Prompting device for rock stratum stress in mine pit

Abstract

The utility model discloses a prompt device for rock stratum stress in a mine pit. The device for prompting the stress of the rock stratum in the mine pit comprises a pressure sensor which is used for converting the stress of the rock stratum in the mine pit into an electric signal; the enhancement module is connected with the pressure sensor and is used for outputting an enhanced electric signal; the digital-to-analog converter is connected with the enhancement module and is used for converting the enhanced electric signal into a digital signal; the alarm module is connected with the digital-to-analog converter and used for being triggered by the digital signal to generate prompt information, 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. The technical problem that the stress of the rock stratum in the mine pit cannot be effectively prompted is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine safety monitoring, in particular to a device for prompting rock stratum stress in a mine pit. Background Art

[0002] At present, as a mining area in a mine, during mining, the mine pit is broken and cavities are constantly generated in the rock, and its internal pressure (rock stress) is also constantly increasing, which poses a hidden danger to the safety of the mining process.

[0003] In related technologies, mine workers can use monitoring equipment to regularly monitor rock formation stress. However, if abnormal changes in rock formation stress occur, these devices may not be able to detect the changes in rock formation pressure in a timely manner, and thus fail to promptly notify mine workers of the changes, posing a safety hazard. Therefore, the technical problem of being unable to effectively provide warnings about rock formation stress in mines still exists.

[0004] With respect to the above-mentioned technical problem of being unable to effectively indicate the stress of rock formations in mines, no effective solution has been proposed so far. Utility Model Content

[0005] The embodiment of the utility model provides a device for prompting rock stratum stress in a mine pit, so as to at least solve the technical problem that it is impossible to effectively prompt rock stratum stress in a mine pit.

[0006] According to one aspect of an embodiment of the present invention, a device for indicating rock stratum stress in a mine is provided. The device comprises: a pressure sensor for converting rock stratum stress within the mine into an electrical signal; an enhancement module connected to the pressure sensor for outputting the enhanced electrical signal; an analog-to-digital converter connected to the enhancement module for converting the enhanced electrical signal into a digital signal; and an alarm module connected to the analog-to-digital converter for generating a prompt message triggered by the digital signal, wherein the prompt message indicates that the rock stratum stress does not meet the requirements for performing mining operations in the mine.

[0007] Optionally, the prompt device may also include: a force transmission shell, used to respond to rock formation stress and generate deformation; a hydraulic oil box, connected to the force transmission shell and the pressure sensor, used to respond to deformation, and use the hydraulic oil in the hydraulic oil box to transmit the pressure signal corresponding to the rock formation stress to the pressure sensor.

[0008] Optionally, the force transmission housing is cylindrical in shape.

[0009] Optionally, the prompting device may further include: a pressure gauge connected to the hydraulic oil box, for displaying a pressure signal.

[0010] Optionally, the prompting device may further include: an oil filling hole connected to the hydraulic oil box and used for injecting hydraulic oil into the hydraulic oil box.

[0011] Optionally, the prompting device may further include: a first electronic pipeline connected to the pressure sensor and the enhancement module, and configured to transmit an electrical signal from the pressure sensor to the enhancement module.

[0012] Optionally, the prompting device may further include: a dispatching command center connected to the analog-to-digital converter and the alarm module, and configured to determine the magnitude relationship between the digital signal and the digital signal threshold.

[0013] Optionally, the prompt device may also include: a second electronic pipeline, connected to the alarm module and the dispatch command center, for sending a generation instruction corresponding to a digital signal greater than a digital signal threshold, wherein the generation instruction is used to trigger the alarm module to generate prompt information.

[0014] Optionally, the alarm module is a light strip alarm module, and the prompt information is red light strip prompt information, wherein the light strip alarm module is used to respond to the generation instruction and generate red light strip prompt information.

[0015] Alternatively, the device may be deployed in an empty tunnel in a mine.

[0016] In an embodiment of the present invention, a pressure sensor is configured to convert rock stress within a rock formation in a mine into an electrical signal; an enhancement module is connected to the pressure sensor and configured to output the enhanced electrical signal; an analog-to-digital converter is connected to the enhancement module and configured to convert the enhanced electrical signal into a digital signal; and an alarm module is connected to the analog-to-digital converter and configured to generate a prompt message triggered by the digital signal, wherein the prompt message indicates that the rock formation stress does not meet the requirements for performing mining operations in the mine. In this embodiment, by integrating the pressure sensor, signal enhancement module, analog-to-digital converter, and alarm module, effective monitoring and immediate prompting of rock formation stress in the mine can be achieved, avoiding the situation where manual equipment cannot promptly detect abnormal changes in rock formation stress. This achieves the purpose of providing prompts to personnel working in the mine, thereby achieving the technical effect of effectively prompting rock formation stress in the mine and resolving the technical problem of being unable to effectively prompt 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 1This is a schematic diagram of a device for indicating rock stress in a mine according to an embodiment of the present utility model;

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

[0020] Figure 3 Schematic diagram of another device for monitoring open pit mine step stress and providing early warning according to an embodiment of the present utility model;

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

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

[0023] Figure 6 This is a schematic diagram of a side view of the relationship between hole layout positions and empty lane positions according to an embodiment of the present utility model;

[0024] Figure 7 This is a schematic diagram of a front view of the relationship between hole layout positions and empty lane positions according to an embodiment of the present utility model;

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

[0026] Figure 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 utility model. DETAILED DESCRIPTION

[0027] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first," "second," and the like in the specification and claims of the present invention and the accompanying drawings are used to distinguish similar items and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0029] According to an embodiment of the present utility model, an embodiment of a device for prompting rock stratum stress in a mine is provided.

[0030] Figure 1 This is a schematic diagram of a device for indicating rock stress in a mine according to an embodiment of the present invention. Figure 1 As shown, the device 100 for indicating rock formation stress in a mine may include: a pressure sensor 102 , an enhancement module 104 , an analog-to-digital converter 106 and an alarm module 108 .

[0031] The pressure sensor 102 is used to convert the rock stress inside the rock formation in the mine into an electrical signal.

[0032] In this embodiment, the pressure sensor is a key measuring element of the rock formation stress detection device in the mine, and is used to convert the rock formation stress inside the rock formation into a transmittable electrical signal. The electrical signal can be a voltage, current, frequency signal, etc.

[0033] Optionally, the pressure sensor may be in direct contact with or embedded in the rock formation, and may sense rock formation stress caused by mining activities, its own gravity, or geological stress changes in the rock formation, and convert the pressure signal corresponding to the rock formation stress into an electrical signal.

[0034] Optionally, the pressure sensor can be designed as a device that converts pressure into a voltage signal. When rock formation stress acts on the pressure sensor, the sensitive elements inside the pressure sensor, such as resistance strain gauges, piezoresistive sensors, etc., will deform. This 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 as a device that outputs a current signal. Based on the piezoelectric effect or the capacitive principle, changes in rock formation stress can cause changes in the output current of the pressure sensor. The pressure sensor can be designed as a device that outputs a frequency signal. Based on the vibration principle, changes 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 corresponding to the rock formation stress inside the rock formation in the mine can be converted into electrical signals such as voltage, current, and frequency signals.

[0035] It should be noted that the design of the above pressure sensor is only an example and is not specifically limited here. As long as it can be used to convert a pressure signal into an electrical signal, the pressure sensor is within the scope of protection of the embodiments of the present utility model.

[0036] Optionally, the rock formation stress inside the rock formation may be converted into a transmittable electrical signal through a signal conversion device.

[0037] The enhancement module 104 is connected to the pressure sensor and is used to output an enhanced electrical signal.

[0038] In this embodiment, the enhancement module can be connected to the pressure sensor to output an enhanced electrical signal. The enhancement module can be a signal amplifier. Optionally, the electrical signal received by the enhancement module from the pressure sensor is usually in the form of voltage or current and may contain noise. In order to reduce the impact of the above-mentioned noise on the quality of the electrical signal, a filter can be used to process the electrical signal. In order to further enhance the electrical signal, a signal amplifier can be used to enhance the filtered electrical signal. The filter can be an analog filter or a digital filter, which can retain the useful frequency components in the target electrical signal while filtering out unnecessary noise components. The electrical signal after filtering has a lower noise content than the electrical signal before filtering. The electrical signal linearly amplified by the signal amplifier has a stronger output electrical signal strength.

[0039] The analog-to-digital converter 106 is connected to the enhancement module and is used to convert the enhanced electrical signal into a digital signal.

[0040] In this embodiment, an analog-to-digital converter (ADC) may be connected to the enhancement module to convert the enhanced electrical signal into a digital signal.

[0041] Alternatively, in rock formation stress monitoring, an ADC can receive electrical signals and convert them into digital signals at a specific sampling frequency and quantization accuracy. The enhanced electrical signal remains an analog signal, but through analog-to-digital (ADC) conversion, digital signals are easier to store, transmit, and process, offering greater stability and repeatability. This provides a data foundation for long-term monitoring and regularity analysis of rock formation stress changes.

[0042] The alarm module 108 is connected to the analog-to-digital converter and is used to be triggered by a digital signal to generate prompt information.

[0043] In this embodiment, the prompt information indicates that the rock formation stress does not meet the requirements for performing mining operations in the mine. The alarm module, also known as an alarm device, is connected to the analog-to-digital converter and can be triggered by the digital signal to generate a prompt information when the digital signal exceeds a digital signal threshold, indicating that safe mining conditions are not met.

[0044] Optionally, a digital signal threshold can be set based on the rock formation's tolerable pressure within a safe range, as well as historical data, rock formation properties, mining plans, and other factors. This digital signal threshold can be used to assess rock formation stability and mining safety. By comparing the digital signal with the digital signal threshold, it can be determined whether safe mining conditions are met.

[0045] Optionally, when 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 alert. When the digital signal exceeds the digital signal threshold, the alarm device can issue a prompt message, reminding on-site personnel to take safety measures. The alarm device can be an audible and visual alarm, an LED light strip, or other form of alarm device. For example, an LED light strip can be embedded in the edge of a mine step. When the rock formation stress exceeds the safe range, the LED light strip automatically turns red to provide a warning.

[0046] In an embodiment of the present invention, a pressure sensor is configured to convert rock stress within a rock formation in a mine into an electrical signal; an enhancement module is connected to the pressure sensor and configured to output the enhanced electrical signal; an analog-to-digital converter is connected to the enhancement module and configured to convert the enhanced electrical signal into a digital signal; and an alarm module is connected to the analog-to-digital converter and configured to generate a prompt message triggered by the digital signal, wherein the prompt message indicates that the rock formation stress does not meet the requirements for performing mining operations in the mine. In this embodiment, by integrating the pressure sensor, signal enhancement module, analog-to-digital converter, and alarm module, effective monitoring and immediate prompting of rock formation stress in the mine can be achieved, avoiding the situation where manual equipment cannot promptly detect abnormal changes in rock formation stress. This achieves the purpose of providing prompts to personnel working in the mine, thereby achieving the technical effect of effectively prompting rock formation stress in the mine and resolving the technical problem of being unable to effectively prompt rock formation stress in the mine.

[0047] The above-mentioned device of this embodiment is further introduced below.

[0048] As an optional embodiment, the device further includes: a force transmission housing configured to deform in response to rock formation stress; and a hydraulic oil cartridge connected to the force transmission housing and the pressure sensor, configured to respond to the deformation and utilize the hydraulic oil in the hydraulic oil cartridge to transmit a pressure signal corresponding to the rock formation stress to the pressure sensor. The force transmission housing may be cylindrical.

[0049] In this embodiment, the force transmission housing may deform under the influence of formation stress. This deformation allows the pressure sensor to indirectly measure the formation stress. A hydraulic oil cartridge is connected to the force transmission housing and the pressure sensor. The hydraulic oil cartridge may contain hydraulic oil. When the force transmission housing deforms due to formation stress, this deformation is transmitted to the hydraulic oil cartridge, causing a change in the hydraulic oil pressure. The hydraulic oil cartridge converts the deformation caused by formation stress into a pressure signal, which is then transmitted via the hydraulic oil to the connected pressure sensor for detection.

[0050] Optionally, hydraulic oil, an incompressible fluid, effectively and stably transmits pressure signals from deep within the rock formation to the pressure sensor. This fluid pressure transmission mechanism avoids potential problems such as pressure signal attenuation and interference, improving the stability and reliability of pressure signal transmission. The hydraulic oil cartridge must be well sealed to prevent oil leakage. Furthermore, the cartridge capacity must be large enough to ensure stable transmission of pressure signals despite fluctuations in rock formation pressure.

[0051] As an optional implementation, the force transmission housing is cylindrical in shape.

[0052] In this embodiment, by designing the shape of the force transmission shell to be cylindrical, when placed in the rock formation, it can directly respond to the pressure changes inside the rock formation. When the rock formation stress changes, the force transmission shell will produce corresponding deformation with the change of the rock formation stress, so that the force transmission shell can more accurately sense the changes in rock formation stress, especially for those rock formation areas that are not in direct contact with the pressure sensor.

[0053] Optionally, the force transmission housing can be made of high-strength, corrosion-resistant materials, such as stainless steel or special alloys, to ensure long-term stable operation in harsh rock environments. It should be noted that the selection of the material of the force transmission housing is only for illustration and is not a specific limitation here.

[0054] As an optional embodiment, the device further includes: a pressure gauge connected to the hydraulic oil box for displaying a pressure signal.

[0055] In this embodiment, the pressure gauge can be connected to the hydraulic oil box to display the real-time pressure signal inside the device for indicating rock stress in the mine, which is convenient for on-site staff to monitor.

[0056] Optionally, the pressure gauge can be of high precision and high pressure resistance, with a measuring range covering the maximum pressure range that may be exerted by the open pit mine step rock formation, and can ensure intuitive display through an intuitive reading interface.

[0057] As an optional embodiment, the device further includes: an oil filling hole connected to the hydraulic oil box and used for injecting hydraulic oil into the hydraulic oil box.

[0058] In this embodiment, the oil filling port is connected to the hydraulic oil cartridge, allowing hydraulic oil to be injected into the cartridge before installation of the mine stratum stress indication device, as well as for replenishing the hydraulic oil or adjusting the pressure during use of the mine stratum stress indication device. The oil filling port allows air to be removed from the mine stratum stress indication device, ensuring accurate transmission of the pressure signal.

[0059] Optionally, the oil filling hole should have good sealing properties to prevent leakage of hydraulic oil or entry of foreign matter during operation. It can be designed with a dust cover or a threaded seal structure to facilitate operation and ensure sealing.

[0060] As an optional embodiment, the device further includes: a first electronic pipeline connected to the pressure sensor and the enhancement module, and configured to transmit the electrical signal from the pressure sensor to the enhancement module.

[0061] In this embodiment, the first electronic pipeline can be connected to the pressure sensor and the enhancement module to transmit the electrical signal from the pressure sensor to the enhancement module, thereby realizing the rapid transmission of the electrical signal and providing the necessary connection for the enhancement and conversion of the electrical signal in subsequent processing links, so as to ensure that the dispatching command center can receive and analyze the rock formation pressure data in real time and make prompts in time, thereby effectively ensuring the safety of mining.

[0062] Optionally, the first electronic pipeline should have good signal transmission performance and anti-interference ability to ensure transmission stability and accuracy. The first electronic pipeline can use a shielded cable or optical fiber pipeline to reduce noise and distortion in signal transmission. This is only an example and is not specifically limited here.

[0063] As an optional implementation, the device further includes: a dispatching command center connected to the analog-to-digital converter and the alarm module, and configured to determine a magnitude relationship between the digital signal and the digital signal threshold.

[0064] In this embodiment, the dispatching and command center is connected to an analog-to-digital converter and can receive digital signals from rock formation monitoring points. The dispatching and command center analyzes the received digital signals in real time and compares them with digital signal thresholds. These digital signals are converted into electrical signals by pressure sensors based on rock formation stress, amplified by an enhancement module, and converted into digital format by the analog-to-digital converter. The digital signal threshold can represent the upper limit of rock formation stress. The setting of the digital signal threshold can be based on the mine's geological conditions, mining mode, rock formation characteristics, and other safety standards and regulations.

[0065] Optionally, the dispatch and command center is connected to an alarm module, which can be activated when rock formation stress exceeds a safe range. The alarm module can provide visual alarms (such as red light-emitting diode (LED) strips), auditory alarms (such as sirens), and other communication methods (such as text messages or phone calls) to quickly notify on-site personnel. It should be noted that the alarm methods used in the alarm module are provided for illustrative purposes only and are not intended to be limiting.

[0066] As an optional embodiment, the device also includes: a second electronic pipeline, connected to the alarm module and the dispatch command center, for sending a generation instruction corresponding to a digital signal greater than a digital signal threshold, wherein the generation instruction is used to trigger the alarm module to generate prompt information.

[0067] In this embodiment, a second electronic pipeline connects the alarm module and the dispatch command center, and can send a generation instruction corresponding to a digital signal exceeding a digital signal threshold, thereby triggering the alarm module to generate a prompt message. This ensures that when the monitored digital signal exceeds the digital signal threshold, the dispatch command center can immediately send an instruction to the alarm module.

[0068] Optionally, the selection and design of the second electronic pipeline needs to consider reliability in harsh environments, such as waterproof, dustproof, anti-interference and other characteristics, to ensure the stability of command transmission in the complex environment of mining.

[0069] As an optional implementation, the alarm module is a light strip alarm module, and the prompt information is a red light strip prompt information, wherein the light strip alarm module is used to respond to the generation instruction and generate the red light strip prompt information.

[0070] In this embodiment, the alarm module may be a light strip alarm module, and the prompt information may be red light strip prompt information, wherein the light strip alarm module may be used to generate red light strip prompt information in response to a generation instruction.

[0071] Optionally, when the internal pressure of the rock formation is greater than the digital signal threshold, the alarm module can issue a red light strip prompt message according to the generation instruction corresponding to the digital signal being greater than the digital signal threshold, reminding on-site staff to take safety measures.

[0072] As an optional embodiment, the device is deployed in an empty tunnel in a mine.

[0073] In this embodiment, the device can be deployed in an empty tunnel in a mine. Empty tunnels are formed during mining operations. The stability of the overlying rock strata is directly related to the safety of mining operations. Deploying the device in an empty tunnel can more directly and accurately measure stress changes within the rock strata, providing real-time, accurate data support for rock strata stability analysis.

[0074] Optionally, by deploying the device in an empty tunnel, when the rock stress exceeds the safe range, on-site workers can be notified and evacuated in time to avoid major safety accidents caused by rock collapse, effectively protect the lives of on-site workers, and improve the safety of mine mining.

[0075] The technical solutions of the embodiments of the present utility model are illustrated below with reference to preferred implementation methods.

[0076] Coal rock stress refers to the basic parameter for preventing coal rock dynamic disasters during coal mining. Coal rock dynamic disasters refer to sudden geological disasters caused by the sudden release of stress within the coal rock mass or the destruction of the rock structure during coal mining. Such disasters are usually closely related to the geological conditions, mining methods, and mining depth of the coal mine. Real-time monitoring of coal rock stress is very important for solving the problem of sudden collapse of the roof of the bench rock layer or the goaf area in the coal seam due to 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 stress. In addition, the upper operating electric shovel and transport truck have a large deadweight, which will increase the risk of collapse and damage to the rock layer above the goaf.

[0077] Currently, rock formation stress is detected by establishing slope monitoring stations. However, these stations, while reflecting only changes in rock formation stability through changes in slope displacement, cannot detect changes in rock formation pressure in a timely manner. Monitoring points, located on the slope surface, cannot truly reflect pressure changes within the rock formation. Monitoring stations rely solely on wired transmission, which has limited transmission distances and is significantly affected by the environment, posing safety risks. Consequently, the technical problem of low accuracy in detecting rock formation stress in mines persists.

[0078] However, an embodiment of the present invention proposes a device for monitoring the stress of open-pit mine steps and issuing early warnings, which can monitor the stress inside the surrounding rock on the roof of the goaf. The strain can be connected with a pressure sensor and an acoustic emission observer to understand the rock fracture situation and location in the rock body in advance, thereby achieving the purpose of timely issuing warning information to the personnel working in the mine before collapse, thereby achieving the technical effect of effectively prompting the stress of the rock strata in the mine, and solving the technical problem of being unable to effectively prompt the stress of the rock strata in the mine.

[0079] Figure 2Schematic diagram of a device for monitoring open pit bench stress and providing early warning according to an embodiment of the present invention. Figure 2 As shown, the device for monitoring open-pit mine step stress and issuing early warnings 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.

[0080] The pressure gauge 201 can be used to display the real-time pressure inside the device, making it easier for on-site staff to monitor the status of the device.

[0081] The oil filling hole 202 can be used to inject hydraulic oil into the hydraulic oil box before the device is installed, and to replenish oil or adjust the pressure during the use of the device. The oil filling hole can be used to remove air inside the device to ensure accurate transmission of the pressure signal.

[0082] 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 measurement accuracy and stability.

[0083] 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 the pressure change will be transmitted to the pressure sensor.

[0084] 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 .

[0085] The stainless steel high-pressure oil pipe 206 connects the hydraulic oil box and the cylindrical force transmission housing to achieve stable transmission of hydraulic oil. The high-pressure oil pipe must be able to withstand the high pressure inside the rock formation and the hydraulic pressure during operation of the device.

[0086] The external electronic pipeline 207 can be used to connect the pressure sensor with ground signal processing equipment, transmit the electrical signal generated by the pressure sensor, and realize remote monitoring and analysis of data.

[0087] 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.

[0088] The device can also be equipped with an additional alarm device. When the internal pressure of the rock formation is greater than the warning threshold, the alarm device will send a warning signal to remind on-site personnel to take safety measures.

[0089] In the embodiment of the present utility model, through the coordinated action of the pressure gauge 201, the oil filling hole 202, the cylindrical force transmission housing 203, the hydraulic oil box 204, the three-way oil valve 205, the stainless steel high-pressure oil pipe 206, the external electronic pipeline 207 and the pressure sensor 208, the device for monitoring the stress of the 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, which provides an effective means for monitoring the stability of the step rock formations in open-pit coal mines and issuing early warnings for the collapse of the goaf roof, ensuring long-term stable operation in a complex mining environment.

[0090] Figure 3 Schematic diagram of another device for monitoring open pit mine step stress and providing early warning according to an embodiment of the present invention. Figure 3 As shown, the device includes: a pressure signal detection module 301, an AD conversion module 302, an AT89C51 single-chip computer module 303, a value judgment module 304, a dispatching command center module 305 and an alarm module 306.

[0091] The pressure signal detection module 301 can detect the pressure signal corresponding to the open-pit mine step stress when the signal data is detected.

[0092] The AD conversion module 302 can perform AD conversion on the pressure signal detected by the pressure signal detection module 301 and convert the pressure signal into a digital signal through ADC. The converted digital signal can be processed and analyzed by a microprocessor or other digital devices.

[0093] The AT89C51 single-chip microcomputer module 303 can be used to 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] The numerical judgment module 304 can be equipped with an electronic pipeline to transmit the pressure data to the dispatching command center module 305 through the external pressure sensor and the electronic pipeline, so as to realize real-time monitoring of the pressure conditions above the goaf, so that the numerical judgment module 304 can determine whether the digital signal is higher than the upper limit.

[0095] The dispatching and commanding center module 305 can display the pressure value to determine whether the digital signal is higher than the upper limit.

[0096] The alarm module 306 can be used to sound an alarm through the alarm light strip 307 when the digital signal exceeds the upper limit. For example, an LED light strip can be buried along the edge of the tunnel on the steps above the empty tunnel. When the pressure of the rock and equipment above the empty tunnel exceeds the set pressure value, the LED light strip can display red to issue an early warning.

[0097] In an embodiment of the present utility model, the pressure signal detection module 301, the AD conversion module 302, the AT89C51 single-chip computer module 303, the numerical judgment module 304, the dispatching command center module 305 and the alarm module 306 work together to detect the pressure signal corresponding to the stress of the open-pit mine step, perform AD conversion on the detected pressure signal, and convert it into a digital signal. The digital signal is analyzed and processed by the AT89C51 single-chip computer 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 sounded through the alarm light strip, thereby achieving the technical effect of effectively prompting the rock stratum stress in the mine and solving the technical problem of being unable to effectively prompt the rock stratum stress in the mine.

[0098] The following is a further description using the above-mentioned device for monitoring step stress in an open-pit mine and providing early warning of rock pressure in the goaf as an example.

[0099] The device for monitoring the stress of open-pit mine steps and issuing early warnings can only monitor the vertical pressure in a single direction. Therefore, it can be installed horizontally in the rock layer of the vertical step. The monitoring range and drilling arrangement range can be determined according to the position of the empty tunnel, and the drilling depth can be determined according to the horizontal and vertical depth range of the empty tunnel.

[0100] Figure 4 This is a schematic diagram of a three-dimensional view of hole arrangement positions according to an embodiment of the present invention, as shown in FIG. Figure 4 As shown, the installation of boreholes needs to fully consider the density of measuring points in the vertical direction to be as uniform as possible. The horizontal arrangement distance of boreholes should be based on the width of the tunnel 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.

[0101] Figure 5 This is a schematic diagram of three views of hole arrangement positions according to an embodiment of the present invention, as shown in FIG. 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).

[0102] Figure 6 This is a schematic diagram of a side view of the relationship between hole layout positions and empty lane positions according to an embodiment of the present invention, as shown in FIG. Figure 6 As shown, the relationship between the lateral position of the borehole and the empty roadway (goaf) is clearly demonstrated. In open-pit coal mines or underground mines, this side view is essential for ensuring accurate measurement of the pressure of the rock strata above the goaf. 601 can represent the width of the empty roadway (warning distance), which is the width of the unsupported or unfilled empty area formed during the mining process. The specific value will vary depending on the geological conditions of the mine, the mining environment, and the operating requirements. 602 can represent the rock stratum, and 603 can represent the empty roadway.

[0103] Figure 7This is a schematic diagram of the front view of the relationship between the hole layout position and the empty lane position according to an embodiment of the present utility model, as shown in FIG. Figure 7 As shown, the relative positions of the drill hole and the empty roadway can be displayed from the direction perpendicular to the roadway.

[0104] Figure 8 This is a schematic diagram of an enlarged front view of the relationship between the hole layout position and the empty lane position according to an embodiment of the present invention, as shown in FIG. Figure 8 As shown, 801 can represent a stainless steel pipe. The magnified view of the relationship between the hole layout position and the empty tunnel position can more clearly show the relative position and details of the borehole and the empty tunnel in the vertical direction, which can ensure that the borehole is accurately installed at the planned position to accurately measure the internal pressure of the rock formation.

[0105] Figure 9 This 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, such as Figure 9 As shown, the arrangement of the boreholes and the specific placement of the monitoring devices can be displayed in detail, and the circles can indicate the locations of the boreholes.

[0106] In this embodiment, to monitor and provide real-time information on rock formation stress changes, an external pipeline is connected to a signal conversion device located below the pit. A sensor converts pressure into an electrical signal. After amplification and A / D conversion to a digital signal, the digital signal is analyzed and processed by a single-chip microcomputer. The processed results are transmitted to the dispatching and command center module, enabling real-time pressure value monitoring and trend analysis, while also determining whether the pressure exceeds an upper limit. If the pressure value exceeds the upper limit, a light strip embedded in the step illuminates an alarm. If the pressure value does not exceed the upper limit, the signal returns to the pressure signal monitoring module for a complete loop. The external pipeline serves as a critical link between the internal rock formation monitoring device and the surface signal processing equipment, enabling real-time monitoring and early warning of rock formation stress changes. The surface signal processing equipment can convert raw signals from deep within the mine into valuable information for mine safety management and decision-making, effectively improving the safety and efficiency of open-pit mining and enabling real-time monitoring and early warning of rock formation stress changes.

[0107] In the above embodiments of the present invention, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0108] 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 principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A device for indicating rock stress in a mine, characterized in that: include: Pressure sensors are used to convert rock stress inside the mine into electrical signals; an enhancement module, connected to the pressure sensor, and configured to output the enhanced electrical signal; an analog-to-digital converter, connected to the enhancement module, and configured to convert the enhanced electrical signal into a digital signal; An alarm module is connected to the analog-to-digital converter and is used to be triggered by the digital signal to generate a prompt message, wherein the prompt message is used to indicate that the rock formation stress does not meet the requirements for performing mining operations on the mine.

2. The prompting device according to claim 1, characterized in that: The device further comprises: A force-transmitting shell, configured to respond to the rock formation stress and generate deformation; A hydraulic oil box is connected to the force transmission housing and the pressure sensor, and is used to respond to the deformation and use the hydraulic oil in the hydraulic oil box to transmit the pressure signal corresponding to the rock formation stress to the pressure sensor.

3. The prompting device according to claim 2, characterized in that: The force transmission housing is cylindrical in shape.

4. The prompting device according to claim 2, characterized in that: The device further comprises: A pressure gauge is connected to the hydraulic oil box and is used to display the pressure signal.

5. The prompting device according to claim 2, characterized in that: The device further comprises: The oil filling hole is connected to the hydraulic oil box and is used to inject the hydraulic oil into the hydraulic oil box.

6. The prompting device according to claim 1, characterized in that: The device further comprises: A first electronic line is connected to the pressure sensor and the enhancement module, and is used to transmit the electrical signal from the pressure sensor to the enhancement module.

7. The prompting device according to claim 1, characterized in that: The device further comprises: The dispatching command center is connected to the analog-to-digital converter and the alarm module, and is used to determine the size relationship between the digital signal and the digital signal threshold.

8. The prompting device according to claim 7, characterized in that: The device further comprises: The second electronic pipeline is connected to the alarm module and the dispatch command center, and is used to send a generation instruction corresponding to the digital signal being greater than the digital signal threshold, wherein the generation instruction is used to trigger the alarm module to generate the prompt information.

9. The prompting device according to claim 8, characterized in that: The alarm module is a light strip alarm module, and the prompt information is red light strip prompt information, wherein the light strip alarm module is used to respond to the generation instruction and generate the red light strip prompt information.

10. The prompting device according to claim 1, characterized in that: The device is deployed in an empty tunnel in the mine.

Images