Prompting method and device for rock stratum stress in mine pit and storage medium

Abstract

The invention discloses a prompting method and device for rock stratum stress in a mine pit and a storage medium. The method comprises the steps that an initial electric signal corresponding to rock stratum stress at the current moment in a mine pit is obtained, and the rock stratum stress is used for representing the pressure caused by historical mining operation tasks executed in the mine pit before the current moment on a rock stratum in the mine pit; enhancing the initial electric signal to obtain a target electric signal, and converting the target electric signal into a digital signal, the signal intensity of the target electric signal being greater than the signal intensity of the initial electric signal; in response to the fact that the digital signal is larger than the digital signal threshold value, prompt information corresponding to the rock stratum stress is output, and the prompt information is used for indicating that the rock stratum stress does not meet the requirement for executing the mining operation task on the mine pit at the future moment. The technical problem that the accuracy of prompting the stress of the rock stratum in the mine pit is low is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of mine safety monitoring, and in particular to a method, a device and a storage medium for prompting rock layer stress in a mine pit. Background Art

[0002] At present, the stability of rock formations is related to the safety of mining during mining. As a mining area in a mine, if the rock formation stress reaches a certain level and the stability of the rock formation is low, the broken rock formation will damage the surface under the action of gravity, causing surface subsidence, cracks, collapse and other disasters, resulting in economic losses and casualties in the mining pit.

[0003] In the related art, if it is necessary to ensure the safety of personnel in the mining process, the rock formation stress can be monitored manually and regularly. However, in the case of abnormal changes in the rock formation stress, the above abnormality may not be detected in time, so that it is impossible to issue prompt information to the personnel in the mining pit in time, increasing the risk of mining accidents. Therefore, there is still a technical problem of low accuracy in prompting rock formation stress in the mine.

[0004] With respect to the above-mentioned technical problem of low accuracy in indicating rock stratum stress in a mine pit, no effective solution has been proposed so far. Summary of the invention

[0005] The embodiments of the present invention provide a method, device and storage medium for prompting rock formation stress in a mine pit, so as to at least solve the technical problem of low accuracy in prompting rock formation stress in a mine pit.

[0006] According to one aspect of an embodiment of the present invention, a method for prompting rock formation stress in a mine is provided. The method may include: obtaining an initial electrical signal corresponding to the rock formation stress at the current moment in the mine, wherein the rock formation stress is used to indicate the pressure caused to the rock formation in the mine by the historical mining operation tasks performed before the current moment in the mine; performing enhancement processing on the initial electrical signal to obtain a target electrical signal, and converting the target electrical signal into a digital signal, wherein the signal strength of the target electrical signal is greater than the signal strength of the initial electrical signal; in response to the digital signal being greater than the digital signal threshold, outputting prompt information corresponding to the rock formation stress, wherein the prompt information is used to indicate that the rock formation stress does not meet the requirements for performing mining operation tasks on the mine at a future moment.

[0007] Optionally, obtaining an initial electrical signal corresponding to the rock stress at the current moment in the mine includes: using a pressure sensor deployed in the mine to collect a pressure signal of the rock stress; in response to a signal conversion device under the mine receiving the pressure signal, converting the pressure signal into an initial electrical signal.

[0008] Optionally, the initial electrical signal is enhanced to obtain a target electrical signal, including: filtering the initial electrical signal to obtain a filtered initial electrical signal, wherein the noise content of the filtered initial electrical signal is lower than the noise content of the initial electrical signal before filtering; and using a signal amplifier to enhance the initial electrical signal to obtain a target electrical signal.

[0009] Optionally, converting the target electrical signal into a digital signal includes: transmitting the target electrical signal to an analog-to-digital converter, and converting the target electrical signal into a digital signal using the analog-to-digital converter.

[0010] Optionally, a light-emitting device is deployed on the mine steps corresponding to the mine pit, and the prompt information includes light prompt information, wherein in response to the digital signal being greater than the digital signal threshold, prompt information corresponding to the rock formation stress is output, including: in response to the digital signal being greater than the digital signal threshold, the light-emitting device is controlled to output light prompt information.

[0011] Optionally, the method may further include: in response to the digital signal being less than or equal to a digital signal threshold, detecting an initial electrical signal at a current moment.

[0012] According to another aspect of an embodiment of the present invention, a device for prompting rock formation stress in a mine is also provided. The device may include: an acquisition unit, used to acquire an initial electrical signal corresponding to the rock formation stress at the current moment in the mine, wherein the rock formation stress is used to indicate the pressure caused to the rock formation in the mine by the historical mining operation tasks performed before the current moment in the mine; a processing unit, used to enhance the initial electrical signal to obtain a target electrical signal, and convert the target electrical signal into a digital signal, wherein the signal strength of the target electrical signal is greater than the signal strength of the initial electrical signal; an output unit, used to output prompt information corresponding to the rock formation stress in response to the digital signal being greater than the digital signal threshold, wherein the prompt information is used to indicate that the rock formation stress does not meet the requirements for performing mining operations on the mine at a future moment.

[0013] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is also provided. The computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the method for prompting rock formation stress in a mine pit according to an embodiment of the present invention.

[0014] According to another aspect of an embodiment of the present invention, a processor is provided, which is used to run a program, wherein when the program is run, the method for prompting rock formation stress in a mine pit according to an embodiment of the present invention is executed.

[0015] According to another aspect of the present invention, a computer program product is provided, which includes a computer program, and when the computer program is executed by a processor, the method for prompting rock formation stress in a mine pit according to the embodiment of the present application is implemented.

[0016] In an embodiment of the present invention, if the rock formation stress in the mine is to be prompted, the initial electrical signal corresponding to the rock formation stress at the current moment in the mine can be obtained, the pressure caused by the historical mining operations performed in the mine before the current moment on the rock formation in the mine can be converted into an electrical signal, the signal strength enhancement processing can be performed to obtain the target electrical signal, and the target electrical signal can be converted into a digital signal, so as to judge the magnitude relationship between the digital signal and the digital signal threshold. If the digital signal is greater than the digital signal threshold, the prompt information corresponding to the rock formation stress can be output to prompt the personnel in the mining pit, indicating that it is not suitable to perform mining operations at a future time and that they need to evacuate as soon as possible. Through the above method, real-time monitoring of rock formation stress can be achieved, overcoming the situation that manual labor cannot timely monitor abnormal changes in rock formation stress, achieving the purpose of being able to timely send prompt information to personnel in the mining pit, thereby achieving the technical effect of improving the accuracy of prompting rock formation stress in the mine, and solving the technical problem of low accuracy of prompting rock formation stress in the mine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 is a flow chart of a method for prompting rock formation stress in a mine according to an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of a device for monitoring step stress in an open-pit mine and providing an early warning according to an embodiment of the present invention;

[0020] Figure 3 This is a flowchart of the operation of a device for monitoring step stress in an open-pit mine and providing an early warning according to an embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of a three-dimensional view of hole arrangement positions according to an embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of three views of hole arrangement positions according to an embodiment of the present invention;

[0023] Figure 6 It is a schematic diagram of a side view of the relationship between hole arrangement positions and empty lane positions according to an embodiment of the present invention;

[0024] Figure 7 It is a schematic diagram of a front view of the relationship between hole arrangement positions and empty lane positions according to an embodiment of the present invention;

[0025] Figure 8 is a schematic diagram of an enlarged front view of the relationship between hole arrangement positions and empty lane positions according to an embodiment of the present invention;

[0026] Fig. 9 It is a schematic diagram of a hole arrangement method and a device placement diagram for monitoring open-pit mine step stress and providing early warning according to an embodiment of the present invention;

[0027] Fig.10 It is a schematic diagram of a device for prompting rock formation stress in a mine according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] According to an embodiment of the present invention, an embodiment of a method for prompting rock formation stress in a mine is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0031] Figure 1 FIG. 1 is a flow chart of a method for prompting rock formation stress in a mine according to an embodiment of the present invention. Figure 1 As shown, the method may include the following steps:

[0032] Step S102, obtaining an initial electrical signal corresponding to the rock stratum stress in the mine at the current moment.

[0033] In the technical solution provided in the above step S102 of the present invention, the rock formation stress can be used to represent the pressure caused by the historical mining operations performed before the current moment on the rock formation in the mine. The rock formation stress can be used to measure the stability of the rock formation in the mine. The initial electrical signal can be determined by a pressure sensor. The initial electrical signal can be a voltage, current, frequency signal, etc.

[0034] In this embodiment, if it is necessary to obtain the initial electrical signal corresponding to the rock formation stress at the current moment in the mine, on the one hand, the initial electrical signal corresponding to the rock formation stress can be obtained by real-time monitoring through a pressure sensor; the initial electrical signal corresponding to the rock formation stress can also be obtained by monitoring the displacement of the rock formation through a displacement sensor; the initial electrical signal corresponding to the rock formation stress can also be obtained by monitoring the sound wave propagating in the rock formation through an acoustic wave sensor. On the other hand, the pressure signal corresponding to the rock formation stress can be converted into the initial electrical signal through a signal conversion device.

[0035] It should be noted that the above-mentioned method and device for obtaining the initial electrical signal are only for illustration and are not specifically limited here, and are all within the protection scope of the embodiments of the present invention.

[0036] Step S104, performing enhancement processing on the initial electrical signal to obtain a target electrical signal, and converting the target electrical signal into a digital signal.

[0037] In the technical solution provided in step S104 of the present invention, after obtaining the initial electrical signal corresponding to the rock formation stress at the current moment in the mine, the initial electrical signal can be enhanced to obtain the target electrical signal, and the target electrical signal can be converted into a digital signal. The signal strength of the target electrical signal is greater than the signal strength of the initial electrical signal. The digital signal can represent the numerical value of the rock formation pressure.

[0038] In this embodiment, since the initial electrical signal is usually weak and easily affected by environmental noise or attenuated after long-distance transmission, in order to improve the signal-to-noise ratio and accuracy of the initial electrical signal, the initial electrical signal can be enhanced to obtain a target electrical signal with a signal strength higher than that of the initial electrical signal, and the target electrical signal is converted into a digital signal.

[0039] Optionally, if the initial electrical signal needs to be enhanced, a signal amplifier, such as an operational amplifier circuit, can be used to enhance the signal strength of the initial electrical signal. The initial electrical signal can also be processed by a digital signal processor to enhance the signal strength of the initial electrical signal. The sampling rate can also be increased or a higher precision device can be used to obtain a target electrical signal with a higher signal strength than the initial electrical signal.

[0040] It should be noted that the above-mentioned method of enhancing the initial electrical signal is only an example and is not specifically limited here. As long as it can be used to enhance the initial electrical signal, it is within the protection scope of the embodiment of the present invention.

[0041] Optionally, the target electrical signal can be converted into a digital signal by sampling and quantizing the analog signal through an analog-to-digital converter and then converting it into a corresponding digital code to obtain a digital signal. The target electrical signal can also be digitally processed by a digital signal processor to obtain a digital signal.

[0042] It should be noted that the above-mentioned signal conversion method is only an example and is not specifically limited here. As long as it can be used to convert the target electrical signal into a digital signal, it is within the protection scope of the embodiment of the present invention.

[0043] Step S106: in response to the digital signal being greater than the digital signal threshold, outputting prompt information corresponding to the rock formation stress.

[0044] In the technical solution provided in the above step S106 of the present invention, after the initial electrical signal is enhanced and processed to obtain the target electrical signal, and the target electrical signal is converted into a digital signal, a prompt information corresponding to the rock formation stress can be output when the digital signal is greater than the digital signal threshold. The prompt information is used to indicate that the rock formation stress does not meet the requirements for performing mining operations in the mine at a future time, and can be used to provide early warning prompts to personnel mining the mine. The digital signal threshold can be set comprehensively based on the tolerable pressure of the rock formation within a safe range, as well as historical data, rock formation properties, mining plans and other factors. The digital signal threshold can be used to evaluate rock formation stability and mining safety.

[0045] In this embodiment, the digital signal is compared with the digital signal threshold. If the digital signal is less than or equal to the digital signal threshold, the rock formation pressure is within a safe range, and the digital signal can continue to be monitored without triggering an early warning prompt. On the contrary, if the digital signal is greater than the digital signal threshold, the rock formation stability does not meet the safety requirements for performing mining operations at future times, and prompt information corresponding to the rock formation stress can be output to prompt personnel in the mining pit.

[0046] Optionally, the prompt information may be a visual prompt, an auditory prompt or a communication prompt, etc. For example, the prompt may be provided by a warning message on the screen of the monitoring device, a light warning of a light strip, an alarm sound, or by sending a warning SMS or email to a mine manager.

[0047] It should be noted that the above-mentioned method of prompting the prompt information corresponding to the rock formation stress is only an example for illustration and is not specifically limited here. As long as it can be used to prompt the rock formation stress, it is within the protection scope of the embodiment of the present invention.

[0048] In step S102 to step S106 of the embodiment of the present invention, if the rock formation stress in the mine is to be prompted, the initial electrical signal corresponding to the rock formation stress at the current moment in the mine can be obtained, the pressure caused by the historical mining operation tasks executed in the mine before the current moment on the rock formation in the mine can be converted into an electrical signal, the signal strength enhancement processing can be performed to obtain the target electrical signal, and the target electrical signal can be converted into a digital signal, so as to judge the magnitude relationship between the digital signal and the digital signal threshold. If the digital signal is greater than the digital signal threshold, the prompt information corresponding to the rock formation stress can be output to prompt the personnel of the mining pit, indicating that it is not suitable to mine the mine at this time. Through the above method, the situation that the abnormal changes in the rock formation stress cannot be monitored in time by humans can be overcome, and the purpose of sending prompt information to the personnel of the mining pit in time is achieved, thereby achieving the technical effect of improving the accuracy of prompting the rock formation stress in the mine, and solving the technical problem of low accuracy of prompting the rock formation stress in the mine.

[0049] The embodiment of the present invention is described in detail below in combination with the above steps.

[0050] As an optional embodiment, step S102, obtaining the initial electrical signal corresponding to the rock formation stress at the current moment in the mine, includes: using the pressure sensor deployed in the mine to collect the pressure signal of the rock formation stress; in response to the signal conversion device under the mine receiving the pressure signal, converting the pressure signal into the initial electrical signal.

[0051] In this embodiment, in the process of obtaining the initial electrical signal corresponding to the rock formation stress at the current moment in the mine, the pressure sensor deployed in the mine can be used to collect the pressure signal of the rock formation stress; when the signal conversion device under the mine receives the pressure signal, the pressure signal is converted into the initial electrical signal. The pressure sensor can be buried in the rock formation to monitor the stress changes inside the rock formation in real time.

[0052] Optionally, the pressure sensor can be designed to convert pressure into a voltage signal. When the rock formation stress acts on the pressure sensor, the sensitive elements inside the pressure sensor, such as the resistance strain gauge, the piezoresistive sensor, etc., will deform, and the deformation can cause the resistance value to change, thereby affecting the current passing through and generating a voltage signal corresponding to the pressure change. The pressure sensor can be designed to output a current signal. Based on the piezoelectric effect or the capacitive principle, the change in rock formation stress can cause the change in the output current of the pressure sensor. The pressure sensor can be designed as a frequency signal. Based on the vibration principle, the change in rock formation stress can affect the vibration frequency inside the pressure sensor, thereby outputting a frequency signal corresponding to the stress change. Through the above operations, the pressure signal can be converted into an initial electrical signal such as voltage, current, and frequency signal.

[0053] Optionally, when the rock formation stress changes, the pressure sensor converts the stress change into a pressure signal, which is usually an analog signal, such as voltage or current. The collected pressure signal can be transmitted from the inside of the rock formation to the signal conversion device in the pit. After receiving the pressure signal, the signal conversion device in the pit can convert the pressure signal into an initial electrical signal, thereby realizing real-time monitoring and analysis of rock formation stress, improving mine safety, and preventing the occurrence of geological disasters.

[0054] As an optional embodiment, the pressure sensor is connected to the down-pit signal conversion device through an external pipeline.

[0055] In this embodiment, the external pipeline can be connected to the signal conversion device in the pit, and the pressure sensor can be used to convert the pressure into an electrical signal. The external pipeline can be a cable or optical fiber with good signal transmission performance and environmental adaptability, which can not only stably transmit signals, but also has waterproof, shockproof and corrosion-resistant properties to ensure the integrity of the signal in the harsh environment of the mine.

[0056] Optionally, the underground signal conversion device can be located in the underground environment of the mine, close to the pressure sensor, so as to reduce the transmission distance of the initial electrical signal and improve the real-time performance and accuracy of the initial electrical signal.

[0057] As an optional embodiment, step S104, enhancing the initial electrical signal to obtain a target electrical signal, includes: filtering the initial electrical signal to obtain a filtered initial electrical signal, wherein the noise content of the filtered initial electrical signal is lower than the noise content of the initial electrical signal before filtering; and enhancing the initial electrical signal using a signal amplifier to obtain a target electrical signal.

[0058] In this embodiment, in the process of enhancing the initial electrical signal to obtain the target electrical signal, the initial electrical signal can be filtered to obtain the filtered initial electrical signal; and the initial electrical signal can be enhanced by using a signal amplifier to obtain the target electrical signal. The noise content of the filtered initial electrical signal is lower than the noise content of the initial electrical signal before filtering.

[0059] Optionally, the initial electrical signal received from the pressure sensor may contain noise. In order to reduce the impact of such noise on the quality of the target electrical signal, a filter may be used to process the initial electrical signal. The filter may be an analog filter or a digital filter, which may retain the useful frequency components in the target electrical signal while filtering out the unnecessary noise components. The initial electrical signal after filtering has a lower noise content than the initial electrical signal before filtering.

[0060] Optionally, although the quality of the initial electrical signal after filtering is improved, the signal strength of the initial electrical signal may still be weak. A signal amplifier can be used to enhance the filtered initial electrical signal, which can linearly amplify the input initial electrical signal and output a stronger target electrical signal. The signal amplifier can be an analog amplifier or a digital amplifier. The analog amplifier can directly amplify the analog signal, while the digital amplifier can convert the initial electrical signal into a digital signal. Digital signals can simplify signal transmission and processing, and can also improve the accuracy and reliability of rock formation pressure, which is an important basis for realizing real-time monitoring and prompting of rock formation stress.

[0061] Optionally, after amplifying the initial electrical signal and converting the target electrical signal into a digital signal through analog-to-digital (AD) processing, the signal can be analyzed and processed by a single chip microcomputer.

[0062] As an optional embodiment, step S104, converting the target electrical signal into a digital signal, includes: transmitting the target electrical signal to an analog-to-digital converter, and converting the target electrical signal into a digital signal using the analog-to-digital converter.

[0063] In this embodiment, in the process of converting the target electrical signal into a digital signal, the target electrical signal may be transmitted to an analog-to-digital converter, and the target electrical signal may be converted into a digital signal using the analog-to-digital converter.

[0064] Optionally, the target electrical signal after the enhancement processing is still in an analog state, which is an analog signal. The analog-to-digital converter (ADC) can convert the continuously changing analog signal into a discrete digital signal through sampling and quantization. In rock formation stress monitoring, the ADC can receive the target electrical signal and convert the target electrical signal into a digital signal according to a certain sampling frequency and quantization accuracy. Digital signals are easier to store, transmit and process, have higher stability and repeatability, and can provide a data basis for long-term monitoring and regularity research of rock formation stress changes.

[0065] As an optional embodiment, a light-emitting device is deployed on the mine steps corresponding to the mine pit, and the prompt information includes light prompt information, wherein in response to the digital signal being greater than the digital signal threshold, prompt information corresponding to the rock formation stress is output, including: in response to the digital signal being greater than the digital signal threshold, the light-emitting device is controlled to output light prompt information.

[0066] In this embodiment, in the process of outputting prompt information corresponding to rock formation stress when the digital signal is greater than the digital signal threshold, if the digital signal is greater than the digital signal threshold, the light emitting device can be controlled to output light prompt information. The light emitting device can be deployed on the mine steps corresponding to the mine pit, for example, it can be a light emitting diode (LED) light strip. The prompt information can be light prompt information, such as a red light.

[0067] Optionally, when monitoring rock formation stress, the digital signal transmitted from the ADC can be received and analyzed by the single chip microcomputer, and whether the internal pressure of the rock formation is higher than the digital signal threshold can be determined based on the above analysis and processing results. If the internal pressure of the rock formation is greater than the digital signal threshold, the LED light strip can be triggered to light up to prompt the on-site staff that the rock formation pressure is abnormal.

[0068] Optionally, the prompt function of the LED light strip can be activated using a specific control signal (such as a digital signal). The control signal can be a simple binary instruction to instruct the LED light strip to turn on or change color, for example, the LED light strip changes from green or yellow to red for prompting.

[0069] As an optional embodiment, the method further includes: in response to the digital signal being less than or equal to the digital signal threshold, detecting the initial electrical signal at the current moment.

[0070] In this embodiment, if the digital signal is less than or equal to the digital signal threshold, the initial electrical signal at the current moment can be detected.

[0071] Optionally, if the internal pressure of the rock formation is not greater than the upper limit value, that is, the current rock formation stress is within a safe range and has not reached the warning standard, the initial electrical signal at the current moment can be detected, and a closed-loop detection and warning cycle can be formed by performing real-time detection of the rock formation stress.

[0072] In an embodiment of the present invention, if it is necessary to give a prompt for the rock formation stress in the mine, the initial electrical signal corresponding to the rock formation stress at the current moment in the mine can be obtained, the pressure caused by the historical mining operation tasks executed in the mine before the current moment on the rock formation in the mine can be converted into an electrical signal, the signal strength enhancement processing can be performed to obtain the target electrical signal, and the target electrical signal can be converted into a digital signal, so as to judge the magnitude relationship between the digital signal and the digital signal threshold. If the digital signal is greater than the digital signal threshold, the prompt information corresponding to the rock formation stress can be output to prompt the personnel of the mining pit, indicating that it is not suitable to mine the mine at this time. Through the above method, the situation that the abnormal changes in the rock formation stress cannot be monitored in time by humans can be overcome, and the purpose of timely issuing prompt information to the personnel of the mining pit is achieved, thereby achieving the technical effect of improving the accuracy of the prompt for the rock formation stress in the mine, and solving the technical problem of low accuracy of the prompt for the rock formation stress in the mine.

[0073] The technical solution of the embodiment of the present invention is illustrated below in conjunction with preferred implementation modes.

[0074] Coal rock mass stress refers to the basic parameter for preventing coal rock dynamic disasters during coal mining. Real-time monitoring of coal rock mass stress is very urgent to solve the problem of sudden collapse of the roof of the step rock layer or the goaf area in the coal seam due to the impact of mining during open-pit coal mining. Before being affected by mining, the internal force of the coal rock mass above the goaf is balanced. After mining, the upper soil and rock are blasted and peeled off layer by layer, causing damage to the original rock layer stress. In addition, the upper operating electric shovel and transport truck have a large deadweight, which will increase the risk of collapse and damage of the upper rock layer in the goaf.

[0075] At present, in order to monitor the stress and strain inside the overlying surrounding rock on the roof of the goaf, the pressure sensor and the acoustic emission observation instrument can be connected to understand the rock fracture situation and location in the rock body in advance, so as to achieve the purpose of early warning before collapse. The embodiment of the present invention proposes a device for monitoring the stress and early warning of the open-pit mine step, which can monitor the internal pressure value of the rock layer of the open-pit mine step in real time, and at the same time play the function of over-limit early warning, and can also be used for ground stress testing and stability analysis of overlying rock layers in underground projects and tunnels.

[0076] Figure 2 is a schematic diagram of a device for monitoring step stress in an open-pit mine and providing an early warning according to an embodiment of the present invention. Figure 2As shown, the device for monitoring step stress in an open-pit mine and providing an early warning includes: a pressure gauge 201, an oil filling hole 202, a cylindrical force transmission housing 203, a hydraulic oil box 204, a three-way oil valve 205, a stainless steel high-pressure oil pipe 206, an external electronic pipeline 207 and a pressure sensor 208.

[0077] The pressure gauge 201 can be used to display the real-time pressure inside the device, making it easier for on-site technicians to monitor the status of the device.

[0078] The oil filling hole 202 can be used to inject hydraulic oil into the hydraulic oil box before the device is installed, and to supplement the oil or adjust the pressure during the use of the device. The air inside the device can be removed through the oil filling hole to ensure the accurate transmission of the pressure signal.

[0079] The cylindrical force transmission housing 203 can transmit the pressure inside the rock formation to the pressure sensor. The cylindrical design of the housing helps to evenly distribute the pressure applied by the rock formation, reduce local stress concentration, and improve the accuracy and stability of the measurement.

[0080] The hydraulic oil box 204 may contain hydraulic oil as a pressure transmission medium. When the rock formation pressure acts on the force transmission housing, the hydraulic oil will be pressurized accordingly and transmit the pressure change to the pressure sensor.

[0081] The three-way oil valve 205 connects the hydraulic oil box 204 and the cylindrical force transmission housing 203 , and can be used to control the flow direction of the hydraulic oil inside the hydraulic oil box 204 .

[0082] The stainless steel high-pressure oil pipe 206 can connect the hydraulic oil box and the cylindrical force transmission housing to achieve stable transmission of the hydraulic oil. The high-pressure oil pipe must be able to withstand the high pressure inside the rock formation and the hydraulic pressure when the device is working.

[0083] The external electronic pipeline 207 can be used to connect the pressure sensor with the ground signal processing equipment, transmit the electrical signal generated by the pressure sensor, and realize remote monitoring and analysis of data.

[0084] The pressure sensor 208 can be used to convert the internal pressure of the rock formation into a transmittable electrical signal. The sensitivity and accuracy of the sensor directly affect the accuracy of the monitoring data.

[0085] The device can also be equipped with an additional alarm device. When the internal pressure of the rock formation exceeds the preset warning threshold, the alarm device will send a warning signal to remind on-site personnel to take safety measures.

[0086] In an embodiment of the present invention, through the synergistic effect of the above-mentioned components, the device for monitoring the stress of open-pit mine steps and issuing early warnings can measure and record the changes in the internal pressure of the rock formation in real time and accurately, and at the same time has an early warning function, thereby providing an effective means for monitoring the stability of step rock formations in open-pit coal mines and issuing early warnings for roof collapse in goaf areas, thereby ensuring long-term stable operation in complex mining environments.

[0087] Figure 3 FIG. 1 is a flowchart of a device for monitoring step stress in an open-pit mine and providing early warning according to an embodiment of the present invention. Figure 3 As shown, the following steps are included:

[0088] Step S301, detecting the pressure signal corresponding to the open-pit mine step stress.

[0089] In this embodiment, before burying, a hydraulic pump can be used to fill the oil shell with oil to exhaust the internal air, bury it in a pre-drilled hole, fill the hole with cement mortar, wait for the mortar wrapped around the device to reach the condensation strength, and then inject hydraulic oil through the oil injection hole through a stainless steel pipe to apply initial pressure. After 24 hours, the stable value is the initial bearing pressure, and thereafter the value changes with the rock formation pressure. When the signal data is detected, the pressure signal corresponding to the open-pit mine step stress can be detected.

[0090] Step S302: Perform AD conversion on the detected pressure signal to convert it into a digital signal.

[0091] In this embodiment, AD conversion is performed on the detected pressure signal, and the pressure signal can be converted into a digital signal through ADC, and the converted digital signal can be processed and analyzed by a microprocessor or other digital devices.

[0092] Step S303, analyzing and processing the digital signal by using the AT89C51 single chip microcomputer.

[0093] In this embodiment, the AT89C51 single chip microcomputer can perform operations such as filtering and smoothing on the received digital signal to remove noise and interference, thereby improving the quality and reliability of the digital signal.

[0094] Step S304, the dispatch command center displays the pressure value to determine whether the digital signal is higher than the upper limit.

[0095] In this embodiment, an electronic pipeline can be installed, and the pressure data can be transmitted to the dispatching command center through an external pressure sensor and the electronic pipeline, so as to realize real-time monitoring of the pressure above the goaf, so as to determine whether the digital signal is higher than the upper limit. If it is higher than the upper limit, step S305 is executed, otherwise, step S301 is executed.

[0096] Step S305, sounding an alarm via the light strip.

[0097] In this embodiment, the pressure value displayed by the dispatch command center is compared with the digital signal threshold. When the digital signal is higher than the upper limit, an alarm can be issued through the light strip.

[0098] Optionally, the electronic pipeline can be connected to the pressure alarm system, and an LED light strip can be buried along the edge of the tunnel on the steps above the empty tunnel. When the rock and equipment pressure above the empty tunnel exceeds the set pressure value, the LED light strip can display red to warn.

[0099] In the embodiment of the present invention, the pressure signal corresponding to the step stress of the open-pit mine is detected, the detected pressure signal is AD converted into a digital signal, and the digital signal is analyzed and processed by the AT89C51 single-chip microcomputer to determine whether the digital signal is higher than the upper limit. When the digital signal is higher than the upper limit, an alarm can be issued through a light strip, thereby achieving the technical effect of improving the accuracy of the prompt of the rock stratum stress in the mine pit, and solving the technical problem of low accuracy of the prompt of the rock stratum stress in the mine pit.

[0100] The following is a further description using the rock mass pressure above the goaf area of ​​the above-mentioned device for monitoring step stress in an open-pit mine and issuing early warning as an example.

[0101] Since the device for monitoring open-pit mine step stress and issuing early warning can only monitor vertical pressure in a single direction, it can be installed horizontally in the rock layer of the vertical step, determine the monitoring range and drilling arrangement range according to the position of the empty tunnel, and determine the drilling depth according to the lateral depth range of the empty tunnel.

[0102] Figure 4 is a schematic diagram of a three-dimensional view of hole arrangement positions according to an embodiment of the present invention, such as Figure 4 As shown, the borehole installation needs to fully consider the density of measuring points in the vertical direction to be as uniform as possible, and the horizontal arrangement distance of the boreholes should be based on the tunnel width and the effective monitoring range of the device. Here, the effective monitoring range of a single device is set to 6m vertically, and 3 rows of boreholes are designed to be installed perpendicular to the empty tunnel.

[0103] Figure 5 is a schematic diagram of a three-view drawing of a hole arrangement position according to an embodiment of the present invention, such as Figure 5 As shown, the arrangement position and direction of the drilling holes in space can be fully displayed through the front view (a), side view (b) and top view (c).

[0104] Figure 6 is a schematic diagram of a side view of the relationship between hole arrangement positions and empty lane positions according to an embodiment of the present invention, such as Figure 6As shown, the relationship between the borehole and the empty roadway (goaf) in the lateral position is clearly shown. In an open-pit coal mine or underground mine, this side view is very important to ensure accurate measurement of the pressure of the rock formation above the goaf.

[0105] Figure 7 is a schematic diagram of a front view of the relationship between hole arrangement positions and empty lane positions according to an embodiment of the present invention, such as Figure 7 As shown, the relative positions of the drill hole and the empty tunnel can be displayed from the direction perpendicular to the tunnel.

[0106] Figure 8 1 is a schematic diagram of a front view of an enlarged view of the relationship between hole arrangement positions and empty lane positions according to an embodiment of the present invention, such as Figure 8 As shown, the relative position and details of the borehole and the empty tunnel in the vertical direction can be displayed more clearly, which can ensure that the borehole is accurately placed at the planned position to accurately measure the internal pressure of the rock formation.

[0107] Fig. 9 Schematic diagram of a hole arrangement method and a device placement diagram for monitoring open-pit mine step stress and providing early warning according to an embodiment of the present invention, such as Fig. 9 As shown, the arrangement of the boreholes and the specific placement of the monitoring device can be displayed in detail, and the circle can indicate the location of the borehole.

[0108] In this embodiment, in order to realize real-time monitoring of rock formation stress changes, the external pipeline can be connected to the signal conversion device under the pit, and the pressure is converted into an electrical signal by a sensor. After amplification and AD conversion of the digital signal, it is analyzed and processed by a single-chip microcomputer. The processing result is transmitted to the dispatching and command center, and the pressure value monitoring and tendency analysis can be carried out in real time, and at the same time, it is judged whether it is higher than the upper limit value. When the pressure value is greater than the upper limit, the light belt pre-buried in the step is used to light up the alarm, and when the pressure value is not greater than the upper limit, it returns to the pressure signal monitoring link for circulation. The external pipeline can be used to connect the transmission line between the internal monitoring device of the rock formation (such as a pressure sensor) and the ground signal processing equipment. The ground signal processing equipment refers to the signal transmitted from the rock formation through the external pipeline located on the ground (usually the dispatching and command center or a special data processing room) during the open-pit mine step stress monitoring process. The above-mentioned ground signal processing equipment can convert the original signal from the mine into interpretable information to realize real-time monitoring and early warning of rock formation stress changes.

[0109] According to an embodiment of the present invention, a device for indicating rock stratum stress in a mine is also provided. It should be noted that the device for indicating rock stratum stress in a mine can be used to execute the method for indicating rock stratum stress in a mine in the above embodiment.

[0110] Fig.10Schematic diagram of a device for indicating rock formation stress in a mine according to an embodiment of the present invention. Fig.10 As shown, the device 1000 for prompting rock formation stress in a mine may include: an acquisition unit 1002 , a processing unit 1004 and an output unit 1006 .

[0111] The acquisition unit 1002 is used to obtain an initial electrical signal corresponding to the rock formation stress in the mine at the current moment, wherein the rock formation stress is used to represent the pressure caused by the historical mining operations performed in the mine before the current moment on the rock formation in the mine.

[0112] The processing unit 1004 is used to perform enhancement processing on the initial electrical signal to obtain a target electrical signal, and convert the target electrical signal into a digital signal, wherein the signal strength of the target electrical signal is greater than the signal strength of the initial electrical signal.

[0113] The output unit 1006 is used to output prompt information corresponding to the rock formation stress in response to the digital signal being greater than the digital signal threshold, wherein the prompt information is used to indicate that the rock formation stress does not meet the requirements for performing mining operations on the mine at a future time.

[0114] In an embodiment of the present invention, an initial electrical signal corresponding to the rock formation stress at the current moment in the mine is acquired by the acquisition unit 1002, wherein the rock formation stress is used to indicate the pressure caused to the rock formation in the mine by the historical mining operations performed before the current moment in the mine; the initial electrical signal is enhanced by the processing unit 1004 to obtain a target electrical signal, and the target electrical signal is converted into a digital signal, wherein the signal strength of the target electrical signal is greater than the signal strength of the initial electrical signal; and prompt information corresponding to the rock formation stress is output by the output unit 1006 in response to the digital signal being greater than the digital signal threshold, wherein the prompt information is used to indicate that the rock formation stress does not meet the requirement of performing mining operations on the mine at a future moment, thereby achieving the technical effect of improving the accuracy of prompting the rock formation stress in the mine, and solving the technical problem of low accuracy of prompting the rock formation stress in the mine.

[0115] According to an embodiment of the present invention, a computer-readable storage medium is further provided, the storage medium comprising a stored program, wherein the program executes the method for prompting rock formation stress in a mine pit in the above embodiment.

[0116] According to an embodiment of the present invention, a processor is further provided. The processor is used to run a program. When the program is run, the method for prompting rock formation stress in a mine pit in the above embodiment is executed.

[0117] The embodiment of the present application also provides a computer program product. Optionally, in the present embodiment, the computer program product may include a computer program, and when the computer program is executed by a processor, the method for prompting rock formation stress in a mine pit of the embodiment of the present application is implemented.

[0118] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0119] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0120] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0121] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0122] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, Read-Only Memory (ROM), Random Access Memory (RAM), mobile hard disk, magnetic disk or optical disk, etc., various media that can store program codes.

[0123] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for indicating rock stratum stress in a mine, characterized in that: include: Acquire an initial electrical signal corresponding to the rock formation stress at the current moment in the mine, wherein the rock formation stress is used to represent the pressure caused by the historical mining operations performed in the mine before the current moment on the rock formation in the mine; Performing enhancement processing on the initial electrical signal to obtain a target electrical signal, and converting the target electrical signal into a digital signal, wherein the signal strength of the target electrical signal is greater than the signal strength of the initial electrical signal; In response to the digital signal being greater than a digital signal threshold, prompt information corresponding to the rock formation stress is output, wherein the prompt information is used to indicate that the rock formation stress does not meet the requirement for performing mining operations on the mine pit at a future time.

2. The method according to claim 1, characterized in that Obtain the initial electrical signal corresponding to the rock formation stress in the mine at the current moment, including: Using the pressure sensor deployed in the mine pit, the pressure signal of the rock formation stress is collected; In response to the underground signal conversion device of the mine receiving the pressure signal, the pressure signal is converted into the initial electrical signal.

3. The method according to claim 2, characterized in that The pressure sensor is connected to the pit signal conversion device through an external pipeline.

4. The method according to claim 1, characterized in that: Performing enhancement processing on the initial electrical signal to obtain a target electrical signal includes: Performing filtering processing on the initial electrical signal to obtain the filtered initial electrical signal, wherein the noise content of the filtered initial electrical signal is lower than the noise content of the initial electrical signal before filtering; The initial electrical signal is enhanced by using a signal amplifier to obtain the target electrical signal.

5. The method according to claim 4, characterized in that Converting the target electrical signal into a digital signal comprises: The target electrical signal is transmitted to an analog-to-digital converter, and the analog-to-digital converter is used to convert the target electrical signal into the digital signal.

6. The method according to claim 1, characterized in that A light-emitting device is deployed on the mine step corresponding to the mine pit, and the prompt information includes light prompt information, wherein, in response to the digital signal being greater than a digital signal threshold, the prompt information corresponding to the rock formation stress is output, including: In response to the digital signal being greater than the digital signal threshold, the light emitting device is controlled to output the light prompt information.

7. The method according to any one of claims 1 to 6, characterized in that The method further comprises: In response to the digital signal being less than or equal to a digital signal threshold, detecting the initial electrical signal at the current moment.

8. A device for indicating rock stress in a mine, characterized in that: include: An acquisition unit, used to acquire an initial electrical signal corresponding to the rock formation stress at the current moment in the mine, wherein the rock formation stress is used to represent the pressure caused by the historical mining operations performed in the mine before the current moment on the rock formation in the mine; a processing unit, configured to perform enhancement processing on the initial electrical signal to obtain a target electrical signal, and convert the target electrical signal into a digital signal, wherein the signal strength of the target electrical signal is greater than the signal strength of the initial electrical signal; The output unit is used to output the prompt information corresponding to the rock formation stress in response to the digital signal being greater than the digital signal threshold, wherein the prompt information is used to indicate that the rock formation stress does not meet the requirements for performing mining operations on the mine pit at a future time.

9. A processor, characterized in that: The processor is used to run a program, wherein the program, when run by the processor, executes the method for prompting rock formation stress in a mine as claimed in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a storage A program, wherein when the program is run, the device where the computer-readable storage medium is located is controlled to execute A method for indicating rock formation stress in a mine pit according to any one of claims 1 to 7.

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