Anchor rod stress monitoring system and anchor rod stress monitoring method

Abstract

The invention provides an anchor rod stress monitoring system and an anchor rod stress monitoring method. The system comprises a stress sensor, a transmission bus, a sensor acquisition substation, a looped network switch and a server. The stress sensor is used for collecting the stress change value of the anchor rod at a preset time interval; the transmission bus is used for sending the stress change value acquired by the stress sensor to the sensor acquisition substation corresponding to the working surface to which the stress sensor belongs; the sensor acquisition substation is used for associating the received stress change value with the position information of the stress sensor corresponding to the stress change value; the looped network switch is used for sending the stress change value in the substation collected by any sensor and the associated position information to the server; and the server is used for generating early warning information according to the stress change value and the associated position information. Therefore, more efficient and accurate working face stress monitoring can be achieved, timely early warning is conducted on the supporting safety problem, and the safety of underground work can be improved.

Description

Technical Field

[0001] The present application relates to the technical fields of mine rock burst monitoring and early warning, and in particular to an anchor stress monitoring system and an anchor stress monitoring method. Background Art

[0002] Rock burst refers to the sudden stress release phenomenon encountered in underground rocks or soil during the construction of tunnels, mines and other projects. This stress release will cause an instantaneous increase in ground pressure, posing a safety hazard to the construction. Therefore, measuring coal rock stress through anchor stress is an important means of monitoring rock burst. Rock burst anchor stress monitoring is also an important link in underground mining fields such as coal mines. It is of great significance for preventing rock burst disasters and ensuring mine safety. The main purpose of rock burst anchor stress monitoring is to determine the changes in coal rock stress, and then guide the layout of the working face and the support of the tunnel. By monitoring the changes in anchor stress, potential rock burst danger areas can be discovered in a timely manner, providing basic data for later anti-burst evaluation and rock burst control work. Summary of the invention

[0003] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, the first purpose of this application is to propose an anchor stress monitoring system to realize real-time monitoring of stress changes in the anchor within the working face, to predict dangerous areas in the working face and to provide timely early warnings, thereby improving the accuracy and reliability of stress monitoring and thereby improving the safety of tunnel work.

[0005] The second objective of the present application is to provide a method for monitoring anchor stress.

[0006] The third objective of the present application is to provide an electronic device.

[0007] A fourth objective of the present application is to provide a computer-readable storage medium.

[0008] A fifth object of the present application is to provide a computer program product.

[0009] To achieve the above-mentioned purpose, the first embodiment of the present application proposes an anchor stress monitoring system, comprising:

[0010] A stress sensor, a transmission bus, a sensor acquisition substation, a ring network switch and a server, wherein the stress sensor is connected to the sensor acquisition substation via the transmission bus, and the sensor acquisition substation and the server are respectively connected to the ring network switch;

[0011] The stress sensor is used to collect stress change values ​​of the anchor rod at preset time intervals;

[0012] The transmission bus is used to send the stress change value collected by the stress sensor to the sensor collection substation corresponding to the working surface to which the stress sensor belongs;

[0013] The sensor acquisition substation is used to associate the received stress change value with the position information of the stress sensor corresponding to the stress change value, wherein each sensor acquisition substation corresponds to a working surface and receives the stress change values ​​collected by all stress sensors in the working surface;

[0014] The ring network switch is used to send the stress change value and associated location information in any sensor acquisition substation to the server;

[0015] The server is used to generate warning information according to the stress change value and the associated position information.

[0016] To achieve the above-mentioned purpose, a second embodiment of the present application proposes a method for monitoring anchor stress, comprising:

[0017] Acquire stress change values ​​respectively collected by a first number of stress sensors in the target working surface, and position information corresponding to each of the stress sensors;

[0018] Determining the stress change gradient value between the anchor rods in the target working surface according to the stress change value and the position information;

[0019] When the stress change gradient value is greater than the gradient threshold, a warning message is generated based on the position information of the anchor rod corresponding to the stress change gradient value.

[0020] To achieve the above-mentioned purpose, the third aspect of the present application provides an electronic device, including: a processor, and a memory communicatively connected to the processor;

[0021] The memory stores computer-executable instructions;

[0022] The processor executes the computer-executable instructions stored in the memory to implement the anchor stress monitoring method proposed in the second aspect of the present application.

[0023] To achieve the above-mentioned purpose, the fourth aspect embodiment of the present application proposes a computer-readable storage medium, in which computer execution instructions are stored. When the computer execution instructions are executed by a processor, they are used to implement the anchor stress monitoring method proposed in the first aspect embodiment of the present application.

[0024] To achieve the above-mentioned purpose, the fifth embodiment of the present application proposes a computer program product, a computer program, which, when executed by a processor, implements the anchor stress monitoring method proposed in the first embodiment of the present application.

[0025] The anchor stress monitoring system and anchor stress monitoring method provided by the present application use stress sensors to collect stress change values ​​on anchors at different positions in the working surface, and then upload them to the server through the transmission bus, sensor acquisition substation and ring network switch. The server analyzes the stress change values ​​of the anchors in the working surface, predicts the positions where potential safety hazards may exist in the working surface, and generates early warning information. In this way, the stress change of the anchors in the working surface can be monitored in real time to predict dangerous areas in the working surface and issue early warnings in time, thereby improving the accuracy and reliability of stress monitoring and thus improving the safety of tunnel work.

[0026] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0028] Figure 1 A structural schematic diagram of an anchor stress monitoring system provided in an embodiment of the present application;

[0029] Figure 2 A schematic diagram of a stress sensor structure and installation provided in an embodiment of the present application;

[0030] Figure 3 A schematic diagram of a flow chart of an anchor stress monitoring method provided in an embodiment of the present application;

[0031] Among them, 11 is a stress sensor, 12 is a transmission bus, 13 is a sensor acquisition substation, 14 is a ring network switch, 15 is a server, 111 is a signal transmission module, 112 is a data processing main circuit module, 113 is a high-frequency transducer, 21 is an anchor fastening bolt, 22 is an anchor, and 23 is an anchor fastening bolt gasket. DETAILED DESCRIPTION

[0032] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0033] The anchor stress monitoring system and the anchor stress monitoring method of the embodiments of the present application are described below with reference to the accompanying drawings.

[0034] Figure 1 A structural schematic diagram of an anchor stress monitoring system provided in an embodiment of the present application.

[0035] like Figure 1 As shown, the anchor stress monitoring system comprises:

[0036] Stress sensor 11, transmission bus 12, sensor acquisition substation 13, ring network switch 14 and server 15, wherein the stress sensor 11 is connected to the sensor acquisition substation 13 via the transmission bus 12, and the sensor acquisition substation 13 and the server 15 are respectively connected to the ring network switch 15.

[0037] In some embodiments, the stress sensor 11 is used to collect stress change values ​​of the anchor rod at preset time intervals.

[0038] The preset time interval is a collection frequency determined according to needs, for example, collection may be performed once every 1 minute.

[0039] In the embodiment of the present application, the stress sensor can be installed at the top of the tunnel support anchor rod, which is an anchor rod already installed in the tunnel. Therefore, the anchor rod stress monitoring system of the present application does not need to install an additional anchor rod, and is more convenient to use. Each stress sensor can monitor the stress change value in the anchor rod installed in real time.

[0040] It should be noted that Figure 1 As shown, the anchor stress monitoring system provided by the present application can monitor stress on multiple working faces at the same time, and stress sensors are arranged in layers on the vertical walls of the tunnels in each working face, and multiple stress sensors can be arranged at certain intervals on each layer to comprehensively monitor the stress at different positions in the working face. In the embodiment of the present application, in order to improve the rationality and reliability of the installation position and number of stress sensors, the number of layers of stress sensors and the distance between adjacent stress sensors can be adjusted according to the height, total length and distance from the starting point of coal mining of the working face.

[0041] It should be noted that in the embodiment of the present application, the stress sensor 11 can send ultrasonic waves into the anchor rod, use the tapped delay line method to measure the current length of the anchor rod and compare the difference with the result of the last measurement, obtain the displacement change value, and then combine the relationship between the displacement change and the anchor rod force change determined according to the experiment to obtain the stress change value of the anchor rod at this time. Therefore, each stress sensor 11 in the anchor rod stress monitoring system can be composed of a signal transmission module, a data processing main circuit module, and a high-frequency transducer. Specifically, the data processing main circuit module excites a high-frequency signal (such as ultrasonic waves) into the anchor rod body through a high-frequency transducer, and returns a high-frequency signal to another section of the anchor rod. The stress change value of the anchor rod body is measured after calculation by the data processing main circuit module.

[0042] In some embodiments, the transmission bus 12 is used to send the stress change value collected by the stress sensor to the sensor collection substation 13 corresponding to the working surface to which the stress sensor 11 belongs.

[0043] It should be noted that the transmission bus 12 may be a controller area network (CAN) bus.

[0044] In the present application embodiment, Figure 1 It can be seen that the transmission bus 12 connects a sensor acquisition substation 13 with all the stress sensors 11 installed in its corresponding monitoring working surface. Then, at a certain moment, after all the stress sensors in the same working surface collect the stress change values ​​in the corresponding anchor rods, they can be sent to the sensor acquisition substation 13 through the transmission bus 12 at the same time.

[0045] In some embodiments, the sensor acquisition substation 13 is used to associate the received stress change value with the position information of the stress sensor corresponding to the stress change value.

[0046] In the anchor stress monitoring system proposed in the present application, each sensor acquisition substation corresponds to a working surface and receives stress change values ​​collected by all stress sensors in the working surface. Since the number of stress sensors connected to the sensor acquisition substation 13 is relatively large, in order to facilitate the determination of stress conditions at different positions and accurately locate the fault position that requires maintenance and prevention, the position information of each stress sensor can be obtained while receiving the stress change value collected by each stress sensor, and the stress change value can be associated with the corresponding position information, thereby determining the overall stress monitoring situation in the working surface.

[0047] It should be noted that the sensor acquisition substation 13 supports multiple bus interfaces, each interface supports more than 64 connected sensors, and each sensor acquisition substation can include a 32-bit single-chip microcomputer module, a CAN bus connection module, and an RS232 / 485 bus connection module. The anchor stress monitoring system proposed in this application can support more than 16 sensor acquisition substations, and the sensor acquisition substation supports Ethernet cable and optical fiber transmission, so that the anchor stress monitoring system proposed in this application has stronger applicability and promotion value.

[0048] It should be noted that in some possible embodiments, there may be a server failure or disconnection, and the sensor acquisition substation may not be able to upload the received data to the server in real time. In order to maintain data continuity, the sensor acquisition substation may also include a data storage module and a clock module to temporarily save the sensor data.

[0049] Optionally, the data storage module is used to store the received stress change values ​​when the line between the sensor acquisition substation and the server is disconnected. Therefore, after the line between the sensor acquisition substation and the server is connected, all stress change values ​​during the disconnection period can be obtained from the data storage module and uploaded to the server.

[0050] The clock module is used to associate the stress change value stored in the data storage module with the acquisition time corresponding to the stress change value. Thus, the clock module can record the starting time when the sensor acquisition substation fails to upload the sensor data to the server, and the time of each receipt of sensor data after the starting time, to ensure the time continuity of the data re-received by the server after disconnection, and improve the reliability of stress monitoring.

[0051] In some embodiments, the ring network switch 14 is used to send the stress change value and the associated location information in any sensor acquisition substation to the server.

[0052] In the embodiment of the present application, the ring network switch 14 adopts a ring topology structure, and each switch can be connected to the other two switches through two ports to form a closed loop, and the transmitted data can enter from one port and then exit from another port to achieve the stress change value and the associated location information in any sensor acquisition substation and send it to the server. In other words, after the sensor acquisition substation collects the stress change values ​​of the stress sensors to which it belongs, it can enter the ring network through the ring network switch and be received by the server.

[0053] In some embodiments, the server 15 is used to generate warning information based on the stress change value and the associated position information.

[0054] In the disclosed embodiment, the server 12 is located on the ground and may be a personal computer (PC), etc. It is capable of analyzing the stress change values ​​and associated position information collected underground to predict which positions in the working face may have poor anchor support effects or potential safety hazards, etc., and generate early warning information for the position to prompt the operation and maintenance personnel to perform maintenance in a timely manner to avoid disasters.

[0055] Optionally, the server 12 may determine the stress change gradient value between the anchor rods in the working surface corresponding to the sensor acquisition substation based on the stress change value and the associated position information.

[0056] In the embodiment of the present application, the difference between the stress change values ​​corresponding to adjacent anchor rods can be calculated based on the stress change value and the associated position information to obtain the stress change gradient value.

[0057] Then, when the stress change gradient value is greater than the gradient threshold, warning information may be generated based on the position information of the anchor rod corresponding to the stress change gradient value.

[0058] The gradient threshold may be a minimum gradient value for coal rock deformation or fracture determined experimentally, for example, the gradient threshold may be 5 or the like.

[0059] In the embodiment of the present application, when the stress change gradient value is greater than the gradient threshold, the coal rock is prone to deformation or cracking, causing safety hazards. Therefore, it can be determined that the anchor rod position corresponding to the stress change gradient value is a potential rock burst danger zone. It is necessary to determine the position information of the anchor rod corresponding to the stress change gradient value and generate early warning information to prompt the operation and maintenance personnel to carry out maintenance and rock burst control work at this location.

[0060] Optionally, the server 12 may also generate a stress cloud map corresponding to the working surface according to the stress change value and the associated position information, and display the stress cloud map.

[0061] It should be noted that in the stress cloud map, different colors can be used to represent the stress change values ​​at different positions. For example, the greater the stress change value, the darker the color of the associated position in the stress cloud map. The distribution of stress changes in the working surface can be intuitively determined through the stress cloud map, so that the operation and maintenance personnel can quickly locate the position of the working surface that may have safety hazards through the stress cloud map.

[0062] The anchor stress monitoring system provided in the embodiment of the present application uses stress sensors to collect stress change values ​​on anchors at different positions in the working surface, and then uploads them to the server through the transmission bus, sensor acquisition substation and ring network switch. The server analyzes the stress change values ​​of the anchors in the working surface, predicts the positions where potential safety hazards may exist in the working surface, and generates warning information. In this way, the stress change of the anchors in the working surface can be monitored in real time to predict dangerous areas in the working surface and issue warnings in time, thereby improving the accuracy and reliability of stress monitoring and thus improving the safety of tunnel work.

[0063] Figure 2 Schematic diagram of a stress sensor structure and installation provided in an embodiment of the present application. Figure 2 As shown, based on the above embodiments, in the anchor stress monitoring system proposed in this application, the stress sensor 11 may include:

[0064] Signal transmission module 111, data processing main circuit module 112 and high-frequency transducer 113, wherein the high-frequency transducer 113 is connected to the data processing main circuit module 112, the data processing main circuit module 112 is connected to the signal transmission module 113, and the signal transmission module is connected to the transmission bus 12.

[0065] In some embodiments, the data processing main circuit module 112 is used to generate a first signal at a preset time interval and send the first signal to the high-frequency transducer.

[0066] The first signal may be an initial pulse signal for driving the transducer to work, and may drive the high-frequency transducer 113 to send a second signal to the anchor rod. The second signal is a high-frequency signal, such as ultrasonic wave.

[0067] In the embodiment of the present application, the data processing main circuit module 112 can send a first signal to the high-frequency transducer 113 once at a preset time interval to trigger the acquisition of the stress change value in the anchor rod at that time.

[0068] The data processing main circuit module 112 may also receive a third signal returned by the anchor rod, and then determine a displacement change value of the anchor rod based on the second signal and the third signal.

[0069] The third signal is a high-frequency signal returned via the anchor rod.

[0070] In the embodiment of the present application, through the second signal and the third signal, the data processing main circuit module 112 can measure the propagation and reflection time in the anchor rod, so as to obtain the current length of the anchor rod, and then calculate the difference with the last measured length to determine the displacement change value of the anchor rod at this time.

[0071] Afterwards, the data processing main circuit module 112 can determine the stress change value of the anchor rod based on the displacement change value and the reference relationship between the displacement and the stress.

[0072] It should be noted that in the embodiment of the present application, the reference relationship between displacement and stress can be established by experimentally measuring the strain value of the anchor rod length under different stress conditions. The displacement is the strain in the length, and the stress is the force per unit area in the anchor rod.

[0073] That is to say, after determining the displacement change value of the anchor rod at this time, the stress change value of the anchor rod can be directly calculated based on the reference relationship between the displacement and the stress measured in advance.

[0074] It should be noted that the data processing main circuit module 112 may include an ultrasonic transducer driving circuit, a signal amplifying circuit, a filtering circuit, a time difference measuring circuit, a main processor circuit, a power supply circuit, etc. Among them, the time difference measuring circuit mainly generates an initial pulse signal for driving the transducer to work and measures the propagation and reflection time in the ultrasonic anchor. The transducer driving circuit amplifies the initial pulse signal to meet the requirements of the transducer work and drives the transducer to emit ultrasonic waves. The amplifying and filtering circuit processes the ultrasonic echo signal, filters out the interference of clutter signals and noise, and makes the signal meet the requirements of the triggering time difference measurement unit for ultrasonic propagation time measurement.

[0075] In some embodiments, the high frequency transducer 113 is used to send a second signal to the anchor rod in response to the first signal sent by the data processing main circuit module 112 .

[0076] In the present application, the high-frequency transducer 113 may be an ultrasonic transducer made of piezoelectric ceramics, and the operating frequency of the ultrasonic transducer is between 100 kHz and 500 kHz. For example, a frequency of 200 kHz may be used to send the second signal.

[0077] In some embodiments, the signal transmission module 111 is used to send the stress change value obtained by the data processing main circuit module 112 to the transmission bus 12 .

[0078] It should be noted that since the stress sensor 11 is installed at the top of the anchor rod, Figure 2 The installation method of the stress sensor is also described in an exemplary manner. Figure 2 In the embodiment of the present application, the anchor rod 22 is installed in the working face tunnel, and the anchor rod fastening bolt 21 pre-tightens the anchor rod 22 in the coal rock body through the anchor rod fastening bolt gasket 23. In the embodiment of the present application, before the stress sensor is installed on the top of the anchor rod, the anchor rod force pre-tightening operation can be performed to ensure that the pre-tightening force is 300 GPa, and then the multiple anchor rod sections are leveled and cleaned.

[0079] The anchor stress monitoring system provided in the embodiment of the present application sends ultrasonic waves to the anchor rod through a stress sensor including a signal transmission module, a data processing main circuit module and a high-frequency transducer, and then measures the displacement change value of the anchor rod based on the reflection of the ultrasonic wave, and then determines the stress change value of the anchor rod, thereby improving the accuracy of anchor stress monitoring and providing a reliable data basis for risk position prediction and early warning of the working face.

[0080] In order to implement the above embodiment, the present application also proposes a method for monitoring anchor stress.

[0081] Figure 3 A schematic flow chart of an anchor stress monitoring method provided in an embodiment of the present application.

[0082] like Figure 3 As shown, the anchor stress monitoring method includes but is not limited to the following steps:

[0083] Step 301: Obtain stress change values ​​collected by a first number of stress sensors in a target working surface, and position information corresponding to each stress sensor.

[0084] In the disclosed embodiment, the anchor stress monitoring method may be implemented by the anchor stress monitoring system in the aforementioned embodiment, and the process of the stress sensor collecting the stress change value of the corresponding anchor may refer to the description in the aforementioned embodiment.

[0085] It should be noted that in the embodiment of the present application, in order to ensure the best stress monitoring effect in working surfaces of different heights and lengths, in the embodiment of the present application, the installation position and number of stress sensors in a working surface can also be determined according to the height and length of the working surface. Therefore, the first number and position information of the stress sensors can be determined in the following manner.

[0086] Optionally, the second number of stress sensors in the target working surface may be determined according to the first height of the target working surface, wherein the second number is the number of rows of the stress sensors.

[0087] It should be noted that the relationship between the first height and the second number can be determined based on experience. The higher the first height, the larger the second number, and the more rows of stress sensors installed in a working surface, thereby avoiding the distance between adjacent rows being too large, which would result in poor stress monitoring effect.

[0088] Then, the third number of stress sensors in the target working surface may be determined according to the length of the target working surface and a preset distribution rule, wherein the third number is the number of columns of the stress sensors.

[0089] In an embodiment of the present application, a preset distribution rule is used to determine the installation interval of each row of stress sensors, so that the number of stress sensors in each row can be determined based on the length of the target working surface and the preset installation interval, that is, the number of columns of stress sensors installed in the target working surface can be determined.

[0090] Thereafter, the first quantity may be determined based on the second quantity and the third quantity.

[0091] In the embodiment of the present application, the second number is multiplied by the third number to determine the first number of stress sensors that need to be installed in the target working surface, so as to improve the distribution rationality of anchor stress monitoring and ensure that the working surface can be comprehensively monitored.

[0092] Optionally, the preset distribution rule may include: within a first distance range, the first distance between two adjacent columns of stress sensors is a first value, wherein the first distance range is the distance from the starting point of the target working surface, and the maximum value in the first distance range is less than a preset distance threshold.

[0093] In the second distance range, the first distance between two adjacent columns of stress sensors is a second value, wherein the minimum value in the second distance range is greater than or equal to the distance threshold, and the second value is greater than the first value.

[0094] For example, when the distance threshold is 300 meters, the first distance range is less than 300 meters from the starting point of coal mining (i.e., cutting eye) of the target working face, then within the first distance range, the first value is 30 meters, that is, a stress sensor is arranged every 30 meters. The second distance range is greater than or equal to 300 meters from the starting point of coal mining (i.e., cutting eye) of the target working face, and the second value is 60 meters, then a stress sensor is installed every 60 meters.

[0095] It should be noted that the distance threshold, the first value, and the second value can be determined based on experience, and this application does not limit this. When the distance is less than the distance threshold, because the distance to the coal mining starting point is close, deformation and cracking of the coal rock mass are prone to occur, and more precise monitoring of stress changes is required, so stress sensors need to be installed at smaller intervals.

[0096] Optionally, the second height corresponding to each row of stress sensors may be determined according to the first height and the second number.

[0097] In the disclosed embodiment, the height difference between each row of stress sensors can be determined by dividing the first height by the second number, thereby obtaining the second height corresponding to each row of stress sensors. Alternatively, two rows of stress sensors can be installed at a certain distance (such as 0.5 meters) from the top plate and at a certain distance from the bottom plate, and then other rows can be installed at the same interval in the middle.

[0098] And, based on the first value and / or the second value, determining a second distance between each column of stress sensors and a starting point of the target working surface.

[0099] In the embodiment of the present application, starting from the coal mining starting point of the target working face, and the first value and / or the second value, the second distance between each column of stress sensors and the starting point of the target working face can be determined.

[0100] Then, the position information of each stress sensor in the target working surface can be determined based on the second height and the second distance, so that the stress sensors can be arranged in the working surface more reasonably and comprehensively, thereby improving the accuracy and reliability of stress monitoring.

[0101] It should be noted that in the embodiment of the present application, by detecting the coal cannon sound, coal wall spalling and deformation of the roof and floor plates at the mining face, additional stress sensors can be installed at locations where the coal cannon sound is louder or the deformation is more serious, thereby further improving the reliability of stress monitoring.

[0102] Step 302, determining the stress change gradient value between the anchor rods in the target working surface according to the stress change value and the position information.

[0103] Step 303: when the stress change gradient value is greater than the gradient threshold, generate warning information based on the position information of the anchor rod corresponding to the stress change gradient value.

[0104] It should be noted that step 302 and step 303 can be implemented by the server in the above-mentioned anchor stress monitoring system, so the detailed description of step 302 and step 303 can refer to the explanation of the server in the above-mentioned embodiment, which will not be repeated here.

[0105] In the embodiment of the present application, multiple stress sensors are used to collect stress change values ​​of anchor rods at different positions in the target working surface, and then based on the collected stress change values, the stress change gradient value between anchor rods in the target working surface is calculated, and then based on the relationship between the stress change gradient value and the gradient threshold, the position where there may be safety hazards in the working surface is located, and early warning information is generated. In this way, the stress change of anchor rods in the working surface can be monitored in real time to predict dangerous areas in the working surface and issue early warnings in time, thereby improving the accuracy and reliability of stress monitoring, and thus improving the safety of tunnel work.

[0106] In order to implement the above embodiments, the present application also proposes an electronic device, comprising: a processor, and a memory communicatively connected to the processor; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory to implement the anchor stress monitoring method provided in the above embodiments.

[0107] In order to implement the above embodiments, the present application also proposes a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the anchor stress monitoring method provided in the above embodiments.

[0108] In order to implement the above embodiments, the present application also proposes a computer program product, including a computer program, which, when executed by a processor, implements the anchor stress monitoring method provided by the above embodiments.

[0109] The collection, storage, use, processing, transmission, provision and disclosure of user personal information involved in this application are in compliance with relevant laws and regulations and do not violate public order and good morals.

[0110] It should be noted that personal information from users should be collected for legitimate and reasonable purposes and should not be shared or sold outside of these legitimate uses. In addition, such collection / sharing should be carried out after receiving the user's informed consent, including but not limited to notifying the user to read the user agreement / user notice and sign the agreement / authorization including authorization of relevant user information before the user uses the function. In addition, any necessary steps should be taken to protect and safeguard access to such personal information data and ensure that others who have access to personal information data comply with its privacy policy and procedures.

[0111] The present application is expected to provide an implementation scheme for users to selectively block the use or access of personal information data. That is, the present disclosure is expected to provide hardware and / or software to prevent or block access to such personal information data. Once the personal information data is no longer needed, the risk can be minimized by limiting data collection and deleting the data. In addition, when applicable, such personal information is de-identified to protect the privacy of the user.

[0112] In the description of the aforementioned embodiments, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 application. In this specification, the schematic representations of the above terms do 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. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0113] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0114] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application 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 technicians in the technical field to which the embodiments of the present application belong.

[0115] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute the instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0116] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for 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.

[0117] 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.

[0118] In addition, each functional unit in each embodiment of the present application 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.

[0119] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An anchor stress monitoring system, characterized in that: The system comprises: A stress sensor, a transmission bus, a sensor acquisition substation, a ring network switch and a server, wherein the stress sensor is connected to the sensor acquisition substation via the transmission bus, and the sensor acquisition substation and the server are respectively connected to the ring network switch; The stress sensor is used to collect stress change values ​​of the anchor rod at preset time intervals; The transmission bus is used to send the stress change value collected by the stress sensor to the sensor collection substation corresponding to the working surface to which the stress sensor belongs; The sensor acquisition substation is used to associate the received stress change value with the position information of the stress sensor corresponding to the stress change value, wherein each sensor acquisition substation corresponds to a working surface and receives the stress change values ​​collected by all stress sensors in the working surface; The ring network switch is used to send the stress change value and associated location information in any sensor acquisition substation to the server; The server is used to generate warning information according to the stress change value and the associated position information.

2. The system according to claim 1, characterized in that The stress sensor comprises: A signal transmission module, a data processing main circuit module and a high-frequency transducer, wherein the high-frequency transducer is connected to the data processing main circuit module, the data processing main circuit module is connected to the signal transmission module, and the signal transmission module is connected to the transmission bus; The data processing main circuit module is used to generate a first signal at a preset time interval, and send the first signal to the high-frequency transducer, wherein the first signal is used to drive the high-frequency transducer to send a second signal to the anchor rod, and receive a third signal returned by the anchor rod, and determine the displacement change value of the anchor rod based on the second signal and the third signal, and determine the stress change value of the anchor rod based on the displacement change value and a reference relationship between displacement and stress; The high frequency transducer is used to send a second signal to the anchor rod in response to the first signal sent by the data processing main circuit module; The signal transmission module is used to send the stress change value obtained by the data processing main circuit module to the transmission bus.

3. The system according to claim 1, characterized in that The system comprises one or more sensor acquisition substations, each of which is connected to a first number of stress sensors; The first number is determined by the height and / or length of the working surface associated with the sensor acquisition substation, and the first number of stress sensors are respectively installed at the top ends of the first number of anchor rods in the working surface.

4. The system according to claim 1, characterized in that The server is specifically used for: Determine the stress change gradient value between the anchor rods in the working surface corresponding to the sensor acquisition substation according to the stress change value and the associated position information; When the stress change gradient value is greater than the gradient threshold, a warning message is generated based on the position information of the anchor rod corresponding to the stress change gradient value.

5. The system according to claim 4, characterized in that The server is specifically used for: A stress cloud map corresponding to the working surface is generated according to the stress change value and the associated position information, and the stress cloud map is displayed.

6. The system according to claim 1, characterized in that The sensor acquisition substation also includes a data storage module and a clock module; The data storage module is used to store the received stress change value when the line between the sensor acquisition substation and the server is disconnected; The clock module is used to associate the stress change value stored in the data storage module with the collection time corresponding to the stress change value.

7. A method for monitoring anchor stress, characterized in that: The following steps are involved: Acquire stress change values ​​respectively collected by a first number of stress sensors in the target working surface, and position information corresponding to each of the stress sensors; Determining the stress change gradient value between the anchor rods in the target working surface according to the stress change value and the position information; When the stress change gradient value is greater than the gradient threshold, a warning message is generated based on the position information of the anchor rod corresponding to the stress change gradient value.

8. The method according to claim 7, characterized in that Before acquiring the stress change values ​​collected by the first number of stress sensors in the target working surface and the position information corresponding to each of the stress sensors, the method further includes: Determine, according to the first height of the target working surface, a second number of stress sensors in the target working surface, wherein the second number is the number of rows of stress sensors; Determine, according to the length of the target working surface and a preset distribution rule, a third number corresponding to the stress sensors in the target working surface, wherein the third number is the number of columns of the stress sensors; Based on the second number and the third number, a first number is determined.

9. The method according to claim 8, characterized in that The preset distribution rules include: In a first distance range, a first distance between two adjacent rows of stress sensors is a first value, wherein the first distance range is the distance from the starting point of the target working surface, and a maximum value in the first distance range is less than a preset distance threshold; In the second distance range, the first distance between two adjacent columns of stress sensors is a second value, wherein the minimum value in the second distance range is greater than or equal to the distance threshold, and the second value is greater than the first value.

10. The method according to claim 9, characterized in that Also includes: Determine a second height corresponding to each row of stress sensors according to the first height and the second number; Determine a second distance between each column of stress sensors and a starting point of the target working surface based on the first value and / or the second value; Based on the second height and the second distance, position information of each stress sensor in the target working surface is determined.

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