, accurate judgment of the state of the roof is realized, the probability of occurrence of roof fall accidents is effectively reduced, and the reliability and timeliness of roadway roof monitoring are improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of tunnel safety monitoring, and in particular to a method and device for monitoring the roof status of a coal mine tunnel. Background Art

[0002] Since the geological conditions and mining conditions of underground coal mine tunnels vary greatly, and the tunnel support is a hidden project, the stability of the tunnel roof is difficult to predict. Most tunnels have no particularly significant signs before the roof collapses, which greatly affects the safety level of coal mine production. At present, the tunnel roof monitoring method mainly relies on the monitoring value of the sensor, and the monitoring data is not fully utilized. It is impossible to rely on the existing data to judge the stability of the roof and prevent disasters, which seriously affects the safety of coal mine production. How to provide a coal mine tunnel roof status monitoring method that can make full use of historical monitoring data and its evolution trend, accurately and timely analyze the stability and status of the tunnel roof, and improve the safety level of coal mine production is a problem that needs to be solved urgently. Summary of the invention

[0003] The present invention provides a method and device for monitoring the status of a coal mine roadway roof.

[0004] According to one aspect of the present disclosure, a method for monitoring the state of a coal mine roadway roof is provided, comprising: Obtaining monitoring values ​​of multiple monitoring indicators at each monitoring position of the tunnel roof at the current moment, each risk level critical value associated with each of the monitoring indicators, and historical monitoring data of the monitoring indicators; Based on the monitoring value of each monitoring indicator at each monitoring location and the historical monitoring data, determining the change trend and change speed of the corresponding monitoring indicator; Determining the state type of the tunnel roof based on the change trend of each of the monitoring indicators at each of the monitoring positions; Determine the target risk level of each monitoring indicator at each monitoring location based on each risk level critical value associated with each monitoring indicator, and the monitoring value and change rate of the monitoring indicator, wherein the risk level critical value includes the monitoring value critical value and change rate critical value of the associated monitoring indicator; Based on the state type of the tunnel roof and the target risk level of each of the monitoring indicators at each of the monitoring locations, measures to be taken on the tunnel roof are determined.

[0005] According to another aspect of the present disclosure, a coal mine roadway roof status monitoring device is provided, comprising: An acquisition module, used to acquire the monitoring values ​​of multiple monitoring indicators at each monitoring position of the tunnel roof at the current moment, each risk level critical value associated with each of the monitoring indicators, and historical monitoring data of the monitoring indicators; A first determination module, configured to determine a change trend and a change speed of a corresponding monitoring indicator based on a monitoring value of each monitoring indicator at each monitoring location and historical monitoring data; A second determination module is used to determine the state type of the tunnel roof based on the change trend of each of the monitoring indicators at each of the monitoring positions; A third determination module is used to determine the target risk level of each monitoring indicator of each monitoring location based on each risk level critical value associated with each monitoring indicator, and the monitoring value and change rate of the monitoring indicator, wherein the risk level critical value includes the monitoring value critical value and the change rate critical value of the associated monitoring indicator; The fourth determination module is used to determine the measures to be taken on the tunnel roof based on the state type of the tunnel roof and the target risk level of each monitoring indicator at each monitoring position.

[0006] According to another aspect of the present disclosure, there is provided an electronic device, comprising: at least one processor; and, a memory communicatively coupled to the at least one processor; The memory stores instructions that can be executed by at least one processor, and the instructions are executed by at least one processor so that the at least one processor can execute the method of the above embodiment.

[0007] According to another aspect of the present disclosure, a non-transitory computer-readable storage medium storing computer instructions is provided, wherein the computer instructions are used to enable a computer to execute the method of the above embodiment.

[0008] The present disclosure provides a method and device for monitoring the state of a coal mine roadway roof. First, the monitoring values ​​of multiple monitoring indicators at each monitoring position of the roadway roof at the current moment, each risk level critical value associated with each monitoring indicator, and the historical monitoring data of the monitoring indicator are obtained, and then based on the monitoring value of each monitoring indicator at each monitoring position and the historical monitoring data, the change trend and change speed of the corresponding monitoring indicator are determined, and based on the change trend of each monitoring indicator at each monitoring position, the state type of the roadway roof is determined, and then based on each risk level critical value associated with each monitoring indicator, and the monitoring value and change speed of the monitoring indicator, the target risk level of each monitoring indicator at each monitoring position is determined, and finally based on the state type of the roadway roof and the target risk level of each monitoring indicator at each monitoring position, the measures to be taken for the roadway roof are determined. Therefore, by determining the changing trend of each monitoring indicator at each monitoring position of the tunnel roof, the state type of the tunnel roof is determined, and the risk level of each monitoring indicator is determined. Based on the changing trend and risk level of each monitoring indicator at each monitoring position, the measures to be taken on the tunnel roof are determined, thereby achieving accurate judgment of the state of the tunnel roof and taking corresponding prevention and control measures in time, effectively reducing the probability of tunnel roof collapse accidents and improving the reliability and timeliness of tunnel roof monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0010] Figure 1 A schematic diagram of a process of a coal mine roadway roof status monitoring method provided by an embodiment of the present disclosure; Figure 2 A schematic diagram of a process of a coal mine roadway roof status monitoring method provided by an embodiment of the present disclosure; Figure 3 A schematic diagram of a process of a coal mine roadway roof status monitoring method provided by an embodiment of the present disclosure; Figure 4 A schematic diagram of the evolution curve of anchor bolt and cable load and roof separation when the roof state type provided in the present disclosure is overall stable; Figure 5 A schematic diagram of the evolution curve of anchor bolt and cable load and roof delamination when the roof state type provided in the present disclosure is a shallow delamination failure type; Figure 6 A schematic diagram of the evolution curve of anchor bolt and cable load and roof delamination when the roof state type provided in the present disclosure is deep delamination failure type; Figure 7 A schematic diagram of the evolution curve of anchor bolt and cable load and roof delamination when the roof state type provided in the present disclosure is the overall delamination failure type; Figure 8 A schematic diagram of the evolution curve of anchor bolt and cable load and roof delamination when the roof state type provided in the present disclosure is anchor bolt loss and damage type; Fig. 9 A schematic diagram of the evolution curve of anchor rod anchor cable load and roof delamination when the roof state type provided in the present disclosure is anchor cable loss and damage type; Fig.10 A schematic diagram of the evolution curve of anchor bolt and cable load and roof separation layer when the roof state type provided in the present disclosure is the overall anchor loss failure type; Fig.11 A schematic diagram of the evolution curve of anchor bolt and cable load and roof detachment when the roof state type provided in the present disclosure is anchored outer detachment destruction type; Fig.12 A schematic diagram of a process of a coal mine roadway roof status monitoring method provided by an embodiment of the present disclosure; Fig.13 A schematic diagram of a process of a coal mine roadway roof status monitoring method provided by an embodiment of the present disclosure; Fig.14 A schematic diagram of the structure of a coal mine tunnel roof status monitoring device provided by an embodiment of the present disclosure; Fig.15 A schematic diagram of the structure of an electronic device provided in an embodiment of the present disclosure.

[0011] The above drawings show clear embodiments of the present disclosure, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present disclosure in any way, but to illustrate the concepts of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0012] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0013] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.) and signals involved in this disclosure are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions.

[0014] It should be noted that the acquisition, transmission, storage, use, and processing of data in the technical solution disclosed in this disclosure are in compliance with the relevant provisions of national laws and regulations.

[0015] It should be noted that in the embodiments of the present disclosure, certain software, components, models and other existing solutions in the industry may be mentioned, which should be regarded as exemplary. Their purpose is only to illustrate the feasibility of implementing the technical solution of the present disclosure, but it does not mean that the applicant has or will necessarily use the solution.

[0016] The coal mine roadway roof status monitoring method and device according to the disclosed embodiment will be described in detail below with reference to the accompanying drawings.

[0017] Figure 1 A schematic flow chart of a method for monitoring the status of a coal mine tunnel roof provided in an embodiment of the present disclosure.

[0018] like Figure 1 As shown, the method includes: Step 101, obtaining the monitoring values ​​of multiple monitoring indicators at each monitoring position of the tunnel roof at the current moment, each risk level critical value associated with each monitoring indicator, and historical monitoring data of the monitoring indicators.

[0019] It should be noted that the tunnel roof in the present disclosure can be determined according to actual needs. For example, it can be the tunnel roof of accident-prone areas such as the excavation working face, coal mining working face, large-span tunnel, structural belt, old empty (tunnel) area, stress concentration area, and tunnel maintenance site, and the present disclosure does not limit this.

[0020] The monitoring position may be a position for monitoring the state and stability of the tunnel roof, which may be a position where an anchor rod is located and a position where an anchor cable is located.

[0021] Among them, the monitoring index can be an index used to determine the state and stability of the tunnel roof, which can be anchor load, anchor cable load, shallow roof delamination and deep roof delamination.

[0022] The risk level critical value may be a monitoring value critical value used to determine the risk level of the monitoring indicator, which may include a monitoring value critical value and a change speed critical value of the monitoring indicator.

[0023] It should be noted that each risk level critical value corresponding to each monitoring indicator can be determined according to actual conditions. Each risk level critical value corresponding to each monitoring indicator can include a safety level critical value, a danger level critical value, and a high danger level critical value, etc. This disclosure does not limit this.

[0024] It should be noted that the historical monitoring data may be the historical monitoring data from the time when each anchor rod and anchor cable of the tunnel roof is working stably to the current time, which may include multiple historical anchor rod load monitoring values ​​at the location of each anchor rod, multiple historical roof shallow delamination monitoring values, and multiple historical anchor cable load monitoring values ​​at the location of each anchor cable, and multiple historical roof deep delamination monitoring values.

[0025] In the present disclosure, when monitoring the status of the coal mine roadway roof, it is possible to first obtain the monitoring values ​​of multiple monitoring indicators at each monitoring position of the roadway roof at the current moment, the critical value of each risk level associated with each monitoring indicator, and the historical monitoring data of the monitoring indicators, so that the status and stability of the roadway roof can be analyzed in real time to improve the safety of coal mine production.

[0026] Step 102: Based on the monitoring value of each monitoring indicator at each monitoring location and historical monitoring data, determine the change trend and change speed of the corresponding monitoring indicator.

[0027] The changing trend of the monitoring indicator may be an increasing trend, a decreasing trend, or a stable trend, which is not limited in the present disclosure.

[0028] Among them, the changing speed of the monitoring indicator can be used to reflect the speed of the changing trend of the monitoring indicator.

[0029] In the present disclosure, after obtaining the monitoring value and historical monitoring data of each monitoring indicator at each monitoring location, the monitoring value and historical monitoring data of each monitoring indicator can be analyzed in order of the monitoring time of the data from earliest to latest. When the monitoring data of any monitoring indicator continues to increase, or first remains stable (it can also have a small change amplitude) and then continues to increase, it can be determined that the change trend of any monitoring indicator is an increasing trend. When the monitoring data of any monitoring indicator first remains stable or increases slightly and then begins to decrease continuously, it can be determined that the change trend of any monitoring indicator is a decreasing trend. When the monitoring data of any monitoring indicator remains stable or has a small change amplitude, it can be determined that the change trend of any monitoring indicator is a stable trend.

[0030] In the present disclosure, after obtaining the monitoring value and historical monitoring data of each monitoring indicator at each monitoring location, the monitoring value of the monitoring indicator at the current moment and multiple historical monitoring values ​​can be linearly fitted, and then the changing speed of the monitoring indicator can be determined based on the slope. The present disclosure does not limit this.

[0031] Step 103, determining the state type of the tunnel roof based on the change trend of each monitoring indicator at each monitoring position.

[0032] The state type of the tunnel roof may be a type used to characterize the stability state of the tunnel roof, which may be determined according to actual conditions. For example, it may be a stable type, a shallow separation damage type, or a deep separation damage type, etc., which is not limited in the present disclosure.

[0033] In the present disclosure, after determining the changing trend of each monitoring indicator at each monitoring position in the tunnel roof, the state type of the tunnel roof can be determined based on the changing trend of each monitoring indicator, thereby realizing a method for monitoring the tunnel roof state based on the changing trend of the monitoring indicators, improving data utilization, and improving the accuracy and reliability of tunnel roof state monitoring.

[0034] Step 104 , determining the target risk level of each monitoring indicator at each monitoring location based on each risk level critical value associated with each monitoring indicator, and the monitoring value and change rate of the monitoring indicator.

[0035] Among them, the risk level critical value includes the monitoring value critical value and the change rate critical value of the associated monitoring indicator.

[0036] The specific setting and classification of risk levels can be determined according to actual needs. For example, risk levels can include safety level, danger level, and high danger level, etc., which are not limited in the present disclosure.

[0037] It should be noted that the monitoring value critical value and the change speed critical value included in each risk level critical value can be determined according to the corresponding monitoring indicators and actual conditions, and the present disclosure does not limit this.

[0038] In the present disclosure, after determining the change speed of each monitoring indicator at each monitoring position, in order to accurately and reliably determine the state of the tunnel roof and take corresponding measures in time to effectively reduce the probability of tunnel roof collapse accidents, the monitoring value and change speed of each monitoring indicator at each monitoring position in the tunnel roof at the current moment can be monitored for risk level to determine the risk level of the monitoring indicator, and then the tunnel roof state can be warned. Therefore, the target risk level of each monitoring indicator at each monitoring position can be determined based on each risk level critical value associated with each monitoring indicator, as well as the monitoring value and change speed of the monitoring indicator.

[0039] Step 105 , based on the state type of the tunnel roof and the target risk level of each monitoring indicator at each monitoring position, determine the measures to be taken on the tunnel roof.

[0040] The target risk level may be the final risk level of each monitoring indicator at each monitoring location.

[0041] Among them, the measures taken for the tunnel roof can be support and reinforcement measures for the tunnel roof, such as anchor rod and cable reinforcement or anchor injection, shallow grouting reinforcement of the roof, etc., which are not limited in the present disclosure.

[0042] In the present disclosure, after determining the target risk level of each monitoring indicator at each monitoring location, the measures to be taken on the tunnel roof can be determined based on the state type of the tunnel roof and the target risk level of each monitoring indicator at each monitoring location, thereby achieving accurate and timely analysis of the tunnel roof state based on the historical monitoring data of the tunnel roof and the changing trend of the monitoring indicators, thereby improving the safety factor of the tunnel roof and effectively reducing the probability of tunnel roof collapse accidents.

[0043] It should be noted that after determining the measures to be taken on the tunnel roof, the specific damage location of the tunnel roof can be determined based on the monitoring position, and corresponding measures can be implemented. After the measures are implemented, each monitoring indicator of each monitoring position in the roof continues to be monitored to determine whether the roof has stabilized. If it is stable, continue to monitor; if it is unstable, continue to implement measures on the roof until the roof is stable, thereby improving the safety of the tunnel roof. The present disclosure does not limit this.

[0044] In the disclosed embodiment, first, the monitoring values ​​of multiple monitoring indicators at each monitoring position of the tunnel roof at the current moment, each risk level critical value associated with each monitoring indicator, and the historical monitoring data of the monitoring indicators are obtained, and then based on the monitoring value of each monitoring indicator at each monitoring position and the historical monitoring data, the change trend of the corresponding monitoring indicator is determined, and based on the change trend and change speed of each monitoring indicator at each monitoring position, the state type of the tunnel roof is determined, and then based on each risk level critical value associated with each monitoring indicator, and the monitoring value and change speed of the monitoring indicator, the target risk level of each monitoring indicator at each monitoring position is determined, and finally based on the state type of the tunnel roof and the target risk level of each monitoring indicator at each monitoring position, the measures to be taken on the tunnel roof are determined. Therefore, by determining the changing trend of each monitoring indicator at each monitoring position of the tunnel roof, the state type of the tunnel roof is determined, and the risk level of each monitoring indicator is determined. Based on the changing trend and risk level of each monitoring indicator at each monitoring position, the measures to be taken on the tunnel roof are determined, thereby achieving accurate judgment of the state of the tunnel roof and taking corresponding prevention and control measures in time, effectively reducing the probability of tunnel roof collapse accidents and improving the reliability and timeliness of tunnel roof monitoring.

[0045] Figure 2 A schematic flow chart of a method for monitoring the status of a coal mine tunnel roof provided in an embodiment of the present disclosure.

[0046] like Figure 2As shown, the method includes: Step 201, obtain the monitoring values ​​of multiple monitoring indicators at each monitoring position of the tunnel roof at the current moment, each risk level critical value associated with each monitoring indicator, and the historical monitoring data of the monitoring indicators, wherein the monitoring position includes the location of the anchor rod and the location of the anchor cable, and the monitoring indicators include the anchor rod load, the anchor cable load, the shallow delamination of the roof, and the deep delamination of the roof.

[0047] It should be noted that the shallow delamination and deep delamination of the roof can be determined by the roof delamination meter pre-installed at the location of the anchor rods and anchor cables. The positional relationship and layout plan between the anchor rods and anchor cables and the roof delamination meter can be determined according to actual needs, and the present disclosure does not limit this.

[0048] It should be noted that the installation position and method of each anchor rod and anchor cable in the tunnel roof can be determined according to the geological conditions, mining conditions and support conditions of the tunnel, and the present disclosure does not limit this.

[0049] Step 202: Based on the monitoring value of each monitoring indicator at each monitoring location and historical monitoring data, determine the change trend and change speed of the corresponding monitoring indicator.

[0050] The specific implementation forms of step 201 to step 202 can refer to the detailed descriptions in other embodiments of the present disclosure, and will not be described in detail here.

[0051] Step 203, based on the change trend of the anchor load at each anchor position and the change trend of the shallow delamination of the roof, determine the state of the shallow surrounding rock of the roof within and outside the action range of each anchor.

[0052] The state of the shallow surrounding rock of the roof may be a stable state or an unstable state, which is not limited in the present disclosure.

[0053] It should be noted that the change trend of the anchor load at each anchor position and the change trend of the shallow delamination of the top plate can be determined according to actual conditions, and the present disclosure does not limit this.

[0054] It should be noted that the change trend of the anchor load can reflect the anchor support effect, and the change trend of the shallow delamination of the roof can directly reflect the stability of the shallow surrounding rock of the roof. Usually, the change trend of the anchor load is positively correlated with the change trend of the shallow delamination of the roof, that is, when the shallow delamination of the roof increases, the anchor load also increases. In the process of tunnel support, the anchor load and the shallow delamination of the roof can be in a dynamic equilibrium state. When the anchor provides sufficient support force, the increase of the shallow delamination of the roof can be suppressed. When the shallow delamination of the roof increases, the anchor needs to provide more support force to maintain the stability of the tunnel roof. Therefore, the present disclosure can determine the state of the shallow surrounding rock of the roof within and outside the action range of each anchor through the change trend of the anchor load at each anchor position and the change trend of the shallow delamination of the roof.

[0055] In some possible implementation forms, when the anchor load change trend at any anchor position and the shallow delamination change trend of the roof remain stable, it can be determined that the state of the shallow surrounding rock of the roof within and outside the action range of any anchor is stable, and the risk of instability is extremely low.

[0056] In some possible implementation forms, when the change trend of the anchor load at any anchor position and the change trend of the shallow delamination of the roof are both increasing, it can be determined that the shallow delamination of the roof is gradually increasing. In order to provide sufficient supporting force to keep the roof stable, the anchor load also increases accordingly. At this time, it can be determined that the state of the shallow surrounding rock within the action range of any anchor is unstable, and the roof has a certain risk of local instability.

[0057] In some possible implementation forms, when the anchor load at the location of any anchor is changing in a decreasing trend and the shallow delamination of the roof is changing in an increasing trend, at this time, it can be determined that the state of the shallow surrounding rock of the roof within the action range of any anchor is that the range of surrounding rock damage continues to expand to the anchoring section of any anchor, and the effect of the anchor is getting smaller and smaller. In this case, if timely measures are not taken, the deep delamination of the roof will begin to increase, and the roof will have the risk of accumulation of debris and expansion until the roof collapses.

[0058] It should be noted that when the anchor load change trend at the location of any anchor is a decreasing trend, and the shallow delamination trend of the top plate is an increasing trend, it may also be affected by factors such as the anchoring position of any anchor, water, etc., resulting in serious attenuation of the anchoring force of the anchor and the effect of the anchor becoming smaller and smaller. The present disclosure does not limit this.

[0059] In some possible implementation forms, when the anchor load change trend at the location of any anchor is increasing, and the shallow delamination of the roof tends to remain stable, at this time, it can be determined that the state of the shallow surrounding rock within the action range of any anchor is stable, but the integrity of the roof surrounding rock within the anchoring range of any anchor is good, but significant delamination may occur outside the anchoring range, and there is a certain risk of overall collapse of the roof over a larger range.

[0060] Step 204, based on the change trend of the anchor load at the location of each anchor and the change trend of the deep delamination of the roof, determine the state of the deep surrounding rock of the roof within and outside the action range of each anchor.

[0061] It should be noted that the change trend of the anchor load at each anchor position and the change trend of the deep delamination of the top plate can be determined according to actual conditions, and the present disclosure does not limit this.

[0062] It should be noted that the changing trend of the anchor load can reflect the supporting effect of the support structure on the surrounding rock of the roof, and the changing trend of the deep delamination of the roof can directly reflect the stability state of the deep surrounding rock of the roof. The changing trend of the anchor load is positively correlated with the changing trend of the deep delamination of the roof. That is to say, with the increase of the disturbance and displacement of the surrounding rock of the roof, the anchor load will also increase accordingly, and the deep delamination of the roof will also increase. When the anchor load increases, it can be said that the restraining effect of the support structure on the surrounding rock of the roof is enhanced, which helps to reduce the occurrence of deep delamination of the roof. On the contrary, when the anchor load decreases, it can be said that the supporting effect of the support structure is weakened, which may lead to an increase in the amount of deep delamination of the roof. Therefore, the present disclosure can determine the state of the deep surrounding rock of the roof based on the changing trend of the anchor load and the changing trend of the deep delamination of the roof.

[0063] In some possible implementation forms, when the anchor load change trend at any anchor position and the deep delamination change trend of the roof remain stable, it can be determined that the deep surrounding rock state of the roof within and outside the action range of any anchor is stable.

[0064] In some possible implementation forms, when the changing trends of the anchor load at any anchor position and the deep delamination of the roof are both increasing, it can be determined that the deep delamination of the roof is gradually increasing. In order to provide sufficient supporting force to keep the roof stable, the anchor load also increases accordingly. At this time, it can be determined that the state of the deep surrounding rock within the action range of any anchor is unstable, that is, the deep surrounding rock of the roof is prone to delamination and dislocation, and the roof is at risk of deep delamination and instability.

[0065] In some possible implementation forms, when the anchor load change trend at the location of any anchor cable is a decreasing trend, and the deep delamination change trend of the roof is an increasing trend, at this time, it can be determined that the state of the deep surrounding rock of the roof within the action range of any anchor cable is that the range of surrounding rock damage continues to expand to the anchoring section of any anchor cable, the anchoring force of the anchor cable decreases, the supporting effect is greatly reduced, the risk of failure is high, the roof state is relatively dangerous, and there is a risk of overall delamination damage or even collapse of the roof surrounding rock.

[0066] In some possible implementation forms, when the anchor load change trend at the location of any anchor is increasing and the deep delamination trend of the roof is stable, it is determined that the state of the deep surrounding rock within the action range of any anchor is stable, and delamination occurs in the deeper surrounding rock of the roof outside the action range of any anchor.

[0067] Step 205, based on the state of the shallow surrounding rock of the roof within and outside the action range of each anchor rod, and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable, determine the state type of the tunnel roof.

[0068] In the present disclosure, after determining the state of the shallow surrounding rock of the roof within and outside the action range of each anchor rod, and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable, the state type of the tunnel roof can be determined based on the state of the shallow surrounding rock of the roof within and outside the action range of each anchor rod, and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable, thereby improving the accuracy and reliability of the tunnel roof state monitoring and effectively reducing the probability of roof collapse accidents.

[0069] Step 206, determining the target risk level of each monitoring indicator at each monitoring location based on each risk level critical value associated with each monitoring indicator, and the monitoring value and change rate of the monitoring indicator.

[0070] Among them, the risk level critical value includes the monitoring value critical value and the change rate critical value of the associated monitoring indicator.

[0071] Step 207, based on the state type of the tunnel roof and the target risk level of each monitoring indicator at each monitoring position, determine the measures to be taken on the tunnel roof.

[0072] The specific implementation forms of step 206 to step 207 can refer to the detailed descriptions in other embodiments of the present disclosure, and will not be described in detail here.

[0073] In the disclosed embodiment, firstly, the monitoring values ​​of multiple monitoring indicators at each monitoring position of the tunnel roof at the current moment, the critical value of each risk level associated with each monitoring indicator, and the historical monitoring data of the monitoring indicator are obtained, and based on the monitoring value of each monitoring indicator at each monitoring position and the historical monitoring data, the change trend and change speed of the corresponding monitoring indicator are determined, and then based on the anchor load change trend at each anchor position and the change trend of the shallow delamination of the roof, the state of the shallow surrounding rock of the roof within and outside the action range of each anchor is determined, and based on the anchor load change trend at each anchor position and the change trend of the shallow delamination of the roof, the state of the shallow surrounding rock of the roof within and outside the action range of each anchor is determined. Based on the changing trend of deep delamination of the roof, the deep surrounding rock state of the roof within and outside the action range of each anchor cable is determined. Then, based on the shallow surrounding rock state of the roof within and outside the action range of each anchor, and the deep surrounding rock state of the roof within and outside the action range of each anchor cable, the state type of the tunnel roof is determined. Based on the critical value of each risk level associated with each monitoring indicator, as well as the monitoring value and change rate of the monitoring indicator, the target risk level of each monitoring indicator at each monitoring position is determined. Finally, based on the state type of the tunnel roof and the target risk level of each monitoring indicator at each monitoring position, the measures to be taken on the tunnel roof are determined. Therefore, the state of the shallow surrounding rock of the tunnel roof is determined based on the changing trend of the anchor load of the tunnel roof and the changing trend of the shallow delamination of the roof, and the state of the deep surrounding rock of the tunnel roof is determined based on the changing trend of the anchor load of the tunnel roof and the changing trend of the deep delamination of the roof, and then the state type of the tunnel roof is determined. After respectively determining the risk levels of the anchor load, anchor load, shallow delamination of the roof and deep delamination of the roof, the measures to be taken on the tunnel roof are determined based on the state type of the tunnel roof and the risk level of each monitoring indicator, thereby improving the reliability and accuracy of the tunnel roof state monitoring and improving the safety of the tunnel roof.

[0074] Figure 3 A schematic flow chart of a method for monitoring the status of a coal mine roadway roof provided in an embodiment of the present disclosure.

[0075] like Figure 3 As shown, the method includes: Step 301, obtain the monitoring values ​​of multiple monitoring indicators at each monitoring position of the tunnel roof at the current moment, the critical value of each risk level associated with each monitoring indicator, and the historical monitoring data of the monitoring indicators, wherein the monitoring position includes the location of the anchor rod and the location of the anchor cable, and the monitoring indicators include the anchor rod load, the anchor cable load, the shallow delamination of the roof, and the deep delamination of the roof.

[0076] Step 302: Determine the change trend and change speed of the corresponding monitoring indicator based on the monitoring value of each monitoring indicator at each monitoring location and the historical monitoring data.

[0077] Step 303, based on the change trend of the anchor load at each anchor position and the change trend of the shallow delamination of the roof, determine the state of the shallow surrounding rock of the roof within and outside the action range of each anchor.

[0078] Step 304, based on the change trend of the anchor load at the location of each anchor and the change trend of the deep delamination of the roof, determine the state of the deep surrounding rock of the roof within and outside the action range of each anchor.

[0079] The specific implementation forms of steps 301 to 304 can refer to the detailed descriptions in other embodiments of the present disclosure, and will not be described in detail here.

[0080] Step 305, obtaining a preset classification standard of roof status types.

[0081] Among them, the classification standards of roof state types may include the shallow surrounding rock state of the roof and the deep surrounding rock state of the roof, and the corresponding relationship between the roof state types, which can be determined according to actual conditions, and the present disclosure does not limit this.

[0082] In some possible implementation forms, the classification criteria of the roof status type may include at least one of the following: Figures 4 to 11 As shown, in Figures 4 to 11 In the equation, F is used to represent the load and S is used to represent the separation value: When the state of the shallow surrounding rock of the roof within and outside the action range of each anchor rod and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable are both stable, the roof state type is determined to be the overall stable type, such as Figure 4 As shown, Figure 4 The schematic diagram of the evolution curve of anchor bolt and cable load and roof separation layer when the roof state type provided in the present disclosure is overall stable type, Figure 4 In this case, the load of anchor rods and cables remains stable or changes slightly (the range of small changes can be determined according to actual conditions), and the shallow and deep separation layers of the roof are small and remain stable. In this case, the roof is in a stable state and the risk of instability is extremely low. Figure 4 This is only an example and the present disclosure is not limited to this; When the state of the shallow surrounding rock of the roof within the action range of any anchor is unstable, and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable is stable, the roof state type is determined to be the shallow delamination failure type, such as Figure 5 As shown, Figure 5 The schematic diagram of the evolution curve of anchor bolt and cable load and roof delamination when the roof state type provided in the present disclosure is shallow delamination failure type, Figure 5In the case of anchor bolt load, after being stable in the early stage, it begins to increase, and the cable load is basically stable or increases slowly with a small amplitude. At this time, the shallow surrounding rock separation gradually increases, while the deep surrounding rock separation remains stable. It is determined that the shallow surrounding rock within the action range of the anchor bolt is unstable, and the deep surrounding rock remains basically stable. In this case, there is a certain risk of local instability of the roof, among which, Figure 5 This is only an example and the present disclosure is not limited to this; When the state of the shallow surrounding rock of the roof within and outside the action range of each anchor is stable, and the state of the deep surrounding rock of the roof within the action range of any anchor cable is unstable, the roof state type is determined to be the deep delamination failure type, such as Figure 6 As shown, Figure 6 The schematic diagram of the evolution curve of anchor bolt and cable load and roof delamination when the roof state type provided in the present disclosure is deep delamination failure type, Figure 6 In the case of the anchor load remaining stable or changing slightly, the shallow surrounding rock separation remaining stable, while the anchor load begins to increase continuously, and the deep surrounding rock separation continues to increase. It can be determined that the shallow surrounding rock has good integrity and is not easy to separate, while the deep surrounding rock is easy to separate and dislocate. In this case, the roof is at risk of overall separation and instability of the deep surrounding rock. Figure 6 This is only an example and the present disclosure is not limited to this; When the state of the shallow surrounding rock of the roof within the action range of any anchor rod and the state of the deep surrounding rock of the roof within the action range of any anchor cable are both unstable, the roof state type is determined to be the overall delamination failure type, such as Figure 7 As shown, Figure 7 The schematic diagram of the evolution curve of anchor bolt and cable load and roof delamination when the roof state type provided in the present disclosure is the overall delamination failure type, Figure 7 In the process, the shallow and deep delamination of the roof continued to develop, the load of the anchor rods and cables increased, and if not intervened in time, the anchor rods and cables would be at risk of breaking or becoming unanchored, and the surrounding rock stability would be at a high risk. Figure 7 This is only an example and the present disclosure is not limited to this; When the state of the shallow surrounding rock of the roof within the action range of any anchor is that the surrounding rock damage range continues to extend to the anchoring section of the corresponding anchor, and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable is stable, the roof state type is determined to be the anchor failure type, such as Figure 8 As shown, Figure 8 The schematic diagram of the evolution curve of anchor cable load and roof separation layer when the roof state type provided by the present invention is anchor failure type, Figure 8In the above situation, the bolt load remains stable or increases slightly in the early stage and then begins to decrease. The shallow delamination of the roof continues to increase, the anchor load is basically stable or changes slightly, and the deep delamination of the roof remains basically stable. In this case, it can be determined that the surrounding rock damage within the action range of the bolt continues to extend to the anchoring section of the bolt, or due to the influence of factors such as the anchoring layer and water, the anchoring force of the bolt is seriously attenuated, and the effect of the bolt is getting smaller and smaller. If no timely measures are taken, the deep delamination will begin to increase, the anchor load will gradually increase, the surrounding rock damage range will continue to expand to the depth, the roof state is relatively dangerous, and there is a risk of accumulation of debris and expansion until the roof collapses. Figure 8 This is only an example and the present disclosure is not limited to this; When the state of the shallow surrounding rock of the roof within and outside the action range of each anchor is stable, and the state of the deep surrounding rock of the roof within the action range of any anchor cable is that the surrounding rock damage range continues to extend to the anchoring section of the corresponding anchor cable, the roof state type is determined to be the anchor cable loss damage type, such as Fig. 9 As shown, Fig. 9 The schematic diagram of the evolution curve of anchor cable load and roof separation layer when the roof state type provided by the present invention is anchor cable loss and damage type, Fig. 9 In the process, the bolt load basically remains stable, or fluctuates slightly, the shallow separation layer remains stable, and the anchor cable is affected by factors such as the lithology and water of the anchoring layer, and the anchoring performance is poor. As time goes by and the mine pressure appears, the anchor cable load remains stable or increases slightly in the early stage and then begins to gradually decrease, and the deep separation layer gradually increases. It can be determined that the anchoring force of the anchor cable decreases, the supporting effect is greatly reduced, the risk of failure is high, the roof state is relatively dangerous, and there is a risk of large-scale surrounding rock overall separation damage or even collapse. Among them, Fig. 9 This is only an example and the present disclosure is not limited to this; When the state of the shallow surrounding rock of the roof within the action range of any anchor rod is that the surrounding rock damage range continues to extend to the anchoring section of the corresponding anchor rod, and the state of the deep surrounding rock of the roof within the action range of any anchor cable is that the surrounding rock damage range continues to extend to the anchoring section of the corresponding anchor cable, the roof state type is determined to be the overall anchor loss damage type, such as Fig.10 As shown, Fig.10 The schematic diagram of the evolution curve of anchor bolt and cable load and roof separation layer when the roof state type provided in the present disclosure is the overall anchor loss failure type, Fig.10 In the case of extremely soft rock, strong dynamic pressure, strong impact load, etc., the shallow and deep separation of the roof continues to increase. The anchor load increases to a certain extent in the early stage, but as the damage range of the surrounding rock continues to increase, the anchor load begins to gradually decrease. As the damage range expands to the anchor cable anchoring section, the anchor load also gradually decreases. In this state, the supporting effect of the anchor rod and the anchor cable becomes smaller and smaller until it fails. The stability of the roof surrounding rock is very poor and is at a relatively unstable risk. There is a risk of large-scale overall collapse. Among them, Fig.10 This is only an example and the present disclosure is not limited to this; When the state of the shallow surrounding rock of the roof within the action range of any anchor is stable, and the state of the deep surrounding rock of the roof within the action range of any anchor cable is stable, and the state of the deeper surrounding rock of the roof outside the action range of any anchor cable is delamination, the roof state type is determined to be the anchorage external delamination failure type, such as Fig.11 As shown, Fig.11 The schematic diagram of the evolution curve of anchor bolt and cable load and roof detachment when the roof state type provided in the present disclosure is anchored outer detachment destruction type, Fig.11 In the case of a large coal seam or direct roof thickness, the anchor bolts and cables are anchored in the top coal or thick direct roof. Within the anchoring range (i.e., the action range of the anchor bolts and cables), there is no obvious separation in the shallow and deep parts, or a small separation occurs and then remains stable. The anchor bolt and cable loads begin to increase gradually after remaining stable or changing slightly in the early stage. In this case, it can be determined that significant separation occurs outside the anchoring range (i.e., outside the action range of the anchor bolts and cables). The integrity of the surrounding rock within the anchoring range is good, and there is a certain risk of overall collapse of the roof in a large range. Fig.11 This is only an example and the present disclosure is not limited thereto.

[0083] Step 306, based on the classification standard, the state of the shallow surrounding rock of the roof within and outside the action range of each anchor rod and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable, determine the state type of the tunnel roof.

[0084] In the present disclosure, after obtaining the classification standard of the roof state type, the state type of the tunnel roof can be determined based on the classification standard, the state of the shallow surrounding rock of the roof within and outside the action range of each anchor rod, and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable. For example, when the state of the shallow surrounding rock of the roof within the action range of any anchor rod is unstable, and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable is stable, according to the classification standard, it can be determined that the state type of the tunnel roof is a shallow delamination damage type, and the position of the roof where the shallow delamination damage type occurs is the position of any anchor rod, so that the state of the tunnel roof can be accurately and timely determined, and the reliability of the monitoring of the tunnel roof state can be improved.

[0085] Step 307 , determining the target risk level of each monitoring indicator at each monitoring location based on each risk level critical value associated with each monitoring indicator, and the monitoring value and change rate of the monitoring indicator.

[0086] Among them, the risk level critical value includes the monitoring value critical value and the change rate critical value of the associated monitoring indicator.

[0087] Step 308, based on the state type of the tunnel roof and the target risk level of each monitoring indicator at each monitoring position, determine the measures to be taken on the tunnel roof.

[0088] The specific implementation forms of step 307 to step 308 can refer to the detailed descriptions in other embodiments of the present disclosure, and will not be described in detail here.

[0089] In the disclosed embodiment, firstly, the monitoring values ​​of multiple monitoring indicators at each monitoring position of the tunnel roof at the current moment, the critical value of each risk level associated with each monitoring indicator, and the historical monitoring data of the monitoring indicator are obtained, and based on the monitoring value of each monitoring indicator at each monitoring position and the historical monitoring data, the change trend and change speed of the corresponding monitoring indicator are determined, and then based on the anchor load change trend at each anchor position and the change trend of the shallow delamination of the roof, the state of the shallow surrounding rock of the roof within and outside the action range of each anchor is determined, and based on the anchor load change trend at each anchor position and the change trend of the deep delamination of the roof, Determine the deep surrounding rock state of the roof within and outside the action range of each anchor cable, then obtain the preset classification standard of the roof state type, and based on the classification standard, the shallow surrounding rock state of the roof within and outside the action range of each anchor and the deep surrounding rock state of the roof within and outside the action range of each anchor cable, determine the state type of the tunnel roof, finally, based on each risk level critical value associated with each monitoring indicator, as well as the monitoring value and change rate of the monitoring indicator, determine the target risk level of each monitoring indicator at each monitoring position, and based on the state type of the tunnel roof and the target risk level of each monitoring indicator at each monitoring position, determine the measures to be taken on the tunnel roof. Therefore, after determining the anchor load change trend and the shallow delamination change trend of the roof at each anchor position on the tunnel roof, as well as the anchor load change trend and the deep delamination change trend of the roof at each anchor cable position, the state type of the tunnel roof is determined based on the classification standard of the roof state type, and after determining the risk level of each monitoring indicator at each monitoring position of the tunnel roof, the measures to be taken on the tunnel roof are determined based on the state type of the tunnel roof and the risk level of each monitoring indicator at each monitoring position, thereby improving the efficiency and accuracy of tunnel roof state monitoring.

[0090] Fig.12 A schematic flow chart of a method for monitoring the status of a coal mine tunnel roof provided in an embodiment of the present disclosure.

[0091] like Fig.12 As shown, the method includes: Step 1201, obtaining the monitoring values ​​of multiple monitoring indicators at each monitoring position of the tunnel roof at the current moment, each risk level critical value associated with each monitoring indicator, and historical monitoring data of the monitoring indicators.

[0092] Step 1202: Determine the change trend and change speed of the corresponding monitoring indicator based on the monitoring value of each monitoring indicator at each monitoring location and the historical monitoring data.

[0093] Step 1203, determining the state type of the tunnel roof based on the change trend of each monitoring indicator at each monitoring position.

[0094] Among them, the specific implementation forms of steps 1201 to 1203 can refer to the detailed descriptions in other embodiments of the present disclosure, and will not be repeated here.

[0095] Step 1204, based on the monitoring value critical value and the change rate critical value in each risk level critical value associated with each monitoring indicator, as well as the monitoring value and change rate of each monitoring indicator at the current moment, respectively determine the first risk level of the monitoring value of each monitoring indicator at each monitoring location, and the second risk level of the change rate.

[0096] In the present disclosure, after determining the change speed of each monitoring indicator at each monitoring location, the first risk level of each monitoring indicator at each monitoring location can be determined based on the monitoring value critical value in each risk level critical value associated with each monitoring indicator, and the monitoring value of each monitoring indicator at the current moment, and then the second risk level of each monitoring indicator at each monitoring location can be determined based on the change speed critical value in each risk level critical value associated with each monitoring indicator, and the change speed of each monitoring indicator.

[0097] In some possible implementation forms, when the monitoring value of any monitoring indicator at any monitoring location is less than the corresponding first monitoring value critical value, the first risk level of any monitoring indicator at any monitoring location is determined to be the safety level.

[0098] Among them, the first monitoring value critical value can be a monitoring value critical value used to determine whether the risk level of the monitoring value of the monitoring indicator is a safety level, which can be determined according to actual needs, and the present disclosure does not limit this.

[0099] In some possible implementation forms, when the monitoring value of any monitoring indicator at any monitoring location is greater than or equal to the corresponding first monitoring value critical value and less than the corresponding second monitoring value critical value, the first risk level of any monitoring indicator at any monitoring location is determined to be a dangerous level.

[0100] Among them, the second monitoring value critical value can be the monitoring value critical value between the corresponding danger level and the high danger level in the monitoring value risk level of the monitoring indicator, which can be used to determine whether the risk level of the monitoring value of the monitoring indicator is a danger level or a high danger level. It can be determined according to actual needs, and the present disclosure does not limit this.

[0101] In some possible implementation forms, when the monitoring value of any monitoring indicator at any monitoring location is greater than or equal to the corresponding second monitoring value critical value, the first risk level of any monitoring indicator at any monitoring location is determined to be a high risk level.

[0102] In some possible implementation forms, when the change speed of any monitoring indicator at any monitoring location is less than the corresponding first change speed critical value, the second risk level of any monitoring indicator at any monitoring location is determined to be a safety level.

[0103] Among them, the first change speed critical value can be a monitoring value critical value used to determine whether the risk level of the change speed of the monitoring indicator is a safety level. It can be determined according to actual needs, and the present disclosure does not limit this.

[0104] In some possible implementation forms, when the change speed of any monitoring indicator at any monitoring location is greater than or equal to the corresponding first change speed critical value and less than the corresponding second change speed critical value, the second risk level of any monitoring indicator at any monitoring location is determined to be a dangerous level.

[0105] Among them, the second change rate critical value can be the change rate critical value between the corresponding danger level and the high danger level in the risk level of the change speed of the monitoring indicator, which can be used to determine whether the risk level of the change speed of the monitoring indicator is a danger level or a high danger level. It can be determined according to actual needs, and the present disclosure does not limit this.

[0106] In some possible implementation forms, when the change speed of any monitoring indicator at any monitoring location is greater than or equal to the corresponding second change speed critical value, the second risk level of any monitoring indicator at any monitoring location is determined to be a high risk level.

[0107] Step 1205: Determine the risk level with a higher risk degree between the first risk level and the second risk level of each monitoring indicator as the target risk level of the corresponding monitoring indicator.

[0108] It should be noted that the risk levels are from high to low: high risk level, dangerous level, and safe level.

[0109] In the present disclosure, after determining the first risk level and the second risk level of each monitoring indicator, in order to effectively avoid the occurrence of roof collapse accidents of the tunnel roof and improve the timeliness and reliability of the tunnel roof status monitoring, the risk level with a higher risk degree between the first risk level and the second risk level of each monitoring indicator can be determined as the target risk level of the corresponding monitoring indicator. For example, when the first risk level of a monitoring indicator is a safety level and the second risk level is a danger level, the target risk level of the monitoring indicator is the danger level; when the first risk level of a monitoring indicator is a safety level and the second risk level is also a safety level, the target risk level of the monitoring indicator is the danger level; when the first risk level of a monitoring indicator is a danger level and the second risk level is a high danger level, the target risk level of the monitoring indicator is a high danger level, and the present disclosure does not limit this.

[0110] Step 1206, based on the state type of the tunnel roof and the target risk level of each monitoring indicator at each monitoring location, determine the measures to be taken on the tunnel roof.

[0111] The specific implementation form of step 1206 can refer to the detailed description in other embodiments of the present disclosure, and will not be described in detail here.

[0112] In the disclosed embodiment, first, the monitoring values ​​of multiple monitoring indicators at each monitoring position of the tunnel roof at the current moment, each risk level critical value associated with each monitoring indicator, and the historical monitoring data of the monitoring indicators are obtained, and then based on the monitoring value of each monitoring indicator at each monitoring position and the historical monitoring data, the change trend and change speed of the corresponding monitoring indicator are determined, and based on the change trend of each monitoring indicator at each monitoring position, the state type of the tunnel roof is determined, and then based on the monitoring value critical value and change speed critical value in each risk level critical value associated with each monitoring indicator, and the monitoring value and change speed of each monitoring indicator at the current moment, the first risk level of the monitoring value of each monitoring indicator at each monitoring position and the second risk level of the change speed are determined respectively, and the risk level with a higher risk degree among the first risk level and the second risk level of each monitoring indicator is determined as the target risk level of the corresponding monitoring indicator, and finally based on the state type of the tunnel roof and the target risk level of each monitoring indicator at each monitoring position, the measures to be taken on the tunnel roof are determined. Therefore, by determining the changing trend of each monitoring indicator at each monitoring position in the tunnel roof, and determining the state type of the tunnel roof based on the changing trend of each monitoring indicator, based on each risk level critical value of the monitoring indicator, and the monitoring value and changing speed of the monitoring indicator, the risk level of the monitoring value of the monitoring indicator and the risk level of the changing speed are determined respectively, and the risk level with a higher risk degree is determined as the risk level of the monitoring indicator. Finally, based on the changing trend and risk level of the monitoring indicators, the measures to be taken on the tunnel roof are determined, thereby effectively reducing the probability of tunnel roof collapse accidents and improving the timeliness and reliability of tunnel roof status monitoring.

[0113] Fig.13 A schematic flow chart of a method for monitoring the status of a coal mine tunnel roof provided in an embodiment of the present disclosure.

[0114] like Fig.13 As shown, the method includes: Step 1301, obtaining the monitoring values ​​of multiple monitoring indicators at each monitoring position of the tunnel roof at the current moment, each risk level critical value associated with each monitoring indicator, and historical monitoring data of the monitoring indicators.

[0115] Step 1302: Determine the change trend and change speed of the corresponding monitoring indicator based on the monitoring value of each monitoring indicator at each monitoring location and the historical monitoring data.

[0116] Step 1303, determining the state type of the tunnel roof based on the change trend of each monitoring indicator at each monitoring position.

[0117] Step 1304, determining the target risk level of each monitoring indicator at each monitoring location based on each risk level critical value associated with each monitoring indicator, and the monitoring value and change rate of the monitoring indicator.

[0118] Among them, the risk level critical value includes the monitoring value critical value and the change rate critical value of the associated monitoring indicator.

[0119] Among them, the specific implementation forms of steps 1301 to 1304 can refer to the detailed descriptions in other embodiments of the present disclosure, and will not be repeated here.

[0120] Step 1305 , obtaining at least one first candidate measure associated with the state type of the tunnel roof, and at least one second candidate measure associated with the target risk level of each monitoring indicator.

[0121] Among them, the first candidate measure may be a pre-set measure for supporting and reinforcing the tunnel roof. For different roof state types, the associated first candidate measures may be different, or may be the same, and the present disclosure does not limit this.

[0122] In some possible implementation forms, when the roof state type is shallow delamination damage type, the associated first candidate measures may include measures such as anchor reinforcement or anchor injection, shallow grouting reinforcement, etc., to improve the integrity of the shallow surrounding rock and the dynamic balance of support-surrounding rock, so as to maintain overall stability. When the roof state type is deep delamination damage type, the associated first candidate measures may include measures such as anchor cable reinforcement or anchor injection, deep grouting reinforcement, etc., to improve the integrity of the deep surrounding rock and the dynamic balance of support-surrounding rock, so as to maintain overall stability. When the roof state type is overall delamination damage type, the associated first candidate measures may include comprehensive measures such as anchor cable reinforcement, grouting reinforcement or metal bracket reinforcement to ensure the safety of the roof. When the roof state type is anchor rod, the associated first candidate measures may include measures such as anchor cable reinforcement, grouting reinforcement or metal bracket reinforcement to ensure the safety of the roof. When the damage type is anchor loss, the associated first candidate measures may include shallow grouting, anchor injection, reinforcement and other measures to avoid the continued development of surrounding rock damage. When the roof state type is anchor cable anchor loss damage type, the associated first candidate measures may include deep grouting, anchor cable anchor injection and other measures to avoid continuous delamination of deep surrounding rock or sudden instability accidents. When the roof state type is overall anchor loss damage type, the associated first candidate measures may include grouting, anchor injection and other measures to try to slow down or organize continuous damage to the surrounding rock and avoid instability. When the roof state type is anchor external delamination damage type, the associated first candidate measures may include deep surrounding rock delamination grouting, metal bracket combined support and other measures to avoid large-scale instability. The present disclosure does not limit this.

[0123] Among them, the second candidate measures may be pre-set measures for reinforcing the tunnel roof. For each different monitoring indicator and target risk level, the associated second candidate measures may be different or may be the same, and the present disclosure does not limit this.

[0124] In some possible implementation forms, when the target risk level of the monitoring indicator is a dangerous level, the associated second candidate measures may include increasing anchor rod and cable support, grouting reinforcement and other measures; when the target risk level of the monitoring indicator is a high dangerous level, the associated second candidate measures may include increasing anchor rod and cable support, increasing rigid support structures such as steel frames or steel beams, grouting reinforcement and other measures; the present disclosure does not limit this.

[0125] Step 1306 , determining a measure to be taken on the tunnel roof based on at least one first candidate measure and at least one second candidate measure.

[0126] In the present disclosure, after obtaining at least one first candidate measure associated with the state type of the tunnel roof and at least one second candidate measure associated with the risk level of each monitoring indicator, measures to be taken on the tunnel roof can be determined based on at least one first candidate measure and at least one second candidate measure according to actual needs, thereby achieving timely prevention and control of the tunnel roof, effectively reducing the probability of roof collapse accidents, and improving the reliability of tunnel roof state monitoring. It should be noted that when the state type of the tunnel roof is the anchor loss and damage type, after determining the measures to be taken for the tunnel roof, in order to avoid the continued development of the roof surrounding rock damage, it is necessary to take corresponding measures in time before the deep delamination of the roof begins to increase and the anchor load begins to increase significantly.

[0127] It should be noted that when the state type of the tunnel roof is the anchor cable loss and damage type, after determining the measures to be taken for the tunnel roof, in order to avoid continuous delamination of the deep surrounding rock of the roof or sudden instability accidents, it is necessary to take corresponding measures in time before the anchor cable load decreases and the deep delamination increases significantly.

[0128] In the disclosed embodiment, first, the monitoring values ​​of multiple monitoring indicators of each monitoring position of the tunnel roof at the current moment, each risk level critical value associated with each monitoring indicator, and the historical monitoring data of the monitoring indicators are obtained, and based on the monitoring value of each monitoring indicator at each monitoring position and the historical monitoring data, the change trend and change speed of the corresponding monitoring indicator are determined, and then based on the change trend of each monitoring indicator at each monitoring position, the state type of the tunnel roof is determined, and based on each risk level critical value associated with each monitoring indicator, and the monitoring value and change speed of the monitoring indicator, the target risk level of each monitoring indicator at each monitoring position is determined, and then at least one first candidate measure associated with the state type of the tunnel roof and at least one second candidate measure associated with the target risk level of each monitoring indicator are obtained, and finally, based on the at least one first candidate measure and the at least one second candidate measure, the measures to be taken on the tunnel roof are determined. Therefore, after determining the state type of the tunnel roof and the risk level of each monitoring indicator at each monitoring location, at least one candidate measure associated with the state type of the tunnel roof and at least one candidate measure associated with the risk level of each monitoring indicator are determined as measures to be taken on the tunnel roof, thereby improving the accuracy of tunnel roof state monitoring and effectively reducing the probability of tunnel roof collapse accidents.

[0129] In order to implement the above-mentioned embodiment, the disclosed embodiment also proposes a coal mine tunnel roof status monitoring device.

[0130] Fig.14 A schematic structural diagram of a coal mine tunnel roof status monitoring device provided in an embodiment of the present disclosure.

[0131] like Fig.14 As shown, the coal mine roadway roof status monitoring device 1400 may include: The acquisition module 1401 is used to obtain the monitoring values ​​of multiple monitoring indicators at each monitoring position of the tunnel roof at the current moment, each risk level critical value associated with each monitoring indicator, and historical monitoring data of the monitoring indicator; A first determination module 1402 is used to determine a change trend and a change speed of a corresponding monitoring indicator based on the monitoring value of each monitoring indicator at each monitoring location and historical monitoring data; A second determination module 1403 is used to determine the state type of the tunnel roof based on the change trend of each monitoring indicator at each monitoring position; The third determination module 1404 is used to determine the target risk level of each monitoring indicator of each monitoring location based on each risk level critical value associated with each monitoring indicator, and the monitoring value and change rate of the monitoring indicator, wherein the risk level critical value includes the monitoring value critical value and the change rate critical value of the associated monitoring indicator; The fourth determination module 1405 is used to determine the measures to be taken on the tunnel roof based on the state type of the tunnel roof and the target risk level of each monitoring indicator at each monitoring position.

[0132] Optionally, the second determining module 1403 is specifically configured to: Based on the change trend of the anchor load at each anchor position and the change trend of the shallow delamination of the roof, the state of the shallow surrounding rock of the roof within and outside the action range of each anchor is determined; Based on the change trend of the anchor load at each anchor position and the change trend of the deep delamination of the roof, the state of the deep surrounding rock of the roof within and outside the action range of each anchor is determined; The state type of the tunnel roof is determined based on the state of the shallow surrounding rock of the roof within and outside the action range of each anchor rod, and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable.

[0133] Optionally, the second determining module 1403 is further configured to: Under the condition that the change trend of the anchor load at any anchor position and the change trend of the shallow delamination of the roof remain stable, the state of the shallow surrounding rock of the roof within and outside the action range of any anchor is determined to be stable; When the change trend of the anchor load at any anchor position and the change trend of the shallow delamination of the roof are both increasing, it is determined that the state of the shallow surrounding rock within the action range of any anchor is unstable; When the change trend of the anchor load at the location of any anchor is a decreasing trend and the change trend of the shallow delamination of the roof is an increasing trend, the state of the shallow surrounding rock of the roof within the action range of any anchor is determined as the surrounding rock failure range continues to extend to the anchoring section of any anchor; When the change trend of the anchor load at any anchor position is an increasing trend and the change trend of the shallow delamination of the roof is to remain stable, it is determined that the state of the shallow surrounding rock within the action range of any anchor is a stable state.

[0134] Optionally, the second determining module 1403 is further configured to: Under the condition that the change trend of the anchor load at any anchor position and the change trend of the deep delamination of the roof remain stable, it is determined that the state of the deep surrounding rock of the roof within and outside the action range of any anchor is stable; When the change trend of the anchor load at any anchor position and the change trend of the deep delamination of the roof are both increasing, it is determined that the state of the deep surrounding rock within the action range of any anchor is unstable; When the change trend of the anchor load at the location of any anchor is a decreasing trend and the change trend of the deep delamination of the roof is an increasing trend, the state of the deep surrounding rock of the roof within the action range of any anchor is determined as the surrounding rock failure range continues to extend to the anchoring section of any anchor; When the anchor load change trend at the location of any anchor cable is an increasing trend and the deep delamination change trend of the roof remains stable, it is determined that the deep surrounding rock state within the action range of any anchor cable is a stable state, and the deeper surrounding rock state of the roof outside the action range of any anchor cable has delamination.

[0135] Optionally, the second determining module 1403 is further configured to: Obtaining a preset classification standard for roof status types; Based on the classification standards, the state of the shallow surrounding rock of the roof within and outside the action range of each anchor rod and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable are used to determine the state type of the tunnel roof.

[0136] Optionally, the second determining module 1403 is further configured to: When the state of the shallow surrounding rock of the roof within and outside the action range of each anchor rod and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable are both stable, the roof state type is determined to be the overall stable type; When the state of the shallow surrounding rock of the roof within the action range of any anchor is unstable, and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable is stable, the roof state type is determined to be the shallow delamination failure type; When the state of the shallow surrounding rock of the roof within and outside the action range of each anchor is stable, and the state of the deep surrounding rock of the roof within the action range of any anchor cable is unstable, the roof state type is determined to be the deep delamination failure type; When the state of the shallow surrounding rock of the roof within the action range of any anchor rod and the state of the deep surrounding rock of the roof within the action range of any anchor cable are both unstable, the roof state type is determined to be the overall delamination failure type; When the state of the shallow surrounding rock of the roof within the action range of any anchor is that the surrounding rock damage range continues to extend to the anchoring section of the corresponding anchor, and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable is stable, the roof state type is determined to be the anchor failure type; When the state of the shallow surrounding rock of the roof within and outside the action range of each anchor is stable, and the state of the deep surrounding rock of the roof within the action range of any anchor cable is that the surrounding rock damage range continues to extend to the anchoring section of the corresponding anchor cable, the roof state type is determined to be the anchor cable loss damage type; When the state of the shallow surrounding rock of the roof within the action range of any anchor rod is that the surrounding rock damage range continues to extend to the anchoring section of the corresponding anchor rod, and the state of the deep surrounding rock of the roof within the action range of any anchor cable is that the surrounding rock damage range continues to extend to the anchoring section of the corresponding anchor cable, the roof state type is determined to be the overall anchor loss damage type; When the state of the shallow surrounding rock of the roof within the action range of any anchor rod is stable, the state of the deep surrounding rock of the roof within the action range of any anchor cable is stable, and the state of the deeper surrounding rock of the roof outside the action range of any anchor cable is delamination, the roof state type is determined to be the anchor external delamination damage type.

[0137] Optionally, the third determining module 1404 is specifically configured to: Based on the monitoring value critical value and the change speed critical value in each risk level critical value associated with each monitoring indicator, and the monitoring value and change speed of each monitoring indicator at the current moment, respectively determine the first risk level of the monitoring value of each monitoring indicator at each monitoring location, and the second risk level of the change speed; Of the first risk level and the second risk level of each monitoring indicator, the risk level with a higher risk degree is determined as the target risk level of the corresponding monitoring indicator.

[0138] Optionally, the third determining module 1404 is further configured to: In the case where the monitoring value of any monitoring indicator at any monitoring location is less than the corresponding first monitoring value critical value, determining the first risk level of any monitoring indicator at any monitoring location as a safety level; When the monitoring value of any monitoring indicator at any monitoring location is greater than or equal to the corresponding first monitoring value critical value and less than the corresponding second monitoring value critical value, the first risk level of any monitoring indicator at any monitoring location is determined to be a dangerous level; When the monitoring value of any monitoring indicator at any monitoring location is greater than or equal to the corresponding second monitoring value critical value, determining the first risk level of any monitoring indicator at any monitoring location as a high risk level; When the change speed of any monitoring indicator at any monitoring position is less than the corresponding first change speed critical value, determining the second risk level of any monitoring indicator at any monitoring position as a safety level; When the change rate of any monitoring indicator at any monitoring location is greater than or equal to the corresponding first change rate critical value and less than the corresponding second change rate critical value, the second risk level of any monitoring indicator at any monitoring location is determined to be a dangerous level; When the change speed of any monitoring indicator at any monitoring location is greater than or equal to the corresponding second change speed critical value, the second risk level of any monitoring indicator at any monitoring location is determined to be a high risk level.

[0139] Optionally, the fourth determining module 1405 is specifically configured to: Acquire at least one first candidate measure associated with the state type of the roadway roof, and at least one second candidate measure associated with the target risk level of each monitoring indicator; Based on the at least one first candidate measure and the at least one second candidate measure, a measure to be taken on the tunnel roof is determined.

[0140] The functions and specific implementation principles of the above modules in the embodiments of the present disclosure can be referred to the above method embodiments, and will not be repeated here.

[0141] In the present disclosure, firstly, the monitoring values ​​of multiple monitoring indicators at each monitoring position of the tunnel roof at the current moment, each risk level critical value associated with each monitoring indicator, and the historical monitoring data of the monitoring indicators are obtained, and then based on the monitoring value of each monitoring indicator at each monitoring position and the historical monitoring data, the change trend and change speed of the corresponding monitoring indicator are determined, and based on the change trend of each monitoring indicator at each monitoring position, the state type of the tunnel roof is determined, and then based on each risk level critical value associated with each monitoring indicator, and the monitoring value and change speed of the monitoring indicator, the target risk level of each monitoring indicator at each monitoring position is determined, and finally based on the state type of the tunnel roof and the target risk level of each monitoring indicator at each monitoring position, the measures to be taken on the tunnel roof are determined. Therefore, by determining the changing trend of each monitoring indicator at each monitoring position of the tunnel roof, the state type of the tunnel roof is determined, and the risk level of each monitoring indicator is determined. Based on the changing trend and risk level of each monitoring indicator at each monitoring position, the measures to be taken on the tunnel roof are determined, thereby achieving accurate judgment of the state of the tunnel roof and taking corresponding prevention and control measures in time, effectively reducing the probability of tunnel roof collapse accidents and improving the reliability and timeliness of tunnel roof monitoring.

[0142] Fig.15 A block diagram of an exemplary electronic device suitable for implementing embodiments of the present disclosure is shown.

[0143] Fig.15 The electronic device 12 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0144] like Fig.15As shown, the electronic device 12 is presented in the form of a general-purpose computing device. The components of the electronic device 12 may include, but are not limited to: one or more processors or processing units 16, a memory 28, and a bus 18 connecting different system components (including the memory 28 and the processing unit 16). The bus 18 represents one or more of several types of bus structures, including a memory bus or a memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any bus structure in a variety of bus structures. For example, these architectures include, but are not limited to, an Industry Standard Architecture (hereinafter referred to as: ISA) bus, a Micro Channel Architecture (hereinafter referred to as: MCA) bus, an enhanced ISA bus, a Video Electronics Standards Association (hereinafter referred to as: VESA) local bus, and a Peripheral Component Interconnection (hereinafter referred to as: PCI) bus.

[0145] The electronic device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by the electronic device 12, including volatile and non-volatile media, removable and non-removable media.

[0146] The memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache 32. The electronic device 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, the storage system 34 may be used to read and write non-removable, non-volatile magnetic media ( Fig.15 Not shown, usually called a "hard drive").

[0147] although Fig.15Not shown in the figure, a disk drive for reading and writing a removable non-volatile disk (such as a "floppy disk"), and an optical disk drive for reading and writing a removable non-volatile optical disk (such as a compact disc read only memory (hereinafter referred to as: CD-ROM), a digital versatile disc read only memory (hereinafter referred to as: DVD-ROM) or other optical media) can be provided. In these cases, each drive can be connected to the bus 18 through one or more data medium interfaces. The memory 28 may include at least one program product, which has a set (for example, at least one) of program modules, which are configured to perform the functions of the various embodiments of the present disclosure.

[0148] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in the memory 28, such program modules 42 including but not limited to an operating system, one or more application programs, other program modules, and program data, each of which or some combination thereof may include an implementation of a network environment. The program modules 42 generally perform the functions and / or methods of the embodiments described in the present disclosure.

[0149] The electronic device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), and may also communicate with one or more devices that enable the human body to interact with the electronic device 12, and / or communicate with any device that enables the electronic device 12 to communicate with one or more other computing devices (e.g., network card, modem, etc.). Such communication may be performed through an input / output (I / O) interface 22. In addition, the electronic device 12 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through a network adapter 20. As shown, the network adapter 20 communicates with other modules of the electronic device 12 through a bus 18. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0150] The processing unit 16 executes various functional applications and parameter information determinations by running the programs stored in the memory 28, such as implementing the coal mine roadway roof status monitoring method mentioned in the above-mentioned embodiment.

[0151] In order to implement the above embodiments, the present disclosure also proposes a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to enable a computer to execute the coal mine tunnel roof status monitoring method proposed in the aforementioned embodiments of the present disclosure.

[0152] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0153] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

[0154] It should be noted that, in the description of the present disclosure, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, the meaning of "plurality" is two or more.

[0155] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present disclosure includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0156] It should be understood that the various parts of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof may be used to implement: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0157] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0158] In addition, each functional unit in each embodiment of the present disclosure may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0159] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0160] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0161] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A method for monitoring the status of a coal mine roadway roof, comprising: Obtaining monitoring values ​​of multiple monitoring indicators at each monitoring position of the tunnel roof at the current moment, each risk level critical value associated with each of the monitoring indicators, and historical monitoring data of the monitoring indicators; Based on the monitoring value of each monitoring indicator at each monitoring location and the historical monitoring data, determining the change trend and change speed of the corresponding monitoring indicator; Determining the state type of the tunnel roof based on the change trend of each of the monitoring indicators at each of the monitoring positions; Determine the target risk level of each monitoring indicator at each monitoring location based on each risk level critical value associated with each monitoring indicator, and the monitoring value and change rate of the monitoring indicator, wherein the risk level critical value includes the monitoring value critical value and change rate critical value of the associated monitoring indicator; Based on the state type of the tunnel roof and the target risk level of each of the monitoring indicators at each of the monitoring locations, measures to be taken on the tunnel roof are determined.

2. The method of claim 1, wherein: The monitoring positions include the positions of the anchor rods and the anchor cables, the monitoring indicators include the anchor rod load, the anchor cable load, the shallow separation of the roof, and the deep separation of the roof, and the state type of the roadway roof is determined based on the change trend of each of the monitoring indicators at each of the monitoring positions, including: Based on the change trend of the anchor load at each anchor position and the change trend of the shallow delamination of the roof, the state of the shallow surrounding rock of the roof within and outside the action range of each anchor is determined; Based on the change trend of the anchor load at each anchor position and the change trend of the deep delamination of the roof, the state of the deep surrounding rock of the roof within and outside the action range of each anchor is determined; The state type of the tunnel roof is determined based on the state of the shallow surrounding rock of the roof within and outside the action range of each anchor rod and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable.

3. The method of claim 2, wherein: The determining of the state of the shallow surrounding rock of the roof within and outside the action range of each anchor based on the change trend of the anchor load at the location of each anchor and the change trend of the shallow delamination of the roof, includes at least one of the following: When the change trend of the anchor load at any anchor position and the change trend of the shallow delamination of the roof remain stable, it is determined that the state of the shallow surrounding rock of the roof within and outside the action range of any anchor is a stable state; When the change trend of the anchor load at any anchor position and the change trend of the shallow delamination of the roof are both increasing, it is determined that the state of the shallow surrounding rock within the action range of any anchor is unstable; When the change trend of the anchor load at the location of any anchor is a decreasing trend and the change trend of the shallow delamination of the roof is an increasing trend, it is determined that the state of the shallow surrounding rock of the roof within the action range of any anchor is that the surrounding rock damage range continues to extend to the anchoring section of any anchor; When the change trend of the anchor load at the position of any anchor is an increasing trend and the change trend of the shallow delamination of the roof is to remain stable, it is determined that the state of the shallow surrounding rock within the action range of any anchor is a stable state.

4. The method of claim 2, wherein: The method of determining the state of the surrounding rock in the deep part of the roof within and outside the action range of each anchor cable based on the change trend of the anchor cable load at the location of each anchor cable and the change trend of the deep delamination of the roof cable comprises at least one of the following: When the change trend of the anchor load at the location of any anchor and the change trend of the deep delamination of the roof remain stable, it is determined that the state of the deep surrounding rock of the roof within and outside the action range of any anchor is a stable state; When the change trend of the anchor load at the location of any anchor and the change trend of the deep delamination of the roof are both increasing, it is determined that the state of the deep surrounding rock within the action range of any anchor is unstable; When the change trend of the anchor load at the location of any anchor is a decreasing trend and the change trend of the deep delamination of the roof is an increasing trend, it is determined that the state of the deep surrounding rock of the roof within the action range of any anchor is that the surrounding rock damage range continues to extend to the anchoring section of any anchor; When the anchor load change trend at the location of any anchor cable is an increasing trend and the deep delamination change trend of the roof is stable, it is determined that the deep surrounding rock state within the action range of any anchor cable is a stable state, and the deeper surrounding rock of the roof outside the action range of any anchor cable has delamination.

5. The method according to any one of claims 2 to 4, wherein: The determining of the state type of the roadway roof based on the state of the shallow surrounding rock of the roof within and outside the action range of each anchor rod and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable includes: Obtaining a preset classification standard for roof status types; Based on the classification standard, the state of the shallow surrounding rock of the roof within and outside the action range of each anchor rod and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable, the state type of the tunnel roof is determined.

6. The method of claim 5, wherein: The preset classification standard of the roof status type includes at least one of the following: In the case that the state of the shallow surrounding rock of the roof within and outside the action range of each anchor rod and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable are both stable, determining the roof state type as an overall stable type; When the state of the shallow surrounding rock of the roof within the action range of any of the anchor rods is unstable, and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable is stable, the roof state type is determined to be a shallow delamination failure type; When the state of the shallow surrounding rock of the roof within and outside the action range of each anchor rod is stable, and the state of the deep surrounding rock of the roof within the action range of any anchor cable is unstable, the roof state type is determined to be a deep delamination failure type; When the state of the shallow surrounding rock of the roof within the action range of any of the anchor rods and the state of the deep surrounding rock of the roof within the action range of any of the anchor cables are both unstable, determining the roof state type as the overall delamination failure type; When the state of the shallow surrounding rock of the roof within the action range of any of the anchor rods is that the surrounding rock damage range continues to extend to the anchoring section of the corresponding anchor rod, and the state of the deep surrounding rock of the roof within and outside the action range of each anchor cable is a stable state, the roof state type is determined to be the anchor rod anchor loss damage type; When the state of the shallow surrounding rock of the roof within and outside the action range of each anchor rod is stable, and the state of the deep surrounding rock of the roof within the action range of any anchor cable is that the surrounding rock damage range continues to extend to the anchoring section of the corresponding anchor cable, the roof state type is determined to be the anchor cable anchor loss damage type; When the state of the shallow surrounding rock of the roof within the action range of any of the anchor rods is that the surrounding rock damage range continues to extend to the anchoring section of the corresponding anchor rod, and the state of the deep surrounding rock of the roof within the action range of any of the anchor cables is that the surrounding rock damage range continues to extend to the anchoring section of the corresponding anchor cable, the roof state type is determined to be the overall anchor loss damage type; When the state of the shallow surrounding rock of the roof within the action range of any of the anchor rods is stable, and the state of the deep surrounding rock of the roof within the action range of any of the anchor cables is stable, and delamination occurs in the deeper surrounding rock of the roof outside the action range of any of the anchor cables, the roof state type is determined to be the anchored external delamination damage type.

7. The method of claim 1, wherein: Determining the target risk level of each monitoring indicator at each monitoring location based on each risk level critical value associated with each monitoring indicator, and the monitoring value and change rate of the monitoring indicator, includes: Based on the monitoring value critical value and the change speed critical value in each risk level critical value associated with each of the monitoring indicators, and the monitoring value and change speed of each of the monitoring indicators at the current moment, respectively determine the first risk level of the monitoring value of each of the monitoring indicators at each of the monitoring locations, and the second risk level of the change speed; Of the first risk level and the second risk level of each monitoring indicator, the risk level with a higher risk degree is determined as the target risk level of the corresponding monitoring indicator.

8. The method of claim 7, wherein: The determining of the first risk level of the monitoring value of each monitoring indicator at each monitoring location and the second risk level of the change speed based on the monitoring value critical value and the change speed critical value in each risk level critical value associated with each monitoring indicator, and the monitoring value and change speed of each monitoring indicator at the current moment, respectively, includes at least one of the following: In the case where the monitoring value of any monitoring indicator at any monitoring location is less than the corresponding first monitoring value critical value, determining the first risk level of any monitoring indicator at any monitoring location as a safety level; When the monitoring value of any monitoring indicator at any monitoring location is greater than or equal to the corresponding first monitoring value critical value and less than the corresponding second monitoring value critical value, the first risk level of any monitoring indicator at any monitoring location is determined to be a dangerous level; When the monitoring value of any monitoring indicator at any monitoring location is greater than or equal to the corresponding second monitoring value critical value, determining that the first risk level of any monitoring indicator at any monitoring location is a high risk level; When the change speed of any monitoring indicator at any monitoring position is less than the corresponding first change speed critical value, determining the second risk level of any monitoring indicator at any monitoring position as a safety level; When the change speed of any monitoring indicator at any monitoring position is greater than or equal to the corresponding first change speed critical value and less than the corresponding second change speed critical value, the second risk level of any monitoring indicator at any monitoring position is determined to be a dangerous level; When the change speed of any monitoring indicator at any monitoring location is greater than or equal to the corresponding second change speed critical value, it is determined that the second risk level of any monitoring indicator at any monitoring location is a high risk level.

9. The method of claim 1, wherein: Determining measures to be taken on the tunnel roof based on the state type of the tunnel roof and the target risk level of each monitoring indicator at each monitoring position includes: Acquire at least one first candidate measure associated with the state type of the tunnel roof, and at least one second candidate measure associated with the target risk level of each of the monitoring indicators; Based on the at least one first candidate measure and the at least one second candidate measure, a measure to be taken on the tunnel roof is determined.

10. A coal mine roadway roof status monitoring device, comprising: An acquisition module, used to acquire the monitoring values ​​of multiple monitoring indicators at each monitoring position of the tunnel roof at the current moment, each risk level critical value associated with each of the monitoring indicators, and historical monitoring data of the monitoring indicators; A first determination module, configured to determine a change trend and a change speed of a corresponding monitoring indicator based on a monitoring value of each monitoring indicator at each monitoring location and historical monitoring data; A second determination module is used to determine the state type of the tunnel roof based on the change trend of each of the monitoring indicators at each of the monitoring positions; A third determination module is used to determine the target risk level of each monitoring indicator of each monitoring location based on each risk level critical value associated with each monitoring indicator, and the monitoring value and change rate of the monitoring indicator, wherein the risk level critical value includes the monitoring value critical value and the change rate critical value of the associated monitoring indicator; The fourth determination module is used to determine the measures to be taken on the tunnel roof based on the state type of the tunnel roof and the target risk level of each monitoring indicator at each monitoring position.

11. An electronic device, characterized in that: include: at least one processor; and, a memory communicatively coupled to the at least one processor; The memory stores instructions executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the method according to any one of claims 1 to 9.

12. A non-transitory computer-readable storage medium storing computer instructions, wherein: The computer instructions are used to cause the computer to execute the method according to any one of claims 1-9.

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