Mine roadway exploration method, system, equipment and medium

Abstract

The invention relates to a mine roadway exploration method, system and device and a medium, and the method comprises the steps: carrying out the exploration of a to-be-detected region of a mine through employing an equivalent antimagnetic flux transient electromagnetic method, and obtaining an abnormal resistivity distribution condition; using a high-density resistivity method to determine the profile resistivity distribution condition based on the abnormal resistivity distribution condition; based on the abnormal resistivity distribution condition and the profile resistivity distribution condition, determining the position of an initially measured roadway; verifying the position of the primarily measured roadway to obtain the position of a target roadway; and performing drilling scanning on the target roadway position to obtain target survey information. The problems that in the prior art, the roadway position determined by directly surveying the ground surface environment of a roadway with complex physical property characteristics is large in error, the difficulty of source treatment is large, and the efficiency is low are solved.

Description

Background Art

[0002] With the reform of the national economic structure and the demand for the construction of an ecological civilization society, a large number of mines have been closed, resulting in a large number of abandoned mines. According to statistics, there are 23,303 abandoned mines in the middle reaches of the Yangtze River Basin alone. Abandoned mines such as pyrite mines and coal mines have produced a large amount of underground acidic wastewater, which is converted into surface water at the exit of tunnels, exits of horizontal shafts or shafts and discharged into rivers or drinking water sources. The water quality poses a great threat to the surrounding environment and human health in the basin. Source control is an effective prevention and control method for such mines, and the key point of source control is to identify underground acid water runoff tunnels. In the prior art, the surface environment of abandoned mines is often directly surveyed to determine the location of underground tunnels.

[0003] However, due to the long-term changes in the natural environment of the abandoned mine tunnels, there will be more or less collapse pits on the surface of the tunnel top, which will cause rainfall to directly flow in and form old kiln water, making the physical characteristics of the tunnel more complicated. The tunnel position determined by directly surveying the surface environment in the existing technology often has large errors, which makes source control more difficult and inefficient. Summary of the invention

[0004] In order to overcome the problem in the prior art that the tunnel position determined by directly surveying the surface environment of a tunnel with relatively complex physical properties often has large errors, resulting in greater difficulty and lower efficiency in source control, the present application provides a mine tunnel exploration method, system, equipment and medium.

[0005] In the first aspect, in order to solve the above technical problems, the present application provides a mine tunnel exploration method, comprising:

[0006] Use the equivalent reverse flux transient electromagnetic method to explore the area to be explored in the mine and obtain the abnormal resistivity distribution;

[0007] Using the high-density resistivity method, the profile resistivity distribution is determined based on the abnormal resistivity distribution;

[0008] Determine the location of the initial survey tunnel based on the abnormal resistivity distribution and the profile resistivity distribution;

[0009] Verify the initial measured lane position and obtain the target lane position;

[0010] Drill and scan the target tunnel location to obtain target survey information.

[0011] In a second aspect, the present application also provides a mine tunnel exploration system, comprising:

[0012] The first acquisition module is used to explore the area to be detected in the mine using the equivalent reverse flux transient electromagnetic method to obtain the abnormal resistivity distribution;

[0013] The second acquisition module is used to determine the profile resistivity distribution based on the abnormal resistivity distribution by using the high-density resistivity method;

[0014] A determination module is used to determine the location of the initial measured tunnel based on the abnormal resistivity distribution and the profile resistivity distribution;

[0015] A verification module is used to verify the initial measured lane position and obtain the target lane position;

[0016] The module is used to perform drilling scanning on the target tunnel position to obtain target survey information.

[0017] In a third aspect, the present application also provides a computing device, including a memory, a processor, and a program stored in the memory and running on the processor, and when the processor executes the program, the steps of a mine tunnel exploration method as described above are implemented.

[0018] In a fourth aspect, the present application also provides a computer-readable storage medium, in which instructions are stored. When the instructions are executed on a terminal device, the terminal device executes the steps of a mine tunnel exploration method.

[0019] The beneficial effects of the present application are: by using the equivalent reverse flux transient electromagnetic method and the high-density resistivity method to obtain the abnormal resistivity distribution and profile resistivity distribution of the area to be detected in the mine, it is possible to understand the resistance characteristics of the tunnels with relatively complex physical characteristics that may exist in the area to be detected, so as to preliminarily determine the possible initial measurement tunnel position directly based on the two distribution conditions. Then the initial measurement tunnel position is verified to obtain the target tunnel position that meets the accuracy requirements, and the target tunnel position is accurately drilled and scanned to obtain the target survey information near the tunnel. In this way, the position of the tunnel with relatively complex physical characteristics in the area to be detected is repeatedly determined and verified by a variety of methods, and the accurate exploration of the tunnel is achieved, which can improve the accuracy of the target tunnel position obtained, reduce the workload of drilling scanning, and thus shorten the time spent on obtaining accurate target survey information of the tunnel, so that the time for tunnel source treatment based on target survey information is shortened, thereby reducing the difficulty of tunnel source treatment and improving treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a process of a mine tunnel exploration method shown as an exemplary embodiment of the present application;

[0021] Figure 2A distribution map of geological conditions obtained by implementing a mine tunnel exploration method in an exemplary embodiment of the present application;

[0022] Figure 3 A regional distribution map of another geological situation obtained by implementing a mine tunnel exploration method in an exemplary embodiment of the present application;

[0023] Figure 4 This is a comparison diagram of the test results distribution of different apparent resistivity test devices;

[0024] Figure 5 This is a schematic diagram of a process flow of a mine tunnel exploration method provided in an exemplary embodiment of the present application;

[0025] Figure 6 A schematic structural diagram of a mine tunnel exploration system is shown as an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0026] Due to the long-term changes in the natural environment of abandoned mines, the lithology and physical parameters of the local strata of the mines have changed, making the physical characteristics of the tunnels of abandoned mines more complicated. According to the strong electrical differences in the lithology of different strata, combined with the hydrogeological structure characteristics in the area, the lithology and physical parameters of the local strata are sorted out. The metamorphic rock group is fragmented and incomplete due to the destruction of later granite and gabbro diabase. The main lithology is graphite-bearing biotite plagioclase gneiss, with a relatively high resistivity of more than 800 ohm-meters; the Quaternary residual slope accumulation layer is mainly distributed in the valley, mainly composed of gravel soil, and the resistivity is often between 50 and 100 ohm-meters; the granite is mainly biotite granite and pegmatite veins, with strong high resistance characteristics, and the resistivity can reach more than 1000 ohm-meters. The resistivity decreases in the structural fracture area. Previous detection results show that the resistivity can drop to about 200 ohm-meters. At the same time, the resistivity of slag is often less than 50 ohm-meters due to the presence of water-containing metal ore or high-conductivity moisture. At the same time, affected by the filling type, the tunnel can show completely different physical properties. The unfilled tunnel is affected by high-resistance and low-speed air and shows strong high-resistance and low-velocity anomaly characteristics, while the water-filled and mud-filled tunnels show low-resistance and low-velocity anomalies. The chemical test results of the contaminated water show that it has strong conductivity. The contaminated water filling will greatly transform the electrical characteristics of the tunnel. Therefore, abandoned mines often have obvious physical anomaly characteristics, and various anomalies will provide references for the interpretation of geophysical exploration data.

[0027] Based on this, this application uses the equivalent reverse flux transient electromagnetic method, high-density resistivity method, micro-motion exploration method, charging method and drilling to scan the abandoned mine tunnels using geological radar, which can identify the exact location of abandoned tunnels (2m wide × 2m high) with a buried depth of less than 150m, and can also find out the tunnel survey information including the development of cracks in the tunnel and its surroundings, and the underground acid water runoff path and the bottom boundary of the hydrogeological conditions. Based on the tunnel location and survey information obtained in this application, a hydrogeological conceptual model can be established to improve the feasibility of source control of underground acid wastewater, and establish a technical method system that can be used for reference for the accurate identification of hydrogeological conditions and ecological restoration of abandoned mines, so as to reduce the difficulty of source control and improve the efficiency of source control.

[0028] The following examples are provided to further explain and supplement the present application and do not constitute any limitation to the present application.

[0029] A mine tunnel exploration method, system, equipment and medium according to an embodiment of the present application are described below in conjunction with the accompanying drawings.

[0030] A mine tunnel exploration method in an embodiment of the present application is applied to a terminal device. In the present application scheme, the terminal device is used as the execution subject to illustrate the present application scheme. The terminal device is used to execute the steps of a mine tunnel exploration method.

[0031] See also Figure 1 , Figure 1 A mine tunnel exploration method is shown as an exemplary embodiment of the present application, such as Figure 1 As shown, the present application provides a mine tunnel exploration method, comprising:

[0032] Step S11, using the equivalent reverse flux transient electromagnetic method to explore the area to be detected in the mine to obtain the abnormal resistivity distribution;

[0033] Step S12, using a high-density resistivity method to determine the profile resistivity distribution based on the abnormal resistivity distribution;

[0034] Step S13, determining the location of the initial measured tunnel based on the abnormal resistivity distribution and the profile resistivity distribution;

[0035] Step S14, verifying the initially measured lane position to obtain the target lane position;

[0036] Step S15, drilling and scanning the target tunnel position to obtain target survey information.

[0037] A mine tunnel exploration method of this embodiment obtains the abnormal resistivity distribution and profile resistivity distribution of the mine's to-be-detected area through the equivalent reverse flux transient electromagnetic method and the high-density resistivity method, and can understand the resistance characteristics of the tunnels with relatively complex physical characteristics that may exist in the to-be-detected area, thereby directly determining the possible initial measurement tunnel location based on the two distribution conditions. Then, the initial measurement tunnel location is verified to obtain the target tunnel location that meets the accuracy requirements, and the target tunnel location is accurately drilled and scanned to obtain the target survey information near the tunnel. In this way, the location of the tunnel with relatively complex physical characteristics in the to-be-detected area is repeatedly determined and verified in a variety of ways to achieve accurate exploration of the tunnel, which can improve the accuracy of the target tunnel location obtained, reduce the workload of drilling and scanning, and thus shorten the time required to obtain accurate target survey information of the tunnel, so that the time for tunnel source control based on the target survey information is shortened, thereby reducing the difficulty of tunnel source control and improving control efficiency.

[0038] In this embodiment, the transient electromagnetic method (TEM) is a time domain electromagnetic exploration method, which realizes the detection of underground geological bodies by receiving the changes in the secondary induction field. At present, the equivalent reverse flux transient electromagnetic method (OCTEM) has been developed for shallow detection. It is a new transient electromagnetic method for measuring the attenuation and diffusion of the transient electromagnetic field of equivalent reverse flux. The time-space distribution law of the electromagnetic field that generates equivalent reverse flux when the same two sets of coils are passed with reverse currents is used. Two sets of the same coils parallel and coaxial above and below are used as the transmitting source, and the pure secondary field coupled to the center of the earth is measured on the zero flux plane of the primary field synthesized by the double coil source. The dual coils transmit transient pulse electromagnetic field signals on the ground, and one set of coils is placed near the ground surface. At the moment when the transient pulse is powered off, the superimposed magnetic field near the ground surface is the largest. Therefore, under the same change time, the maximum surface of the induced eddy current is concentrated near the ground surface, and the magnetic field generated by the induced eddy current is the strongest. With the delay of the shutdown interval, the surface induced eddy current gradually decays and generates new eddy current maximum surfaces, which gradually spread toward the depth and edge away from the transmitting coil. This is the "smoke ring effect" of the transient electromagnetic method vividly described by MNNabighian.

[0039] The method of the present application is applicable to the tunnel exploration of abandoned metal mines with horizontal mining, non-metallic mines, and abandoned mines with underground wastewater outbursts. When the tunnel data is lost or the distribution location is unclear, the accuracy of exploring the tunnels more than 150m underground in the mine is higher. The area to be detected in the present application is based on the mining data and geological data collected from the mine, and hydrogeological surveys are carried out to determine the location and amount of water outlets, and then the areas where tunnels may exist are circled. At the same time, based on the mining data, geological data and hydrogeological survey results, geological information such as faults, ore veins, collected tunnels, water outlet mine caves, slag accumulation areas, etc. in the area to be detected can be obtained, and based on the geological information obtained, a map such as the faults, ore veins, collected tunnels, water outlet mine caves, and slag accumulation areas can be drawn. Figure 2 As shown and Figure 3 The geological distribution map of the area to be explored is shown in Figure 1. Figure 2 and Figure 3 The faults, veins, collecting tunnels, water outlet mines, and slag accumulation areas are displayed in different colors.

[0040] Optionally, the equivalent reverse flux transient electromagnetic method is used to explore the area to be detected in the mine to obtain the abnormal resistivity distribution, including:

[0041] Using the equivalent reverse flux transient electromagnetic method, the locations of multiple measuring points in the mine area to be detected are determined based on the preset distance requirements, and the apparent resistivity of each measuring point is obtained;

[0042] Based on the transient relaxation inversion method, multiple abnormal resistivities among multiple apparent resistivities are determined;

[0043] The distribution of multiple abnormal resistivities is obtained as the abnormal resistivity distribution of the area to be detected.

[0044] In this embodiment, the equivalent reverse flux transient electromagnetic method is used to determine the positions of multiple measuring points in the area to be detected in the mine based on the preset distance requirements, so as to achieve uniform survey of the area to be detected in the mine and obtain the apparent resistivity of each measuring point. Then, based on the transient relaxation inversion method, the abnormal situation between each apparent resistivity and its corresponding inversion result can be understood, and multiple abnormal resistivities among multiple apparent resistivities can be determined based on multiple abnormal situations. That is, when the abnormal situation is that there is an abnormality, the corresponding apparent resistivity is an abnormal resistivity. And the distribution of multiple abnormal resistivities is used as the abnormal resistivity distribution of the area to be detected, so as to facilitate the subsequent target survey information based on the abnormal resistivity distribution. Among them, the area composed of multiple abnormal resistivities is a low-resistance distribution area.

[0045] In this embodiment, when the electrical properties of underground rocks are unevenly distributed (there are two or more rocks or ores with different electrical conductivities) or the surface is undulating, if the resistivity is still obtained by the method and calculation formula for measuring the uniform horizontal earth resistivity, it is called apparent resistivity, represented by the symbol ρs, and the unit is the same as the resistivity, which is Ω·m. The equivalent reverse flux transient electromagnetic method is used to arrange the measuring points in a grid on the surface of the area to be detected in the mine according to the preset distance requirements. It is mainly used to obtain the electrical structure of the area to be detected, and a resistivity detection device is used at each measuring point to perform ground scanning detection to obtain the apparent resistivity, so as to assist in identifying the characteristics of the hydrogeology. Among them, the designed grid point spacing is 20m×30m. Affected by factors such as terrain and adjustment, there are certain fine-tunings in the actual measuring points, which are all within the design range, and the measuring points are evenly distributed as a whole. Figure 2 As shown, the distribution of the measurement points of the equivalent reverse flux transient electromagnetic method is shown by the distribution of the black square measurement points in the figure. The equivalent reverse flux transient electromagnetic method implemented in this application has high recognition accuracy for the geological electrical conditions above 250m underground.

[0046] Based on the apparent resistivity of each measuring point, the transient relaxation inversion method is used to invert multiple apparent resistivities, identify the abnormal resistivity and normal resistivity of the area to be detected, and take the distribution of linear abnormal belts and planar abnormal areas composed of multiple abnormal resistivities as the abnormal resistivity distribution of the area to be detected, forming an intuitive abnormal point plane distribution map, such as Figure 3 shown. Figure 3 In the figure, the yellow-red surface or linear patches are low-resistance distribution areas, and the blue patches are high-resistance distribution areas. The low-resistance distribution areas are caused by residual metal veins or underground mining areas, that is, the distribution of the low-resistance distribution areas is the abnormal resistivity distribution of the area to be detected.

[0047] in addition, Figure 3 The distribution of measurement points of the equivalent reverse flux transient electromagnetic method is also shown in the figure. At the same time, the distribution of measurement points of the high-density resistivity method, the distribution of measurement lines of the micro-seismic exploration method and the distribution of measurement lines of the charging method used in this application are all shown in the figure. Figure 2 and Figure 3 In the display, Figure 2 The distribution of anomaly points obtained by subsequent micro-seismic exploration and charging methods is also shown. Figure 2 and Figure 3 The various measuring lines and measuring points in the graph are displayed in different colors.

[0048] Optionally, based on the transient relaxation inversion method, multiple abnormal resistivities among the multiple apparent resistivities are determined, including:

[0049] The transient relaxation inversion method is used to invert multiple apparent resistivities to obtain multiple relative resistivities.

[0050] For each relative resistivity, obtaining the difference between the relative resistivity and the corresponding apparent resistivity;

[0051] When the absolute value of the difference is greater than the preset abnormal value, the corresponding apparent resistivity is taken as the abnormal resistivity.

[0052] In this embodiment, a plurality of apparent resistivities are inverted using a transient relaxation inversion method to obtain a relative resistivity obtained after inversion of each apparent resistivity. For each relative resistivity, the difference between the relative resistivity and the corresponding apparent resistivity can reflect an abnormal situation. That is, when the absolute value of the difference is greater than a preset abnormal value, it indicates that the abnormal situation between the two is an abnormality. When the absolute value of the difference is greater than the preset abnormal value, the corresponding apparent resistivity is abnormal, and the apparent resistivity is used as an abnormal resistivity, so as to facilitate the subsequent abnormal resistivity distribution based on the abnormal resistivity, and obtain the target survey information based on the abnormal resistivity distribution.

[0053] In this embodiment, the transient relaxation inversion method is an inversion method suitable for the equivalent inverse flux transient electromagnetic method, which is derived from the formula according to the equivalent inverse flux theory. The transient relaxation inversion method is sensitive to karst and goaf, so it can invert the "relative resistivity" in the actual geological electrical conditions, that is, invert the "relative resistivity" corresponding to each apparent resistivity that is more in line with the actual geological electrical conditions. Since there is a certain difference between the relative resistivity and the corresponding apparent resistivity, it is possible to determine whether the apparent resistivity is abnormal based on the difference between the two, so as to realize the abnormal discrimination of the apparent resistivity, thereby obtaining the location distribution of the tunnels in the area to be detected with higher accuracy (abnormal resistivity distribution).

[0054] Optionally, the profile resistivity distribution is determined based on the abnormal resistivity distribution using a high-density resistivity method, including:

[0055] Based on the abnormal resistivity distribution, the abnormal area is divided;

[0056] Make large-angle intersections in abnormal areas to obtain high-density resistivity survey lines;

[0057] The vertical profile of the high-density resistivity survey line is surveyed using the high-density resistivity method to obtain multiple profile resistivities;

[0058] The distribution of multiple profile resistivities is obtained as the profile resistivity distribution of the area to be detected.

[0059] In this embodiment, based on the abnormal resistivity distribution, the abnormal area is divided and the abnormal area is intersected at a large angle to obtain a high-density resistivity survey line, which is a survey line with a high possibility of underground tunnels. The high-density resistivity method is used to survey the vertical profile of the high-density resistivity survey line to obtain multiple profile resistivities, and the distribution of the multiple profile resistivities is used as the profile resistivity distribution of the area to be detected, so as to facilitate the subsequent acquisition of target survey information based on the profile resistivity distribution.

[0060] In an exemplary embodiment, the intersections between different high-density resistivity lines are possible tunnel fractures, such as Figure 2 As shown, there may be tunnel cracks at the intersection of the high-density resistivity measuring line L2 and the high-density resistivity measuring line L6.

[0061] In this embodiment, for the abnormal area divided by the abnormal resistivity distribution obtained by the equivalent reverse flux transient electromagnetic method, the high-density resistivity method is used to intersect the abnormal area at a large angle to obtain a high-density resistivity survey line (such as Figure 2 As shown, the vertical profile of the high-density resistivity survey line (measured by intersecting the long axis of the red patch at a large angle) is surveyed, and the measuring points of the vertical profile of the high-density resistivity survey line are jointly surveyed using the Wenner device and the Schlumberger device. Among them, the joint survey is conducted first with an initial exploration, and then a detailed exploration, so as to improve the accuracy of the joint survey results and further improve the accuracy of the target tunnel position obtained subsequently. The measuring point spacing for the initial exploration is set to 10m, and the measuring point spacing for the detailed exploration is set to 5m. The high-density resistivity method implemented in this application can determine the apparent resistivity characteristics of tunnels and fault profiles shallower than 150m underground.

[0062] The conventional high-density resistivity method uses a single device for field operations, and there are certain deficiencies in the acquisition of underground electrical parameter signals. In recent years, with the improvement of big data fusion technology and data processing capabilities, the joint survey and inversion technology of multiple devices has become a trend. Since different types of devices have certain differences in vertical and horizontal resolution, anti-interference and timeliness, etc., through the joint resistivity inversion technology of multiple devices, multi-data fusion processing and joint inversion calculation can be carried out to achieve the refined detection of underground electrical structures, which is especially suitable for the fine detection of complex geological structures. Therefore, the high-density resistivity method of this application adopts a one-time pole arrangement, and its intelligent pole running working mode greatly improves the applicability of the conventional DC resistivity method, and adopts Wenner, Schlumberger, dipole-dipole and other device types for joint survey, which can collect the apparent resistivity of different characteristics on the vertical section of the high-density resistivity survey line, so that the distribution of multiple profile resistivities obtained is more comprehensive, and the fine detection of complex and abnormal geological conditions is realized.

[0063] In an exemplary embodiment of the present application, the obtained high-density resistivity measurement line is longer than 600 m. When the Wenner device and the Schlumberger device are used for joint survey, both devices are set at each measuring point, and the apparent resistivity data of the two devices are collected at the same time, and the apparent resistivity data collected by the two devices are used as the profile resistivity.

[0064] See also Figure 4 , Figure 4 This is a comparison chart of the test results of different apparent resistivity test devices, such as Figure 4 In the figure, the resistivity distribution of multiple sections measured by using only the Wenner device, the resistivity distribution of multiple sections measured by using only the Schlumberger device, and the resistivity distribution of multiple sections obtained by joint survey using the Wenner device and the Schlumberger device are shown. Among them, the yellow and red surface or linear patches are low-resistance distribution areas, and the blue ones are high-resistance distribution areas. According to the three distributions, the resistivity distribution of multiple sections obtained by joint survey using the Wenner device and the Schlumberger device is more comprehensive and more accurate.

[0065] Optionally, based on the abnormal resistivity distribution and the profile resistivity distribution, the location of the initial measured tunnel is determined, including:

[0066] Based on the abnormal resistivity distribution, the abnormal area is divided;

[0067] Based on the resistivity distribution of the profile, the high-density area is divided;

[0068] Obtain the overlapped area between the abnormal area and the high-density area;

[0069] Based on the overlapping area, the initial measured tunnel position is obtained.

[0070] In this embodiment, the abnormal area corresponding to the abnormal resistivity distribution is an area where a tunnel may exist, and the high-density area corresponding to the profile resistivity distribution is an area where the possibility of the tunnel is relatively high. Based on the overlap between the abnormal area and the high-density area, the possibility of the existence of the tunnel is greater than the former two. Therefore, the initial tunnel position is obtained based on the overlap area, which can improve the accuracy of the initial tunnel position and reduce the workload of subsequent drilling scanning, thereby shortening the time required to obtain accurate target survey information of the tunnel, shortening the time for tunnel source control based on the target survey information, and reducing the difficulty of tunnel source control and improving control efficiency.

[0071] Optionally, the overlap area includes a plurality of overlap positions; obtaining the initial measured lane position based on the overlap positions includes:

[0072] Determine the sorting order of multiple overlapping positions according to preset sorting requirements;

[0073] Connect multiple overlapping positions in sorted order to obtain the initial measured tunnel position.

[0074] In this embodiment, the preset sorting requirements include: selecting one of the multiple overlapping positions as the starting position, and marking the serial number of the starting position as 1; searching for the first overlapping position that is closest to the overlapping position and the second overlapping position that is closest to the overlapping position from the overlapping positions with unmarked serial numbers; marking the serial number of the first overlapping position as the serial number -1 of the starting position, and marking the serial number of the second overlapping position as the serial number +1 of the starting position; again searching for the third overlapping position that is closest to the first overlapping position from the overlapping positions with unmarked serial numbers, marking the serial number of the third overlapping position as the serial number -1 of the first overlapping position, and again searching for the fourth overlapping position that is closest to the second overlapping position from the overlapping positions with unmarked serial numbers, marking the serial number of the fourth overlapping position as the serial number +1 of the second overlapping position, until each overlapping position is marked with a serial number; sorting the multiple overlapping positions according to the serial numbers from small to large to obtain the corresponding sorting order. In this embodiment, by connecting multiple overlapping positions according to a sorting order determined based on preset sorting requirements, point-to-line conversion is achieved, so that the predicted direction of the tunnel can be understood, and the initial measured tunnel position is obtained based on the predicted direction, which facilitates subsequent verification based on the initial measured tunnel position to obtain a target tunnel position with higher accuracy.

[0075] Optionally, the initially measured lane position is verified to obtain the target lane position, including:

[0076] The micro-vibration exploration method is used to measure the wave velocity of the initial measured tunnel position to obtain the precise measured tunnel position;

[0077] The charging method is used to measure the electrical properties of the precise lane position through rated power to obtain the target lane position.

[0078] In this embodiment, the micro-motion exploration method and the charging method are used to double-verify the initial measured lane position, further eliminating useless lane positions, so that the obtained target lane position can meet the accuracy requirements, which is convenient for subsequent accurate drilling and scanning exploration of the lane, so as to reduce the workload of drilling and scanning, thereby shortening the time consumed to obtain accurate target survey information of the lane, shortening the time for lane source treatment based on the target survey information, and thus reducing the difficulty of lane source treatment and improving treatment efficiency. Among them, the rated power is greater than the preset power.

[0079] In an exemplary embodiment, when the mining tunnel is filled with water, there will be a continuous water gushing scene at a certain outcrop in the tunnel, and the water volume is relatively stable. This phenomenon can be obtained through hydrogeological surveys to form the tunnel filling situation. And when there is a void, water filling or cavity in the tunnel, its wave velocity will be different from the surrounding geological body, which is the basis of the physical parameters interpreted by the micro-seismic exploration method. At the same time, the tunnel is filled with water, and a large amount of metal ions or salt-containing minerals will be dissolved in the water, with extremely high conductivity and excellent conductivity, which will form a conductive channel along the tunnel and cracks. At this time, the charging method is used at the tunnel outlet to measure the electrical properties through a rated power higher than the preset power. Then, the potential anomaly detection is carried out on the surface within a certain distance range (1km to 3km) from the measuring point, and there will be obvious electrical reactions. In this way, this application is based on the initial survey of the tunnel location, combined with the tunnel filling situation of the hydrogeological survey. Within the range of 1km to 3km from the tunnel outlet, the equivalent reverse flux transient electromagnetic method and the high-density resistivity method both show the location of low resistivity. By utilizing the difference in electrical properties and wave velocity physical properties, the micro-motion exploration method and the charging method can be used for more accurate verification exploration to obtain the target tunnel location with accuracy that meets the requirements. Among them, the measurement point locations of the micro-motion exploration method and the charging method are the same as the measurement point locations when the high-density resistivity method is used for detailed exploration, that is, the measurement point distances of the micro-motion exploration method and the charging method are both 5m.

[0080] See also Figure 5 , Figure 5 This is a schematic diagram of a process flow of a mine tunnel exploration method provided in an exemplary embodiment of the present application. Figure 5As shown, when accurately detecting the tunnels of abandoned mines, it is first necessary to conduct on-site exploration, data collection and hydrogeological surveys of the abandoned mines to obtain geological information such as faults, ore veins, collected tunnels, water-discharging mine caves, and slag accumulation areas in the mining area (area to be detected). Based on this geological information, the mine tunnel exploration method of this application is applied, and the equivalent reverse flux transient electromagnetic method is used to explore the area to be detected, and the abnormal resistivity distribution is obtained. Based on the abnormal resistivity distribution, the abnormal area in the area to be detected can be delineated. Secondly, the high-density resistivity method is used, combined with the abnormal resistivity distribution, to obtain the initial measurement of the tunnel position and the predicted crack position of the possible tunnel cracks. Then, based on the wave velocity and electrical property differences of the tunnel, the micro-motion exploration method and the charging method are used to verify the initial measurement of the tunnel position and the predicted position of the tunnel cracks, and determine the target tunnel position related to the outlet and the target crack position of the tunnel cracks that meet the requirements of the accuracy of the tunnel. Finally, drilling verification is carried out based on the target tunnel position and target fissure position to drill a hole from the surface to the target tunnel position and the target fissure position, and the borehole geological radar is used to scan in the drilled hole to obtain the target survey information within a radius of 5m or 10m in the tunnel, indicating the accurate location for the subsequent source control of the tunnel curtain grouting filling, and formulating effective control measures in advance based on the target survey information, thereby improving the efficiency of source control and reducing the difficulty of source control. Among them, the abnormal area includes the resistivity linear abnormal zone and the planar abnormal area; the location information of the initial tunnel position and the predicted fissure position includes depth information; the target survey information includes the distribution of surrounding tunnels and the development of tunnel fissures.

[0081] See also Figure 6 , Figure 6 A mine tunnel exploration system is shown as an exemplary embodiment of the present application. Figure 6 As shown, the present application provides a mine tunnel exploration system, comprising:

[0082] The first acquisition module is used to explore the area to be detected in the mine using the equivalent reverse flux transient electromagnetic method to obtain the abnormal resistivity distribution;

[0083] The second acquisition module is used to determine the profile resistivity distribution based on the abnormal resistivity distribution by using the high-density resistivity method;

[0084] A determination module is used to determine the location of the initial survey tunnel based on the abnormal resistivity distribution and the profile resistivity distribution;

[0085] A verification module is used to verify the initial measured lane position and obtain the target lane position;

[0086] The module is used to perform drilling scanning on the target tunnel position to obtain target survey information.

[0087] A mine tunnel exploration system of this embodiment uses the first acquisition module and the second acquisition module to obtain the abnormal resistivity distribution and profile resistivity distribution of the mine's to-be-detected area through the equivalent reverse flux transient electromagnetic method and the high-density resistivity method, so that the resistance characteristics of the tunnels with relatively complex physical characteristics that may exist in the to-be-detected area can be understood, and the determination module is used to preliminarily determine the possible initial measurement tunnel position directly based on the two distribution conditions. Then the initial measurement tunnel position is verified by the verification module to obtain the target tunnel position with the required accuracy, and the target tunnel position is accurately drilled and scanned by the acquisition module to obtain the target survey information near the tunnel. In this way, the position of the tunnel with relatively complex physical characteristics in the to-be-detected area is repeatedly determined and verified by multiple methods, and the accurate exploration of the tunnel is realized, which can improve the accuracy of the obtained target tunnel position, reduce the workload of drilling scanning, and thus shorten the time spent on obtaining accurate target survey information of the tunnel, so that the time for tunnel source treatment based on the target survey information is shortened, thereby reducing the difficulty of tunnel source treatment and improving the efficiency of treatment.

[0088] Optionally, the first obtaining module is specifically used to:

[0089] Using the equivalent reverse flux transient electromagnetic method, the locations of multiple measuring points in the mine area to be detected are determined based on the preset distance requirements, and the apparent resistivity of each measuring point is obtained;

[0090] Based on the transient relaxation inversion method, multiple abnormal resistivities among multiple apparent resistivities are determined;

[0091] The distribution of multiple abnormal resistivities is obtained as the abnormal resistivity distribution of the area to be detected.

[0092] Optionally, the first obtaining module is specifically used to:

[0093] The transient relaxation inversion method is used to invert multiple apparent resistivities to obtain multiple relative resistivities.

[0094] For each relative resistivity, obtaining the difference between the relative resistivity and the corresponding apparent resistivity;

[0095] When the absolute value of the difference is greater than the preset abnormal value, the corresponding apparent resistivity is taken as the abnormal resistivity.

[0096] Optionally, the second obtaining module is specifically used to:

[0097] Based on the abnormal resistivity distribution, the abnormal area is divided;

[0098] Make large-angle intersections in abnormal areas to obtain high-density resistivity survey lines;

[0099] The vertical profile of the high-density resistivity survey line is surveyed using the high-density resistivity method to obtain multiple profile resistivities;

[0100] The distribution of multiple profile resistivities is obtained as the profile resistivity distribution of the area to be detected.

[0101] Optionally, a module is determined, specifically for:

[0102] Based on the abnormal resistivity distribution, the abnormal area is divided;

[0103] Based on the resistivity distribution of the profile, the high-density area is divided;

[0104] Obtain the overlapped area between the abnormal area and the high-density area;

[0105] Based on the overlapping area, the initial measured tunnel position is obtained.

[0106] Optionally, the overlap area includes a plurality of overlap positions; and the determination module is specifically configured to:

[0107] Determine the sorting order of multiple overlapping positions according to preset sorting requirements;

[0108] Connect multiple overlapping positions in sorted order to obtain the initial measured tunnel position.

[0109] Optionally, get the module, specifically for:

[0110] The micro-vibration exploration method is used to measure the wave velocity of the initial measured tunnel position to obtain the precise measured tunnel position;

[0111] The charging method is used to measure the electrical properties of the precise lane position through rated power to obtain the target lane position.

[0112] A computing device in an embodiment of the present application includes a memory, a processor, and a program stored in the memory and running on the processor. When the processor executes the program, part or all of the steps of the above-mentioned mine tunnel exploration method are implemented.

[0113] Among them, the computing device can be a computer, and correspondingly, its program is computer software. The above-mentioned parameters and steps in a computing device of the present application can refer to the parameters and steps in an embodiment of a mine tunnel exploration method mentioned above, and will not be repeated here.

[0114] In an embodiment of the present application, a computer-readable storage medium is provided, in which instructions are stored. When the instructions are executed, the steps of the above-mentioned mine tunnel exploration method are executed.

[0115] The computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0116] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method of the embodiment of the present disclosure. The aforementioned computer-readable storage medium may be a non-transitory computer-readable storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a disk or an optical disk, and other media that can store program codes, or a transient computer-readable storage medium.

[0117] The flowchart and block diagram in the accompanying drawings illustrate the possible architecture, functions and operations of the system, method and computer program product according to various embodiments of the present application. Wherein, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0118] Those skilled in the art know that the present application can be implemented as a system, method or computer program product. Therefore, the present disclosure can be specifically implemented in the following forms, namely: it can be complete hardware, it can be complete software (including firmware, resident software, microcode, etc.), or it can be a combination of hardware and software, generally referred to as "module" or "system" herein. In addition, in some embodiments, the present application can also be implemented in the form of a computer program product in one or more computer-readable media, and the computer-readable medium contains computer-readable program code. Computer-readable storage media can be, for example, but not limited to - electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or devices, or any combination of the above.

[0119] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0120] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A mine tunnel exploration method, characterized in that: include: Use the equivalent reverse flux transient electromagnetic method to explore the area to be explored in the mine and obtain the abnormal resistivity distribution; Determine the profile resistivity distribution based on the abnormal resistivity distribution using a high-density resistivity method; Determining the location of the initial measured tunnel based on the abnormal resistivity distribution and the profile resistivity distribution; Verifying the initially measured lane position to obtain the target lane position; Drilling scan is performed on the target tunnel position to obtain target survey information.

2. The method according to claim 1, characterized in that The method of using the equivalent reverse flux transient electromagnetic method to explore the area to be detected in the mine to obtain the abnormal resistivity distribution includes: Using the equivalent reverse flux transient electromagnetic method, based on the preset distance requirement, multiple measuring point positions of the mine area to be detected are determined, and the apparent resistivity of each measuring point position is obtained; Based on the transient relaxation inversion method, a plurality of abnormal resistivities among the plurality of apparent resistivities are determined; The distribution conditions of the multiple abnormal resistivities are obtained as the distribution conditions of the abnormal resistivity of the area to be detected.

3. The method according to claim 2, characterized in that The method of determining a plurality of abnormal resistivities among the plurality of apparent resistivities based on the transient relaxation inversion method comprises: Inverting the plurality of apparent resistivities using a transient relaxation inversion method to obtain a plurality of relative resistivities; For each relative resistivity, obtaining a difference between the relative resistivity and the corresponding apparent resistivity; When the absolute value of the difference is greater than a preset abnormal value, the corresponding apparent resistivity is taken as the abnormal resistivity.

4. The method according to claim 1, characterized in that: The method of using the high-density resistivity method to determine the profile resistivity distribution based on the abnormal resistivity distribution includes: Based on the abnormal resistivity distribution, an abnormal area is obtained; Performing a large-angle intersection on the abnormal area to obtain a high-density resistivity survey line; Using a high-density resistivity method to survey a vertical section of the high-density resistivity survey line to obtain multiple section resistivities; The distribution conditions of the multiple cross-sectional resistivities are obtained as the cross-sectional resistivity distribution conditions of the area to be detected.

5. The method according to claim 1, characterized in that The determining of the initial measured tunnel position based on the abnormal resistivity distribution and the profile resistivity distribution includes: Based on the abnormal resistivity distribution, an abnormal area is obtained; Based on the resistivity distribution of the profile, a high-density area is obtained; Acquire an overlapping area between the abnormal area and the high-density area; Based on the overlapped area, the initial measured lane position is obtained.

6. The method according to claim 5, characterized in that The overlap area includes a plurality of overlap positions; and obtaining the initial measured lane position based on the overlap positions includes: Determining a sorting order of the plurality of overlapping positions according to a preset sorting requirement; The multiple overlapping positions are connected according to the sorting order to obtain the initial measured tunnel position.

7. The method according to any one of claims 1 to 6, characterized in that: The verifying the initially measured lane position to obtain the target lane position includes: Using the micro-vibration exploration method to measure the wave velocity of the initially measured tunnel position, and obtain the precisely measured tunnel position; The charging method is used to electrically measure the precise lane position using rated power to obtain the target lane position.

8. A mine tunnel exploration system, characterized in that: include: The first acquisition module is used to explore the area to be detected in the mine using the equivalent reverse flux transient electromagnetic method to obtain the abnormal resistivity distribution; A second obtaining module is used to determine the profile resistivity distribution based on the abnormal resistivity distribution by using a high-density resistivity method; A determination module, used to determine the location of the initial measured tunnel based on the abnormal resistivity distribution and the profile resistivity distribution; A verification module, used to verify the initially measured lane position to obtain a target lane position; The obtaining module is used to perform drilling scanning on the target tunnel position to obtain target survey information.

9. A computing device comprising a memory, a processor, and a program stored in the memory and running on the processor, characterized in that: When the processor executes the program, the steps of a mine tunnel exploration method as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions, and when the instructions are executed on a terminal device, the terminal device executes the steps of a mine tunnel exploration method as described in any one of claims 1 to 7.

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