83 results about "Ground fissure" patented technology

The invention discloses a coal mining subsidence area surface crack intelligent extraction method based on an improved Transform model, and belongs to the technical field of remote sensing image processing. Firstly, an unmanned aerial vehicle carrying a high-resolution optical camera is used for collecting images, the image overlapping rate of 70%-80% is guaranteed, and a training data set is constructed through professional labeling, cutting screening and data enhancement. The encoder of the innovative model is very distinctive, and the adaptive multi-scale patch mapping layer can dynamically adjust the patch size according to the local complexity of the image and efficiently extract features; double-attention fusion is combined with optimization position coding, and long-distance dependency capture is enhanced; and the calculation amount and the overfitting are reduced by the dynamic sparse connection full-connection layer. Residual attention enhancement pyramid pooling and a space-channel attention bottleneck mechanism are adopted, key features are highlighted, and noise is suppressed; and a breakpoint detection and connection rule determination module is utilized to realize complete restoration of the ground fracture. After the data set is used for training a model, deployment is carried out, and through preprocessing, encoding and decoding and post-processing, ground fracture information can be accurately obtained, and a data foundation is built for mining area safety management and geological disaster prevention and control.

The invention relates to the technical field of earthquake monitoring, in particular to a geological disaster early warning device based on earthquake waveform recognition, which comprises an earthquake data receiving module, an earthquake wave type analysis module, a disaster mode recognition module, an early warning signal construction module, a risk judgment module and an early warning information issuing module. According to the invention, through identifying and analyzing the seismic waveform data, the characteristics of the earthquake and the type of the caused disaster, such as landslide, rock collapse, debris flow, ground fissure, surface collapse and the like, are rapidly judged, and through comprehensively evaluating the emergency and the influence range of the earthquake event, the targeted early warning information is generated and issued in time. The geological disaster response speed and efficiency can be remarkably improved, earthquake monitoring is not limited to recording of earthquake activities, disaster risks can be evaluated in real time, more accurate disaster prediction and early warning can be provided, for areas where geological disasters frequently occur, the early warning accuracy and timeliness can be remarkably improved, casualties and property losses can be reduced, and the economic benefit is improved. And the method has extremely high practical value and social significance.

The invention discloses an unmanned aerial vehicle and robot dog cooperative inspection system, and relates to the technical field of unmanned aerial vehicles, the unmanned aerial vehicle and robot dog cooperative inspection system comprises an unmanned aerial vehicle inspection module, a robot dog inspection module and a cooperative control module, the unmanned aerial vehicle inspection module is used for aerial aerial view of large-scale crowds, and real-time calculation of crowd density, velocity field and congestion hotspots; the robot dog inspection module is used for carrying out close inspection in a ground crack corridor, detecting gait stability and falling individuals in real time, forming a soft boundary to carry out differential diversion guidance and carrying out physical intervention on dangerous situations, and carrying out real-time inspection on the ground crack corridor. The cooperative control module is used for integrating the aerial view angle of the unmanned aerial vehicle and the ground detection information of the robot dog, dynamically updating a routing inspection path and triggering sound-light alarm and linkage guidance when a risk is identified, so that air-ground integrated risk prevention and control are realized, the unmanned aerial vehicle routing inspection module comprises a visual perception unit, and the unmanned aerial vehicle routing inspection system has the characteristic of near execution.

A deformation monitoring device for geological landslide relates to the technical field of natural disaster monitoring and early warning, and comprises two monitoring pier bodies, a pull rope, a fixed seat, a support, a stay wire mechanism and an energy storage mechanism, the two monitoring pier bodies are correspondingly arranged on two sides of a ground crack, the pull rope is arranged between the two monitoring pier bodies in a tightened state, and the fixed seat is arranged on the support. The number of the fixing seat is one, the fixing seat is fixedly arranged between the two monitoring pier bodies in the front-back linear direction, the support is installed on the upper surface of the fixing seat, and the pull rope mechanism and the energy storage mechanism are arranged in the middle of the pull rope, so that the problem that the pull rope is interfered by external sundries is effectively solved; the motor drives the screw rod threaded block to reciprocate front and back, the wire hooking groove in the connecting plate pulls the pull rope to the edge of the support and loosens the pull rope, the check block of the energy storage mechanism blocks the rebounded pull rope to store energy, and when the threaded block drives the connecting plate to reset, the energy storage pull rope is released, and sundries are shaken off through resilience force.

The invention relates to the technical field of geological safety risk monitoring and early warning, and discloses a plain type city geological safety risk multi-disaster multi-parameter monitoring and early warning method, which comprises the following steps: S1, determining a plain type city geological safety risk type according to a plain type city geological survey result and a city geological safety risk survey evaluation result, comprising land subsidence, surface collapse, ground fissures and flood disasters, causes, dynamic characteristics and evaluation indexes of urban geological safety risks are analyzed, and a preliminary evaluation result is obtained; and S2, according to the preliminary evaluation result, through dynamic adjustment of an early warning threshold value and a multi-parameter early warning model, accumulation of long-time sequence monitoring data and clearness of a geological safety risk development trend, the precision of the monitoring early warning model can be improved, the research of a geological safety risk monitoring early warning system can be promoted, and the research efficiency can be improved. And the accuracy of monitoring and early warning of the plain type city geological safety risk is improved.

The invention discloses a ground surface settlement and ground fracture monitoring device and method based on distributed fiber sensing (DSS) and fiber bragg grating (FBG). The device comprises a GFRP composite material substrate which stretches across a ground fracture and is fixed on a stable stratum through an anchoring structure, a distributed sensing and temperature measuring optical cable which is pre-embedded in a groove of the substrate, an FBG displacement meter which is connected through a plug-and-play interface, a static force level gauge, an osmometer and other point type sensors, and the data processing unit has the functions of multi-source data acquisition, temperature compensation, data fusion and multistage early warning. According to the method, multi-parameter, distributed and high-precision monitoring of the ground fracture development state is achieved through the steps of field investigation, substrate installation, sensor deployment, system calibration, real-time monitoring and the like. The method has the advantages of high measurement precision, strong anti-interference capability, convenient installation, low cost, capability of predicting the crack propagation trend and the like, and is suitable for long-period safety monitoring of geological disaster frequent areas such as mining areas and landslide areas.

The invention discloses an unmanned aerial vehicle image ground fracture identification and extraction method based on machine learning, and relates to the technical field of ground fracture identification. A monitoring range is acquired, and a monitoring model is constructed corresponding to the monitoring range; marking identification information corresponding to the monitoring range, marking the identification information in the monitoring model, and establishing an association relationship between the monitoring model and the monitoring range; acquiring an image in the monitoring range based on the unmanned aerial vehicle, positioning the image based on the identification information, and identifying a graph in the image to obtain a crack graph; and constructing the crack graph in the monitoring model based on machine learning to obtain a geographic model. According to the method, information such as the size of the crack can be determined according to identification of the geographic shape features, the ground crack can be extracted finally, and a good ground crack extraction effect is achieved.

The invention provides an earth surface deformation evolution numerical simulation method based on near-field dynamics, which comprises the following steps: dispersing a geologic body model and a virtual boundary layer which need to be calculated into a plurality of material points to obtain an initial geologic body model; acquiring a neighborhood of each substance point in the initial geologic body model; based on the pore water pressure change of the substance point at the current time step, acquiring the internal force of the substance point at the current time step as the stress of the substance point at the current time step; based on the stress of the substance point at the current time step, obtaining the displacement of the substance point at the current time step by using an adaptive dynamic relaxation method; based on the displacement of the substance point in the current time step, obtaining the stress of the substance point in the current time step; and based on the stress of the substance point at the current time step, judging the fracture condition of the virtual key by utilizing a Mohr-Coulomb failure criterion, and obtaining a local damage value of the substance point at the current time step. The invention provides another scheme capable of revealing a physical mechanism that ground subsidence disasters into ground fissures.

The utility model relates to a ground fissure width and settlement monitoring device which is characterized in that an adjusting arm is arranged on a supporting table, one end of the adjusting arm is installed on the supporting table through a gallows, the end, away from the supporting table, of the adjusting arm is installed on a measuring structure through a gallows, and a vertical distance measuring rod used for fissure depth measurement is installed at the center of an installation block in a sliding mode; one end, close to the crack, of the vertical distance measuring rod is provided with a measuring head, the two adjusting arms are provided with extension heads, the extension heads are installed on a limiting frame, and the limiting frame enables the inclination angles of the two adjusting arms to be the same in the placing process of the device, so that the positioning head can be placed at the crack when the device is placed, and the positioning head is in contact with the crack; it can be guaranteed that the measuring head makes contact with the two edges of a crack in the measuring process, the situation that the measuring head inclines in the adjusting process of the device is avoided, the positioning head is preferentially placed in the installing process, the positioning head and the measuring head are the same in shape, the adjusting arm is controlled to enable the supporting table to be stably supported on the ground, and fixing of the device is achieved.

The invention discloses a mining area ground fracture monitoring method and device, electronic equipment and a storage medium, and relates to the technical field of image recognition, and the method comprises the steps: obtaining an original image of a mining area ground fracture, segmenting the original image based on a preset semantic segmentation model, and obtaining a ground fracture extraction result; a ground fracture skeleton is extracted from the ground fracture extraction result, and a ground fracture structure line graph is generated according to key points of the ground fracture skeleton; and connecting associated structure lines in the ground fracture structure line graph to obtain a ground fracture strike line. According to the method, the deep learning semantic segmentation model and the selective connection between the structural lines are adopted, so that the monitoring efficiency of the ground fissures in the mining area is improved, the precision and reliability of ground fissure monitoring are greatly improved, and effective technical support is provided for mine geological disaster investigation and ecological environment management.

The movable sanding device comprises a sanding cylinder, a sand discharging opening is formed in the bottom of the sanding cylinder, positioning seats are welded and fixed to the two ends of the outer side of the sanding cylinder, fixing rods are arranged on the positioning seats in a threaded connection mode, and meanwhile the ends, away from the positioning seats, of the fixing rods are welded and fixed to stress rods. Handles are mounted on the two sides of the stress rod; and an auger is movably mounted in the sanding cylinder. According to the movable sanding device for asphalt pavement maintenance, the handle is held by a hand, the sanding cylinder is obliquely pushed, the sand discharging opening is formed above a ground crack, a starting switch at the bottom of the stress rod is pressed, the driving motor drives the auger to rotate, sand in the sanding cylinder is discharged from the sand discharging opening and falls into the ground crack, and the whole device is small and exquisite in shape and convenient to use. Ground cracks at different positions on the road surface can be conveniently and rapidly filled and repaired; and the filling and repairing efficiency of the ground crack zone is improved.

The invention discloses a mining area ground fissure comprehensive measuring device which comprises a calibration frame, a ToF distance measuring sensor, a GPS positioner, an image taking probe and a host, and the sensor and the positioner are detachable parts; two fixing rods of the calibration frame are used for assembling and disassembling the components, and the surfaces of the fixing rods are provided with central points; end blocks are arranged at the two ends of the calibration frame, and supports are arranged at the bottoms of the end blocks; the image acquisition probe can automatically read the width of the crack, and the angle measuring instrument can directly read the reading of the included angle between the horizontal plane where the ground crack is located and the vertical direction; and the ToF distance measuring sensor and the image capturing probe are electrically connected with the crack comprehensive detector host respectively. According to the method, the depth, the opening distance, the dislocation height, the positioning and other information of the ground fracture can be obtained, and the method is of great significance to development of related research work of the fracture.

The invention discloses a ground fracture detection method based on remote sensing image visual analysis, which comprises the following steps of: sending a remote sensing image to a trained ground fracture dynamic monitoring model, outputting a fracture path by the ground fracture dynamic monitoring model, outputting a vector element graph layer containing a detected fracture position, and identifying a section of path identified as a fracture corresponding to each element, displaying through a GIS platform; the construction and training process of the ground fracture dynamic monitoring model comprises the following steps: S1, constructing the ground fracture dynamic monitoring model, and manually marking the accuracy of a detection result of a DOM image sample; s2, improving the recognition precision of the fine-line object target in the model structure; s3, optimizing the extraction efficiency of the interference features; s4, obtaining landform parameters of a to-be-monitored area, and introducing a high-speed interpretation image sample; and S5, obtaining a trained ground fracture dynamic monitoring model. The invention belongs to the technical field of geological image processing, and significantly improves the efficiency and accuracy of ground fracture recognition.

The invention belongs to the field of eolian sand area coal mine ecological restoration, and particularly relates to a restoration method for ground fissures caused by coal mining subsidence in an eolian sand area. Dividing the ground fissures into boundary ground fissures, middle ground fissures and tension ground fissures according to the development law of the ground fissures caused by coal mining subsidence in the aeolian sand area; according to the characteristic that boundary ground fissures are slightly pulled, the ground fissures can be filled to the maximum extent by adopting a repairing means of drilling a loose stratum before mining, mixing a mixture of dry fly ash and dry cement powder and injecting water for curing after mining; according to the characteristics of initial tension and later compression of the middle ground fissure, cementing slurry is injected when the stratum on one side collapses and is tensioned, and a uniform smearing effect is achieved after the stratum on the other side collapses, so that the middle ground fissure is filled to the maximum extent. And aeolian sand filling slurry is injected into the tensile ground fracture with the shallow development depth. According to the development law of the ground fissures caused by coal mining subsidence in the aeolian sand area, a targeted repairing means is adopted, and the repairing effect is good.

The invention discloses an active mountainous area coal mining ground fracture loss reduction method based on an isolation ditch, and the method comprises the steps: firstly building an initial numerical model, obtaining an initial surface subsidence curve, and determining a ground fracture intense development position; establishing a numerical model in the presence of the ground fracture, obtaining a surface subsidence curve in the presence of the ground fracture, and researching the influence of the ground fracture on the initial surface subsidence curve; establishing a numerical model in the presence of a plurality of isolation ditches, and researching the influence of the isolation ditches with different parameters on the surface subsidence curve in the presence of the ground fissures to obtain parameters for achieving a satisfactory isolation effect of the isolation ditches; and finally, carrying out site construction according to the parameters for achieving the satisfactory isolation effect of the isolation ditch. According to the method, the strong development position of the ground fracture is pre-judged in advance through numerical calculation, the isolation ditch is actively arranged in advance, and a ground surface deformation damage transmission path caused by underground coal seam mining is blocked in advance.

The utility model relates to the technical field of geological exploration, in particular to a ground fissure measuring device which comprises two bases arranged at intervals, stand columns are fixedly installed on the top faces of the bases, a plurality of evenly-distributed fixing cones are fixedly installed on the bottom faces of the bases, and a connecting plate is fixedly installed between the top ends of the two stand columns. A measuring mechanism is arranged between the two stand columns, the measuring mechanism comprises a mounting assembly, the two ends of the mounting assembly slide on the two stand columns in a penetrating mode respectively, and a height adjusting mechanism is arranged between the mounting assembly and the connecting plate; a width measuring assembly is slidably mounted in the mounting assembly in a damping manner, and a depth measuring assembly is fixedly mounted in the middle of one side of the width measuring assembly; according to the width measuring assembly, the initial distance between two abutting plates is effectively reduced through the arrangement of a bidirectional lead screw and a mounting base, compared with the prior art, the adaptability to the width size of the crack is improved to a certain degree, and good use flexibility is achieved.

The invention relates to the technical field of image segmentation, in particular to a coal mine area ground fracture identification method and device. The method comprises the following steps: acquiring a visible light remote sensing image and a thermal infrared remote sensing image of a target coal mine area; constructing a ground fracture data set based on the visible light remote sensing image and the thermal infrared remote sensing image; a ground fracture recognition model is constructed based on the neural network, the ground fracture recognition model comprises a double-branch encoder, a feature extraction module and a decoder, and the double-branch encoder comprises a feature fusion module; iteratively training the ground fracture recognition model according to the ground fracture data set; and performing ground fracture identification on the visible light remote sensing image to be detected and the thermal infrared remote sensing image to be detected of the target coal mine area by using the trained ground fracture identification model to obtain a ground fracture identification result map. According to the method and the device, the visible light and thermal infrared bimodal data are fused, so that accurate identification of the ground fissures is realized in a complex scene of a coal mine area.

The invention discloses a working face staggered layout method, product and equipment for coal mining ground fissures, and belongs to the technical field of mining subsidence and ecological restoration. The method comprises the steps that S1, the overall layout mode of upper and lower coal seam working faces is determined; s2, determining core mining parameters of the working face; s3, determining an external error distance or an internal error distance through numerical simulation; s4, acquiring surface subsidence data and verifying the surface subsidence data; and S5, determining the mining sequence of the upper coal seam working face and the lower coal seam working face according to the layout mode, and designing a whole-process production system to realize the landing of a production scheme. According to the method, the goal of weakening coal mining ground fissure development from the source is achieved by reasonably arranging the working faces of the upper and lower coal seams and adjusting the staggered distance of the working faces of the upper and lower coal seams without abandoning coal pillar resources and increasing the roadway tunneling cost, the ground fissure development degree can be weakened from the source, and the coal mining efficiency is improved. The problems of multiple procedures, long period, poor effect and the like of a traditional method are solved.

The application discloses a model experiment house foundation deformation loading method based on ground fissure morphological change, collects information related to the model experiment, calculates the geometric similarity ratio and the kinematic similarity ratio of the model experiment, investigates the ground fissure at the house position in the field, determines the spatial overlapping relationship and the fissure morphological change stage, determines the initial position of the platform support column and the moving loading mode in combination with the fissure morphological change and the spatial overlapping relationship, and calculates the loading time and the loading rate of the model house foundation deformation. The spatial overlapping relationship between the fissure and the house is comprehensively considered, the simulation experiment result precision of the house deformation damage under the ground fissure is higher, the platform support column moving loading mode is scientifically and comprehensively reflected, and a solid foundation is laid for the subsequent development of the house foundation deformation loading experiment.

The application relates to the technical field of image segmentation, in particular to a coal mine area ground fissure identification method and device.The method comprises the following steps: acquiring a visible light remote sensing image and a thermal infrared remote sensing image of a target coal mine area; constructing a ground fissure data set based on the visible light remote sensing image and the thermal infrared remote sensing image; constructing a ground fissure identification model based on a neural network, wherein the ground fissure identification model comprises a double-branch encoder, a feature extraction module and a decoder, and the double-branch encoder comprises a feature fusion module; iteratively training the ground fissure identification model according to the ground fissure data set; and identifying ground fissures in the to-be-detected visible light remote sensing image and the to-be-detected thermal infrared remote sensing image of the target coal mine area by using the trained ground fissure identification model to obtain a ground fissure identification result map.The application realizes accurate identification of ground fissures in a complex scene of a coal mine area by fusing visible light and thermal infrared dual-mode data.

The invention discloses a ground subsidence and ground fracture optical fiber sensor and an installation method, and the method comprises the following steps: S1, drilling and optical fiber position determination: determining the position of an optical fiber grating in the optical fiber sensor according to a drilled rock core, and determining the proportion of pouring cement according to the components of the rock core; s2, processing the sensing optical fiber: roughening the surface of the sensing optical fiber, and arranging annular cards with openings on the sensing optical fiber at certain intervals; s3, mounting rods and balancing weights, wherein the balancing weights are arranged at the top ends of the mounting rods; s4, an unlocking device is adopted, specifically, in the cement pouring process, the balancing weight is unlocked through the unlocking device; and S5, lowering the sensing optical fiber and pouring cement: according to the mounting condition of the sensing optical fiber, fixing the top end of the sensing optical fiber on a balancing weight or performing arc bending, lowering the sensing optical fiber through a mounting rod, then connecting the mounting rod step by step, injecting cement with different parameters according to the acquired parameters of the rock core, and lifting the mounting rod upwards in the injection process.

The invention discloses a ground fracture detection method, which comprises the following steps of moving a detection device along the ground at a constant speed to obtain deflection states of two transverse conductors, and judging the specific position of a to-be-detected object according to the deflection states of the two transverse conductors. Due to the fact that magnetic resistance can be generated due to the difference of magnetic permeability of various substances, the phenomenon of magnetic overflow or convergence is generated on the earth surface, and existence and distribution conditions of the ground fissures are determined by detecting geomagnetic anomalies. The abnormality is found by testing the change of induced electromotive force voltage generated when a conductor cuts a magnetic line of force.

The application discloses a kind of coal mining ecological diving protection methods using nano bubble, comprising the following steps: step one: using water-conducting fracture zone prediction method, the development height H of water-conducting fracture zone is predicted;Step two: calculate the development depth h of surface ground fissure;Step three: determine the influence type of coal mining on groundwater, including groundwater rising type, groundwater descending type, groundwater disappearance type;Step four: according to the judgment result of step three, corresponding nano bubble technology is taken for different influence types;Step five: after coal mining adjacent working face, repeat step one to step four, until groundwater aquifer artificial or natural repair stops above steps, realize coal mining ecological environment protection.The application has wider application range, can make full use of atmospheric precipitation, reduce artificial irrigation, environment is relatively friendly, and can also reduce the additional labor intensity of underground special mining operation.

The utility model provides a pavement crack pouring device, which relates to the technical field of pavement crack pouring and comprises a support, a grip arranged on one side of the support, a storage tank arranged on one side of the support, a liquid gas storage tank arranged on one side of the support, and a pouring pipe arranged on one side of the storage tank. Universal wheels are fixedly connected to the four corners of the bottom of the support, a cleaning device is arranged on one side of the support and comprises a mounting block, the mounting block is fixedly connected with the support, a bolt is inserted into the mounting block in a threaded mode, and a containing frame is connected to the surface of the bolt in a threaded mode. According to the ground crack cleaning device, sundries in ground cracks can be cleaned by using the cleaning device, so that asphalt in the filling pipe can be better filled into the ground cracks, and the situation that combination of the asphalt and the ground cracks is affected by the sundries is avoided; therefore, the filling effect of the filling device can be improved.

The invention provides an automatic ground crack monitoring method and electronic equipment, and the method comprises the steps: controlling an unmanned plane to execute aerial photography according to a surrounding flight path of a to-be-confirmed region, obtaining a plurality of aerial photography images, determining a plurality of initial recognition frames, initial confidence, a plurality of crack feature blocks and a plurality of convolution feature vectors based on a target detection model, and obtaining a plurality of initial recognition frames, initial confidence, crack feature blocks and convolution feature vectors; determining the weight information of each initial recognition frame according to the plurality of initial recognition frames, the initial confidence, the plurality of crack feature blocks and the plurality of convolution feature vectors, determining the target confidence of each initial recognition frame in the to-be-confirmed area according to the initial confidence and the weight information of each initial recognition frame corresponding to each aerial image, and determining the target confidence of each initial recognition frame in the to-be-confirmed area according to the target confidence. And according to the target confidence of each initial identification frame in each to-be-confirmed area and a preset confidence threshold, generating a ground fracture monitoring result of the to-be-confirmed area. According to the invention, through the unmanned aerial vehicle surrounding aerial photography and the combination of the initial confidence and the weight information, an accurate ground fracture monitoring result is obtained.

The present invention relates to the technical field of tunnel engineering, and provides a method and a system for tunnel settlement and uplift across a ground fissure. The method includes: based on a numerical modeling system, establishing an initial tunnel model representing the tunnel with settlement, simulating the tunnel settlement process across the ground fissure according to the initial tunnel model, and simulating the tunnel uplift construction to determine the actual uplift construction plan; carrying out on-site construction and monitoring according to the actual uplift construction plan, including: arranging sensors on the tunnel and the deformation joints, constructing a digital twin model for monitoring the changes of the tunnel and the deformation joints during on-site construction; implementing grouting reinforcement and uplift of the tunnel by using the actual uplift construction plan. The present invention effectively controls tunnel settlement by grouting and reinforcing the ground fissure and the surrounding soil, improving the soil strength and integrity, inhibiting the activity of the ground fissure, and actively uplifting the tunnel structure by using the expansion force of the grouting body.

The utility model relates to the technical field of geological exploration, in particular to a mining area ground fracture measuring device which comprises a bottom plate. The device further comprises a sliding strip and a depth measuring assembly, the outer portion of the bottom plate is fixedly connected with a fixing nail used for fixing, and the top of the bottom plate is fixedly connected with the sliding strip. After a pressing block is pressed, the pressing block drives a sliding rod to slide in a baffle and pushes a pushing plate to move, a connecting plate is driven by an inclined groove of a limiting block to compress a second spring, and the limiting block is made to be separated from an infinite limiting wheel to relieve limitation; when a straight bar is pushed, a gear II in a mounting box II moves along a toothed plate I to drive the toothed plate II to slide in the mounting box I, so that a test plate on the toothed plate II is close to or far away from each other, and light irradiated to the test plate by a laser ranging device is changed; and after the pressing block is loosened, the spring I pushes the sliding rod to reset, and the spring II pushes the limiting block to relimit the movement distance of the stepless limiting wheel and the fixed test plate, so that the crack width measurement is quickly completed.

This utility model discloses a ground fissure monitoring device, belonging to the technical field of geological exploration equipment. The device includes a first anchor rod, a second anchor rod, a measuring instrument, and a measuring rope. The measuring instrument has a measuring slide, a length measuring scale, a first opening, and a second opening extending into the measuring slide on its outer wall. A measuring slider slides within the measuring slide, and the measuring slider contains a damping element. A measuring pointer is mounted on the measuring slider, extending from the first opening and pointing towards the length measuring scale. The measuring instrument can be fixed to the second anchor rod. One end of the measuring rope connects to the first anchor rod, and the other end passes through the second opening into the measuring slide and connects to the measuring slider. The second anchor rod has a first guide wheel and a second guide wheel, and the measuring instrument has a third guide wheel and a fourth guide wheel. According to this design, geological surveyors only need to periodically read the sliding distance of the measuring slider to directly obtain data on ground fissure changes.

The invention discloses a mountain area shallow coal seam mining ground fracture development position prediction method. The method comprises the steps of mountain area ground surface horizontal movement deformation decomposition, mountain slope slippage horizontal movement solving, mountain area ground surface horizontal movement solving, mountain area ground surface horizontal deformation solving and ground fracture development position prediction. According to the method, the ground fracture development position is predicted by predicting the peak values of the ground surface horizontal movement and horizontal deformation by taking the mining subsidence theory as guidance and taking the horizontal movement and horizontal deformation as judgment indexes on the basis of the ground surface subsidence characteristics of mining of the shallow coal seam in the mountainous area and the high correlation between the ground fracture development position and the ground surface horizontal movement and horizontal deformation; the method changes the passive situation that the development position of the ground fracture is determined through a large amount of on-site actual measurement in the past, is simple and efficient in process, saves time and labor, is quick and accurate in prediction result, provides technical support for adopting a method for weakening the development of the ground fracture in advance, and has important practical significance for ecological restoration and environmental protection of the coal mining subsidence land in the mountainous area.