Geological exploration methods and devices

Abstract

The present application proposes a geological exploration method and device, which relates to the field of geophysical exploration technology. The method includes: obtaining surface geological information of the detection area, the surface geological information at least includes soil thickness, elastic modulus, Poisson's ratio and water content; based on the surface geological information, predicting the target energy conversion threshold corresponding to the detection area; according to the target energy conversion threshold, determining the target minimum excitation pressure corresponding to the controllable shock source; controlling the controllable shock source to launch shock bombs at the target point in the detection area with a working excitation pressure greater than the target minimum excitation pressure to emit body wave signals; collecting seismic trace data corresponding to the body wave signals, and performing inversion operations based on the seismic trace data to generate geological structure imaging data of the detection area. The present application controls the controllable shock source to launch shock bombs at a minimum excitation pressure greater than the target energy conversion threshold, so that the seismic energy component excited by the shock bomb is reversed, thereby realizing deep body wave exploration.

Description

Technical Field

[0001] The present application relates to the field of geophysical detection technology, and in particular to a geological detection method and device. Background Art

[0002] Before designing and constructing underground projects, it is necessary to explore the detailed geological structure of the operation area as finely as possible to achieve reasonable and economical design, early warning and prevention of underground engineering geological disasters. How to conduct high-precision exploration of geological structures has become the focus of research. Summary of the invention

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

[0004] To this end, the first purpose of this application is to propose a geological exploration method for high-precision geological exploration.

[0005] The second objective of this application is to provide a geological exploration device.

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

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

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

[0009] To achieve the above-mentioned purpose, the first embodiment of the present application proposes a geological exploration method, including:

[0010] Acquiring surface geological information of the detection area, wherein the surface geological information includes at least soil layer thickness, elastic modulus, Poisson's ratio and water content;

[0011] Based on the surface geological information, predicting a target energy conversion threshold corresponding to the detection area;

[0012] Determining a target minimum excitation gas pressure corresponding to the controllable shock source according to the target energy conversion threshold;

[0013] Controlling the controllable shock source to impact the target point in the detection area with a working excitation air pressure greater than the target minimum excitation air pressure to stimulate the emission of body wave signals;

[0014] Seismic gather data corresponding to the body wave signal is collected, and an inversion operation is performed based on the seismic gather data to generate geological structure imaging data of the detection area.

[0015] To achieve the above-mentioned purpose, the second embodiment of the present application proposes a geological exploration device, including:

[0016] An acquisition module, used to acquire surface geological information of the detection area, wherein the surface geological information at least includes soil layer thickness, elastic modulus, Poisson's ratio and water content;

[0017] A prediction module, used for predicting a target energy conversion threshold corresponding to the detection area based on the surface geological information;

[0018] A determination module, used to determine a target minimum excitation gas pressure corresponding to the controllable shock source according to the target energy conversion threshold;

[0019] A controllable shock source, used to impact the target point in the detection area with a working excitation air pressure greater than the minimum excitation air pressure of the target, so as to stimulate the emission of body wave signals;

[0020] The acquisition module is used to acquire the seismic gather data corresponding to the body wave signal, and perform inversion operation based on the seismic gather data to generate geological structure imaging data of the detection area.

[0021] To achieve the above-mentioned purpose, the third aspect embodiment of the present application proposes an electronic device, comprising: a processor; and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory, so that the processor can execute the geological exploration method described in the first aspect embodiment above.

[0022] To achieve the above-mentioned purpose, the fourth aspect of the present application proposes a computer-readable storage medium on which a computer program is stored, and the computer instructions are used to enable the computer to execute the geological exploration method described in the above-mentioned first aspect.

[0023] To achieve the above-mentioned purpose, the fifth aspect of the present application proposes a computer program product, including a computer program, which, when executed by a processor, implements the geological exploration method described in the first aspect of the present application.

[0024] The geological detection method provided in this application evaluates the target energy conversion threshold of the detection area by pre-evaluating the soil thickness and mechanical parameters on site. K , and control the controllable shock source to be greater than K The corresponding minimum excitation air pressure is used to launch the impact bomb, so that the seismic energy component excited by the impact bomb will be reversed, thereby realizing deep body wave exploration.

[0025] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0027] Figure 1 A schematic diagram of the structure of a geological exploration device provided in an embodiment of the present application;

[0028] Figure 2 A schematic diagram of the structure of another geological exploration device provided in an embodiment of the present application;

[0029] Figure 3 A schematic diagram of the structure of another geological exploration device provided in an embodiment of the present application;

[0030] Figure 4 A schematic diagram of a flow chart of a geological exploration method provided in an embodiment of the present application;

[0031] Figure 5 A schematic diagram of seismic gather data provided by an embodiment of the present application;

[0032] Figure 6 A schematic diagram of geological structure imaging data provided by an embodiment of the present application;

[0033] Figure 7 A schematic flow chart of another geological exploration method provided in an embodiment of the present application;

[0034] Figure 8 A schematic diagram of the structure of a geological exploration device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0036] The geological exploration method and device of the embodiments of the present application are described below with reference to the accompanying drawings.

[0037] Figure 1 A schematic diagram of the structure of a geological exploration device provided in an embodiment of the present application. Figure 1 As shown, the geological exploration device 100 includes: a carrying part 10, a launching mechanism 20, a hydraulic orientation mechanism 30, a controller 40 and a power supply mechanism 50.

[0038] In some embodiments, the carrying portion 10 has a moving function, and the launching mechanism 20 , the hydraulic orienting machine 30 , the controller 40 , and the power supply mechanism 50 are arranged on the carrying portion 10 .

[0039] In some embodiments, the hydraulic orientation mechanism 30 is used to adjust the launching direction of the launching mechanism 20 to face the target point in the downhole detection area.

[0040] In some embodiments, the launching mechanism 20 is used to launch an impact bomb toward the target point with a working excitation air pressure greater than the target minimum excitation air pressure to excite the body wave signal.

[0041] In some embodiments, the target minimum excitation pressure is the minimum excitation pressure corresponding to the target energy conversion threshold of the detection area. K When the actual energy of the impact projectile is greater than the target energy conversion threshold, the impact projectile mainly generates surface wave energy, which is only applicable to surface wave detection; K When the earthquake energy component excited by the impact bomb will be reversed, the deep body wave energy will be dominant, while the shallow surface wave will tend to be flat. At this time, the earthquake source is suitable for deep high-resolution geological exploration projects. For the determination process of the target minimum excitation pressure, please refer to the relevant content of the following embodiment S403, and the steps are repeated here.

[0042] In some embodiments, the target energy conversion threshold is determined based on surface geological information of the detection area.

[0043] In some embodiments, after obtaining the surface geological information, the target energy conversion threshold corresponding to the detection area can be determined based on the soil thickness, elastic modulus, Poisson's ratio and water content. The specific process can be referred to the relevant content of the following embodiment S402, and the steps are repeated here.

[0044] In some embodiments, body wave signals are used to determine geological structure imaging data of the detection area.

[0045] In some embodiments, detectors are distributed in the detection area, and reflected signals or scattered signals corresponding to body wave signals are collected based on the distributed detectors to obtain seismic gather data corresponding to broadband body wave signals.

[0046] In some embodiments, the controller 40 is used to control the launching mechanism 20 and the hydraulic orientation mechanism 30, that is, the controller 40 can control the launching mechanism 20 to launch the impact bomb, and can also control the hydraulic orientation mechanism 30 to adjust the launching direction.

[0047] In some embodiments, the power supply mechanism 50 is used to supply power to the geological exploration device 100 .

[0048] In some embodiments, the power supply mechanism 50 is a generator and a generator set, which can be a diesel generator and a generator set.

[0049] The geological detection device provided in the present application launches impact bombs at a minimum excitation air pressure corresponding to a target energy conversion threshold greater than the detection area, so that the seismic energy component excited by the impact bomb will be reversed, thereby realizing deep body wave detection and improving the detection accuracy of geological structure imaging data.

[0050] Figure 2 A schematic diagram of the structure of another geological exploration device provided in an embodiment of the present application. Figure 2 As shown, the geological exploration device 100 includes: a carrying part 10, a launching mechanism 20, a hydraulic orientation mechanism 30, a controller 40, a power supply mechanism 50 and a recovery mechanism 60.

[0051] In some embodiments, the carrying portion 10 includes a carrying platform 11 and a walking mechanism 12 .

[0052] In some embodiments, the launching mechanism 20 , the hydraulic orientation mechanism 30 , the controller 40 , the power supply mechanism 50 and the recovery mechanism 60 are all installed or arranged on the carrying platform 11 .

[0053] In some embodiments, the traveling mechanism 12 may be a crawler-type traveling mechanism.

[0054] In some embodiments, the traveling mechanism 12 may be a vehicle-type traveling mechanism.

[0055] In some embodiments, the controller 40 is connected to the walking mechanism 12 , and the controller 40 is also used to send walking instructions to the walking mechanism 12 . Further, the walking mechanism 12 is used to drive the carrying platform 11 to move according to the walking instructions.

[0056] In some embodiments, the controller 40 is further used to send a walking instruction to the walking mechanism after the impact bomb is launched according to the relative position relationship between the next target point and the current target point.

[0057] In some embodiments, the geological detection device can be moved in the underground tunnel space. After each impact bomb is fired, the geological detection device can be moved to the next target point, such as Figure 4 shown.

[0058] In some embodiments, the launching mechanism 20 may include, but is not limited to: an air compressor 21 , a high-pressure air chamber 22 , a launching cavity 23 and an impact bomb 24 .

[0059] In some embodiments, the air compressor 21 is connected to the high-pressure air chamber 22, optionally through a gas pipeline.

[0060] In some embodiments, the high-pressure air chamber 22 is connected to the launch cavity 23 , and the air compressor 21 and the high-pressure air chamber 22 are respectively connected to the controller 40 .

[0061] In some embodiments, the controller 40 is also used to send an inflation command to the air compressor 21. Further, the air compressor 21 is used to pressurize air into the high-pressure air chamber 22 according to the inflation command to increase the air pressure in the high-pressure air chamber 22 so that the air pressure in the high-pressure air chamber 22 is greater than or equal to the target minimum excitation air pressure.

[0062] In some embodiments, an air pressure sensor is disposed in the high-pressure air chamber 22 , and the real-time air pressure in the high-pressure air chamber 22 is detected by the air pressure sensor.

[0063] In some embodiments, the launch cavity 23 is used to launch impact bombs at target points in the detection area at a working excitation air pressure greater than the target minimum excitation air pressure. That is, when the air pressure in the high-pressure air chamber 22 is greater than or equal to the target minimum excitation air pressure, the working excitation air pressure of the launch cavity 23 can be greater than the target minimum excitation air pressure, and then under the control of the controller 40, the high-pressure air chamber 22 is opened, and the impact bombs in the launch cavity 23 are launched under the high pressure of the high-pressure air chamber 22.

[0064] In some embodiments, an isolation component is provided between the high-pressure gas chamber 22 and the launch cavity 23. In response to the isolation component being opened, the gas in the high-pressure gas chamber 22 rushes into the launch cavity 23 at a higher air pressure, thereby realizing high-speed launch of the impact bomb, which then hits the coal rock and stimulates the body wave signal.

[0065] In some embodiments, the isolation component provided between the high-pressure air chamber 22 and the launch cavity 23 may be a control door body.

[0066] In some embodiments, the controller 40 is also used to send an opening instruction to the high-pressure air chamber 22 when the current air pressure of the high-pressure air chamber 22 is greater than or equal to the target minimum excitation air pressure. Further, the high-pressure air chamber 22 is used to open the isolation component between the high-pressure air chamber 22 and the launch cavity 23 according to the opening instruction.

[0067] In some embodiments, the recovery mechanism 60 is connected to the controller 40, and the controller 40 is also used to send a recovery instruction to the recovery mechanism 60 to start the recovery mechanism 60. Further, the recovery mechanism 60 is used to extract the air in the launching cavity 23, so that the impact rebound can be pushed back to the initial launching position under the action of the external atmospheric pressure.

[0068] It is understandable that the impact bullet will not be ejected out of the launching cavity 23 after being launched, and the impact bullet will still stay in the launching cavity 23 after being launched.

[0069] In some embodiments, the recovery mechanism 60 may be a vacuum pump, wherein the vacuum pump is connected to the launch cavity 23 , optionally through a gas pipeline, so as to achieve the purpose of evacuating the gas from the launch cavity 23 .

[0070] In some embodiments, one end of the hydraulic orientation mechanism 30 is fixed on the carrying platform 11, and the other end is connected to the housing of the launch cavity 23, and the hydraulic orientation mechanism 30 is also connected to the controller 40. The controller 40 is also used to send a direction adjustment instruction to the hydraulic orientation mechanism 30. Further, the hydraulic orientation mechanism 30 is also used to adjust the launch direction of the launch cavity 23 according to the direction adjustment instruction. For example, the direction can be adjusted up, down, left, and right, so that the launch direction is toward the target point.

[0071] In some embodiments, the controller 40 may have a gas pressure regulating component for configuring the target minimum excitation gas pressure corresponding to the launching mechanism 20 .

[0072] In the implementation example of the present application, a large-mass, high-speed pneumatic regular-shaped impact bomb is used for impact excitation to excite a real broadband pulse wave, which greatly improves the real frequency band of the pulse wave. Furthermore, the waveform of the seismic wavelet can be effectively controlled and repeatedly and controllably excited by controlling the shape, direction, speed, material, etc. of the impact bomb. Moreover, the seismic wavelet has a large main lobe and extremely small side lobes, which is conducive to full waveform inversion imaging in subsequent high-resolution imaging. Since the seismic imaging resolution is directly proportional to the pulse wave frequency band, the resolution of geological exploration imaging engineering can be improved.

[0073] In the embodiment of the present application, by making the working excitation gas pressure of the controllable shock source greater than the target minimum excitation gas pressure, the seismic energy component excited by the shock bomb can be reversed, with deep body wave energy as the main component, thereby realizing the deep body wave detection function. Optionally, the body wave energy component excited by the shock bomb accounts for more than 50% of the pulse seismic wave.

[0074] In the embodiment of the present application, the excited broadband body wave signal can be a body wave signal that is truly and effectively reflected at a depth of 1000m. The frequency band range of the excited broadband body wave signal is (1~150Hz). Due to the large excitation air pressure, the excited signal has high energy and high penetration, and the earthquake source can be controlled, thereby realizing "small field and high precision" detection.

[0075] Figure 3 A schematic diagram of the structure of another geological exploration device provided in an embodiment of the present application. Figure 3 As shown, the geological exploration device 300 is a vehicle-mounted geological exploration device, and the geological exploration device 300 may include: a generator 31, a launch cavity 32, a hydraulic orientation mechanism 33, a controller 34, an air compressor 35, a high-pressure air chamber 36, and an impact bomb 37. It can be understood that the generator 31, the launch cavity 32, the hydraulic orientation mechanism 33, the controller 34, the air compressor 35, the high-pressure air chamber 36, and the impact bomb 37 are carried on the vehicle body.

[0076] In some embodiments, the hydraulic orientation structure 33 may be a lift hydraulic structure.

[0077] In some embodiments, the controller 34 can control the launching cavity 32 , the hydraulic orientation mechanism 33 , the air compressor 35 and the high-pressure air chamber 36 .

[0078] In some embodiments, the controller 34 may further configure an operating excitation gas pressure greater than a target minimum excitation gas pressure.

[0079] In some embodiments, the vehicle-mounted geological exploration device may further include a recovery mechanism. Figure 3 Not shown.

[0080] Above Figure 1~Figure 3 The geological detection device shown is a controllable impact geological detection device, which can be understood as a controllable impact source, which can be used not only for underground detection but also for ground detection. For example, the above-mentioned controllable impact source can be used in high-depth and high-resolution engineering geological seismic exploration projects such as water conservancy, bridges, tunnels, and subways. The above-mentioned controllable impact source acquires geological structure imaging data in the form of imitating seismic waves.

[0081] The present application also provides the following geological exploration method, which is based on the above-mentioned embodiment. Figure 1~Figure 3 The geological exploration method of the embodiment of the present application is described below with reference to the accompanying drawings.

[0082] Figure 4 A schematic diagram of a geological exploration method provided in an embodiment of the present application. Figure 4 As shown, the geological exploration method includes the following steps:

[0083] S401, obtaining surface geological information of the detection area, wherein the surface geological information at least includes soil layer thickness, elastic modulus, Poisson's ratio and water content.

[0084] In some embodiments, the thickness of the soil layer can be measured directly by excavating a soil profile.

[0085] In some embodiments, the thickness of the soil layer can be indirectly estimated by measuring the difference in physical properties of the soil medium, for example, by using geophysical methods such as geological radar.

[0086] In some embodiments, satellite remote sensing, drone remote sensing and other technologies are used to obtain electromagnetic wave information reflected or emitted by the surface, combined with image processing technology to estimate the thickness of the soil layer.

[0087] In some embodiments, the rebound deformation of the soil after the load is removed can be measured based on a static loading method, a dynamic loading method or a compression test method, thereby obtaining the rebound modulus.

[0088] In some embodiments, the lateral pressure coefficient of the soil can be measured by installing a sensor for measuring the lateral pressure, thereby indirectly calculating the Poisson's ratio.

[0089] In some embodiments, when applying the axial pressure, the lateral pressure is also applied to measure the relationship between the deformation and stress of the soil, and then calculate the Poisson's ratio.

[0090] In some embodiments, the weight of water in the soil and thus the moisture content can be determined by one of the methods of drying method, negative pressure gauge method, resistance method, gamma-ray method, optical measurement method and time domain reflectometry (TDR).

[0091] S402, predicting a target energy conversion threshold corresponding to the detection area based on the surface geological information.

[0092] In some embodiments, after acquiring the surface geological information, the target energy conversion threshold corresponding to the detection area can be determined based on the soil layer thickness, elastic modulus, Poisson's ratio and water content.

[0093] In some embodiments, the target energy conversion threshold can be set to K , when the actual energy of the impact projectile is less than the target energy conversion threshold K When the actual energy of the impact projectile is greater than the target energy conversion threshold, the impact projectile mainly generates surface wave energy, which is only applicable to surface wave detection; K When the earthquake energy component excited by the impact bomb is reversed, it will be mainly deep body wave energy, while the shallow surface wave will tend to be flat. At this time, the earthquake source is suitable for deep high-resolution geological exploration projects. In the embodiment of the present application, reasonable excitation pressure or energy is set by pre-assessing the on-site surface conditions, that is, soil thickness, mechanical parameters, etc., so as to utilize the reversal effect of earthquake energy components to realize the detection of deep body waves.

[0094] In some embodiments, the target energy conversion threshold can be determined using the following formula (1): K :

[0095] K = D k1 (1- q ) k2 ln( E (0.5+ r ))

[0096] in, Kis the target energy conversion threshold, k 1 and k 2 is the calibration value, D is the soil layer thickness, q is the moisture content, E is the elastic modulus, r is Poisson's ratio.

[0097] In some embodiments, the determination may be based on a calibration method. k 1 and k 2 value, optionally, k The value range of 1 is (1.08~1.12), k The value of 2 is -0.8.

[0098] S403, determining a target minimum excitation gas pressure corresponding to the controllable shock source according to a target energy conversion threshold.

[0099] After reaching the target energy conversion threshold K After that, the target energy conversion threshold K , determine the target minimum excitation pressure corresponding to the controllable shock source P .

[0100] In some embodiments, a mapping curve between the energy conversion threshold and the minimum excitation pressure can be constructed by experimental means. K Then, the target energy conversion threshold K Input the mapping curve to obtain the controllable shock source (that is, Figure 1~Figure 3 The target minimum excitation gas pressure corresponds to the geological detection device shown in the figure.

[0101] In some embodiments, a mapping relationship table between energy conversion threshold and minimum excitation pressure can be pre-established. Different energy conversion thresholds correspond to different minimum excitation pressures. K After that, the target minimum excitation gas pressure corresponding to the controllable shock source can be determined according to the target energy conversion threshold and the mapping relationship table.

[0102] Optionally, with a target energy conversion threshold K As the query condition, the mapping relationship table is queried to obtain the target minimum excitation gas pressure corresponding to the controllable impact source.

[0103] Optionally, with a target energy conversion threshold K As the query condition, determine whether the target energy conversion threshold exists in the mapping relationship table K In response to the presence of a target energy conversion threshold in the mapping relationship table, a minimum excitation gas pressure mapped to the target energy conversion threshold is determined as the target minimum excitation gas pressure.

[0104] In response to the target energy conversion threshold not existing in the mapping relationship table K , determine the first energy conversion threshold from the mapping relationship table, the first energy conversion threshold and the target energy conversion threshold K Adjacent and greater than the target energy conversion threshold K Further, a first minimum excitation gas pressure mapped to the first energy conversion threshold is determined as the target minimum excitation gas pressure.

[0105] In response to the target energy conversion threshold not existing in the mapping relationship table K , determine the second energy conversion threshold and the third energy conversion threshold, further determine the second minimum excitation pressure mapped to the second energy conversion threshold, and the third minimum excitation pressure mapped to the third energy conversion threshold, and obtain the target minimum excitation pressure based on the second minimum excitation pressure and the third minimum excitation pressure.

[0106] Optionally, an interpolation operation is performed on the second minimum excitation pressure and the third minimum excitation pressure to obtain a target minimum excitation pressure.

[0107] Optionally, a mean operation is performed on the second minimum excitation pressure and the third minimum excitation pressure to obtain a target minimum excitation pressure.

[0108] For example, a mapping relationship table between the energy conversion threshold and the minimum excitation pressure is pre-established, as shown in Table 1:

[0109] Table 1

[0110]

[0111] It is understood that each element in Table 1 exists independently. These elements are exemplarily listed in the same table, but it does not mean that all elements in the table must exist at the same time as shown in the table. The value of each element is independent of the value of any other element in Table 1. Therefore, those skilled in the art can understand that the value of each element in Table 1 is an independent embodiment.

[0112] For example, the target energy conversion threshold K When it is 20 kJ, the target minimum excitation pressure can be queried. P For another example, the target energy conversion threshold K When it is 24 kJ, it can be queried that it is greater than the target energy conversion threshold K , and the target energy conversion threshold K The adjacent first energy conversion threshold is 25 kJ, and the 1.69 MPa corresponding to the first energy conversion threshold of 25 kJ can be determined as the target minimum excitation pressure PFor another example, the target energy conversion threshold K When it is 23 kJ, the target energy conversion threshold can be found. K The adjacent second energy conversion threshold is 22.5 kJ and the third energy conversion threshold is 25 kJ. Based on the 1.61 MPa corresponding to 22.5 kJ and the 1.69 MPa corresponding to 25 kJ, the target minimum excitation pressure is determined. P For example, the target minimum excitation pressure is obtained by averaging 1.61 MPa corresponding to 22.5 kJ and 1.69 MPa corresponding to 25 kJ. P .

[0113] In some embodiments, the controllable impact source may have self-moving capability, for example, it may be carried on a movable platform, for example, the controllable impact source may be carried on a vehicle, for example, the controllable impact source may have a crawler-type walking structure. In the present application, the source vehicle is used as the source carrier, which inherits the advantages of convenience of mobile operation and small damage to the ground.

[0114] S404, controlling the controllable shock source to launch a shock bomb toward the target point in the detection area at a working excitation air pressure greater than the target minimum excitation air pressure to excite a body wave signal.

[0115] After determining the target minimum excitation pressure, the working excitation pressure of the controllable shock source can be configured. In order to achieve deep high-resolution geological detection, it is necessary to constrain the working excitation pressure of the controllable shock source to be greater than the target minimum excitation pressure. That is to say, the controllable shock source launches shock bombs to the target points in the detection area with a working excitation pressure greater than the target minimum excitation pressure to excite broadband body wave signals. In the embodiment of the present application, by exciting broadband body wave signals, the frequency band of the corresponding scattered signal or reflected signal is ensured to be wide enough to ensure the accuracy of subsequent seismic imaging.

[0116] In the implementation example of the present application, a large-mass, high-speed pneumatic regular-shaped impact bomb is used for impact excitation to excite a real broadband pulse wave, which greatly improves the real frequency band of the pulse wave. Furthermore, the waveform of the seismic wavelet can be effectively controlled and repeatedly and controllably excited by controlling the shape, direction, speed, material, etc. of the impact bomb. Moreover, the seismic wavelet has a large main lobe and extremely small side lobes, which is conducive to full waveform inversion imaging in subsequent high-resolution imaging. Since the seismic imaging resolution is directly proportional to the pulse wave frequency band, the resolution of geological exploration imaging engineering can be improved.

[0117] In the embodiment of the present application, by making the working excitation gas pressure of the controllable shock source greater than the target minimum excitation gas pressure, the seismic energy component excited by the shock bomb can be reversed, with deep body wave energy as the main component, thereby realizing the deep body wave detection function. Optionally, the body wave energy component excited by the shock bomb accounts for more than 50% of the pulse seismic wave.

[0118] In the embodiment of the present application, the excited broadband body wave signal can be a body wave signal that is truly and effectively reflected at a depth of 1000m. The frequency band range of the excited broadband body wave signal is (1~150Hz). Due to the large excitation air pressure, the excited signal has high energy and high penetration, and the earthquake source can be controlled, thereby realizing "small field and high precision" detection.

[0119] S405, collecting seismic gather data corresponding to the body wave signal, and performing inversion operation based on the seismic gather data to generate geological structure imaging data of the detection area.

[0120] In some embodiments, geophones are distributed in the detection area, and the reflected signals or scattered signals corresponding to the body wave signals are collected based on the distributed geophones to obtain seismic gather data corresponding to the broadband body wave signals. Figure 5 As shown in the figure, it is a schematic diagram of seismic gather data. Furthermore, after the excitation is completed, the full waveform inversion algorithm is applied to the seismic gather data to generate geological structure imaging data of the detection area, such as Figure 6 shown.

[0121] In some embodiments, the method provided in the embodiments of the present application can be mainly applied to high-depth and high-resolution geological seismic detection projects such as coal mines, water conservancy projects, bridges, tunnels, and subways. For example, the depth is 5,000 meters and the high resolution is 1 meter.

[0122] In the embodiment of the present application, under the premise of ensuring the wide bandwidth and penetration depth of pulse seismic wave excitation, the sub-wave main lobe energy is larger and the side lobes are less, which effectively improves the signal-to-noise ratio of the source and the imaging accuracy of abnormal structures. At the same time, there is no need to drill holes at the excitation point to bury explosives and cause explosive damage to the excitation point, which improves construction safety and is environmentally friendly and reduces harm to the environment. Furthermore, the controllable impact source can have the convenience of mobile operation, especially when carried on a source vehicle, it can reduce damage to the ground. At the same time, the present application directly uses large-mass, high-speed pneumatic impact bombs to excite real broadband pulse waves, which can greatly increase the real frequency band of the pulse wave and meet the high-resolution imaging requirements of geological structures.

[0123] Furthermore, the present application proposes the seismic energy component reversal effect, that is, when the energy conversion threshold is less than the target energy conversion threshold, K In the case ，When the energy of the impact bomb is less than K, it mainly generates surface wave energy, which is only suitable for surface wave detection; when the energy of the impact bomb is greater than K, the seismic energy component excited by the impact bomb will be reversed, mainly deep body wave energy, while shallow surface waves will tend to be flat, making the controllable impact source suitable for deep high-resolution geological detection projects. In this application, the soil thickness and mechanical parameters of the site are pre-evaluated to evaluate the detection area. K , and configure a controllable shock source to be greater than K The corresponding minimum excitation air pressure is used to launch the impact bomb, so that the seismic energy component excited by the impact bomb will be reversed, thereby realizing deep body wave detection.

[0124] Figure 7 A schematic diagram of another geological exploration method provided in an embodiment of the present application. Figure 7 As shown, the geological exploration method includes the following steps:

[0125] S701, obtaining surface geological information of the detection area, wherein the surface geological information at least includes soil layer thickness, elastic modulus, Poisson's ratio and water content.

[0126] S702, predicting a target energy conversion threshold corresponding to the detection area based on the surface geological information.

[0127] For a detailed description of steps S701 to S702, please refer to the relevant contents in the above embodiment, which will not be repeated here.

[0128] The following is a controllable shock source. Figure 3 Taking the vehicle-mounted controllable impact source in the example, the subsequent steps are explained:

[0129] S703, start the generator to supply power to the controllable impact source, and control the hydraulic directional mechanism to adjust the launching direction of the launching cavity toward the target point in the detection area.

[0130] In some embodiments, the generator 31 may be a diesel generator and a generator set, and the entire generator 31 is powered, that is, the controllable impact source is powered.

[0131] In some embodiments, the launching direction of the launching cavity 32 can be adjusted by the hydraulic orientation mechanism 33 so that the launching direction of the launching cavity 32 can be directed toward the target point in the detection area, that is, the hydraulic orientation mechanism 33 can adjust the direction of the launching cavity 32 to point to the target point. The hydraulic orientation mechanism 33 can receive a direction adjustment instruction from the controller 34, and then adjust the direction of the launching cavity 32.

[0132] S704, configuring the working excitation air pressure through the controller.

[0133] In some embodiments, a pre-set detection depth and signal-to-noise ratio index can be obtained, and a target increase coefficient of the excitation air pressure can be determined based on the detection depth and the signal-to-noise ratio index. Further, the target minimum excitation air pressure can be increased based on the target increase coefficient to obtain the working excitation air pressure of the controllable impact source. Optionally, the target increase coefficient is multiplied by the target minimum excitation air pressure, and the product is used as the working excitation air pressure of the controllable impact source. It can be understood that the target increase coefficient needs to be a value greater than 1, so that the working excitation air pressure can be greater than the target minimum excitation air pressure. Optionally, the target increase coefficient can be controlled in the range of (1.1~1.5).

[0134] After the working excitation air pressure is acquired, the working excitation air pressure of the controllable shock source can be configured through the controller 34 so that the controllable shock source can launch shock bombs under the working excitation air pressure.

[0135] S705, filling the high-pressure air chamber with compressed air to reach the working excitation air pressure.

[0136] S706, in response to the air pressure of the high-pressure air chamber reaching the working excitation air pressure, triggering the launch cavity to launch the impact bomb and rushing towards the target point at a set speed to excite the body wave signal.

[0137] In some embodiments, the launch cavity 32 is connected to the high-pressure gas chamber 36, and compressed air can be filled into the high-pressure gas chamber through a compressed gas cylinder or an air compressor 35 to increase the air pressure of the high-pressure gas chamber 36. In response to the air pressure of the high-pressure gas chamber 36 reaching the working excitation air pressure, the controller 34 can trigger the launch cavity 32 to launch an impact bomb, and the launched impact bomb can rush to the target point at a set speed to excite a broadband body wave signal. That is to say, after the air pressure of the high-pressure gas chamber 34 reaches the working excitation air pressure, the launch button on the controller 34 can be used to control the launch cavity 32 to launch an impact bomb outward, and the impact bomb can rush out of the launch part at a set speed, so that it can hit the target point in the detection area at high speed, and then generate a broadband body wave signal. In the embodiment of the present application, the energy component of the body wave signal accounts for more than 50% of the pulse seismic wave.

[0138] In some embodiments, there is an isolation component between the high-pressure gas chamber 36 and the launching cavity 32. When launching, the isolation component opens, allowing the gas in the high-pressure gas chamber 36 to rush into the launching cavity 32, thereby enabling the impact bomb 37 to impact outward from the initial launching position.

[0139] In the embodiment of the present application, under the premise of ensuring the wide bandwidth and penetration depth of pulse seismic wave excitation, the sub-wave main lobe energy is larger and the side lobes are less, which effectively improves the signal-to-noise ratio of the source and the imaging accuracy of abnormal structures. At the same time, there is no need to drill holes at the excitation point to bury explosives and cause explosive damage to the excitation point, which improves construction safety and is environmentally friendly and reduces harm to the environment. Furthermore, the controllable impact source can have the convenience of mobile operation, especially when carried on a source vehicle, it can reduce damage to the ground. At the same time, the present application directly uses large-mass, high-speed pneumatic impact bombs to excite real broadband pulse waves, which can greatly increase the real frequency band of the pulse wave and meet the high-resolution imaging requirements of geological structures.

[0140] Furthermore, in this application, the soil thickness and mechanical parameters of the site are pre-evaluated to estimate the detection area. K , and configure a controllable shock source to be greater than K The corresponding minimum excitation air pressure is used to launch the impact bomb, so that the seismic energy component excited by the impact bomb will be reversed, thereby realizing deep body wave detection.

[0141] It is understandable that Figure 4 and Figure 7 The geological exploration method shown is not only applicable to Figure 3 The vehicle-mounted controllable shock source shown is also suitable for Figure 1 and Figure 2 The controllable shock source shown.

[0142] Figure 8 A schematic diagram of the structure of a geological exploration device provided in an embodiment of the present application. Figure 8 As shown, the geological exploration device 800 includes: an acquisition module 81, a prediction model 82, a determination module 83, a controllable impact source 84 and a collection module 85.

[0143] An acquisition module 81 is used to acquire surface geological information of the detection area, wherein the surface geological information at least includes soil layer thickness, elastic modulus, Poisson's ratio and water content;

[0144] A prediction module 82, configured to predict a target energy conversion threshold corresponding to the detection area based on the surface geological information;

[0145] A determination module 83, configured to determine a target minimum excitation gas pressure corresponding to the controllable shock source according to the target energy conversion threshold;

[0146] A controllable shock source 84 is used to launch a shock bomb to the target point in the detection area at a working excitation air pressure greater than the target minimum excitation air pressure to excite a body wave signal;

[0147] The acquisition module 85 is used to acquire seismic gather data corresponding to the body wave signal, and perform inversion operations based on the seismic gather data to generate geological structure imaging data of the detection area.

[0148] In some embodiments, the prediction module 82 determines the target energy conversion threshold using the following formula:

[0149] K = D k1 (1- q ) k2 ln( E (0.5+ r ))

[0150] in, K is the target energy conversion threshold, k 1 and k 2 is the calibration value, D is the soil layer thickness, q is the moisture content, E is the elastic modulus, r is the Poisson's ratio.

[0151] In some embodiments, the determination module 83 is further configured to:

[0152] Determine the detection depth and signal-to-noise ratio indicators;

[0153] Determining a target height adjustment factor of the excitation air pressure according to the detection depth and the signal-to-noise ratio index;

[0154] The target minimum excitation air pressure is increased according to the target heightening coefficient to obtain the working excitation air pressure of the controllable impact source.

[0155] In some embodiments, the controllable shock source 84 includes a generator, a lifting hydraulic mechanism, a launcher, a compressed gas cylinder or an air compressor, a high-pressure gas chamber, and a shock bomb. The controllable shock source 84 is also used to:

[0156] Starting the generator to supply power to the controllable impact source, and controlling the lifting hydraulic mechanism to adjust the launching direction of the launching part toward the target point;

[0157] Configuring the working excitation air pressure by means of an air pressure regulating assembly;

[0158] Filling the high-pressure air chamber of the transmitting part with compressed air to reach the working excitation air pressure;

[0159] In response to the high-pressure air chamber of the launch unit reaching the working excitation air pressure, the launch unit is controlled to launch an impact bomb and rush toward the target point at a set speed to excite the body wave signal.

[0160] In some embodiments, the acquisition module 85 is further used to:

[0161] The reflected signal or scattered signal of the body wave signal is collected by the distributed detectors in the detection area to obtain the seismic gather data.

[0162] In some embodiments, the determination module 83 is further configured to:

[0163] Obtaining a mapping relationship table between energy conversion threshold and minimum excitation gas pressure;

[0164] The target minimum excitation gas pressure is determined according to the target energy conversion threshold and the mapping relationship table.

[0165] In some embodiments, the determination module 83 is further configured to:

[0166] Taking the target energy conversion threshold as a query condition, determining whether the target energy conversion threshold exists in the mapping relationship table;

[0167] In response to the target energy conversion threshold existing in the mapping relationship table, determining a minimum excitation gas pressure mapped with the target energy conversion threshold as the target minimum excitation gas pressure;

[0168] In response to the target energy conversion threshold not existing in the mapping relationship table, determining a first energy conversion threshold from the mapping relationship table, the first energy conversion threshold being adjacent to the target energy conversion threshold and greater than the target energy conversion threshold;

[0169] A first minimum excitation gas pressure mapped to the first energy conversion threshold is determined as the target minimum excitation gas pressure.

[0170] In some embodiments, the determination module 83 is further configured to:

[0171] In response to the target energy conversion threshold not existing in the mapping relationship table, determining a second energy conversion threshold and a third energy conversion threshold;

[0172] Determining a second minimum excitation gas pressure mapped to the second energy conversion threshold, and a third minimum excitation gas pressure mapped to the third energy conversion threshold;

[0173] The target minimum excitation gas pressure is obtained according to the second minimum excitation gas pressure and the third minimum excitation gas pressure.

[0174] In some embodiments, the determination module 83 is further configured to:

[0175] performing an interpolation operation on the second minimum excitation pressure and the third minimum excitation pressure to obtain the target minimum excitation pressure; or,

[0176] An average operation is performed on the second minimum excitation gas pressure and the third minimum excitation gas pressure to obtain the target minimum excitation gas pressure.

[0177] In the embodiment of the present application, under the premise of ensuring the wide bandwidth and penetration depth of pulse seismic wave excitation, the sub-wave main lobe energy is larger and the side lobes are less, which effectively improves the signal-to-noise ratio of the source and the imaging accuracy of abnormal structures. At the same time, there is no need to drill holes at the excitation point to bury explosives and cause explosive damage to the excitation point, which improves construction safety and is environmentally friendly and reduces environmental damage. Furthermore, the controllable impact source can have the convenience of mobile operation, especially when carried on a source vehicle, it can reduce damage to the ground. At the same time, the present application directly uses large-mass, high-speed pneumatic impact bombs to excite real broadband pulse waves, which can greatly increase the real frequency band of the pulse wave and meet the high-resolution imaging requirements of geological structures.

[0178] Furthermore, in this application, the soil thickness and mechanical parameters of the site are pre-evaluated to estimate the detection area. K , and configure a controllable shock source to be greater than K The corresponding minimum excitation air pressure is used to launch the impact bomb, so that the seismic energy component excited by the impact bomb will be reversed, thereby realizing deep body wave detection.

[0179] It should be noted that the explanation of the above-mentioned embodiment of the geological exploration method is also applicable to the geological exploration device of this embodiment, and will not be repeated here.

[0180] In order to implement the above embodiments, the present application also proposes an electronic device, comprising: a processor, and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the method provided by the above embodiments.

[0181] In order to implement the above embodiments, the present application also proposes a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the methods provided by the above embodiments.

[0182] In order to implement the above embodiments, the present application also proposes a computer program product, including a computer program, which implements the methods provided by the above embodiments when executed by a processor.

[0183] The collection, storage, use, processing, transmission, provision and application of user personal information involved in this application are in compliance with relevant laws and regulations and do not violate public order and good morals.

[0184] It should be noted that personal information from users should be collected for legitimate and reasonable purposes and should not be shared or sold outside of these legitimate uses. In addition, such collection / sharing should be carried out after receiving the user's informed consent, including but not limited to notifying the user to read the user agreement / user notice and sign the agreement / authorization including authorization of relevant user information before the user uses the function. In addition, any necessary steps should be taken to protect and safeguard access to such personal information data and ensure that others who have access to personal information data comply with its privacy policy and procedures.

[0185] This application is expected to provide an implementation scheme for users to selectively block the use or access of personal information data. That is, this application is expected to provide hardware and / or software to prevent or block access to such personal information data. Once the personal information data is no longer needed, risks can be minimized by limiting data collection and deleting data. In addition, when applicable, personal identifiers are removed from such personal information to protect the privacy of users.

[0186] In the description of the aforementioned embodiments, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they contradict each other.

[0187] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0188] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0189] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0190] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or a combination thereof: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0191] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0192] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0193] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A geological exploration method, characterized in that: The method comprises: Acquiring surface geological information of the detection area, wherein the surface geological information includes at least soil layer thickness, elastic modulus, Poisson's ratio and water content; Based on the surface geological information, predicting a target energy conversion threshold corresponding to the detection area; Determining a target minimum excitation gas pressure corresponding to the controllable shock source according to the target energy conversion threshold; Controlling the controllable shock source to launch a shock bomb toward the target point in the detection area at a working excitation air pressure greater than the target minimum excitation air pressure to excite a body wave signal; Collecting seismic gather data corresponding to the body wave signal, and performing inversion operation based on the seismic gather data to generate geological structure imaging data of the detection area; The target energy conversion threshold is determined using the following formula: K = D k1 (1- q ) k2 ln( E (0.5+ r )) in, K is the target energy conversion threshold, k 1 and k 2 is the calibration value, D is the thickness of the soil layer, q is the moisture content, E is the elastic modulus, r is the Poisson's ratio.

2. The method according to claim 1, characterized in that Before controlling the controllable shock source to launch a shock bomb toward the target point in the detection area at a working excitation air pressure greater than the target minimum excitation air pressure, the method further includes: Determine the detection depth and signal-to-noise ratio indicators; Determining a target height adjustment factor of the excitation air pressure according to the detection depth and the signal-to-noise ratio index; The target minimum excitation air pressure is increased according to the target heightening coefficient to obtain the working excitation air pressure of the controllable impact source.

3. The method according to any one of claims 1 to 2, characterized in that: The collecting of seismic gather data corresponding to the body wave signal comprises: The reflected signal or scattered signal of the body wave signal is collected by the distributed detectors in the detection area to obtain the seismic gather data.

4. The method according to any one of claims 1 to 2, characterized in that Determining the target minimum excitation gas pressure corresponding to the controllable shock source according to the target energy conversion threshold comprises: Obtaining a mapping relationship table between energy conversion threshold and minimum excitation gas pressure; The target minimum excitation gas pressure is determined according to the target energy conversion threshold and the mapping relationship table.

5. The method according to claim 4, characterized in that The step of determining the target minimum excitation pressure according to the target energy conversion threshold and the mapping relationship table includes: Taking the target energy conversion threshold as a query condition, determining whether the target energy conversion threshold exists in the mapping relationship table; In response to the target energy conversion threshold existing in the mapping relationship table, determining a minimum excitation gas pressure mapped with the target energy conversion threshold as the target minimum excitation gas pressure; In response to the target energy conversion threshold not existing in the mapping relationship table, determining a first energy conversion threshold from the mapping relationship table, the first energy conversion threshold being adjacent to the target energy conversion threshold and greater than the target energy conversion threshold; A first minimum excitation gas pressure mapped to the first energy conversion threshold is determined as the target minimum excitation gas pressure.

6. The method according to claim 5, characterized in that The method further comprises: In response to the target energy conversion threshold not existing in the mapping relationship table, determining a second energy conversion threshold and a third energy conversion threshold; Determining a second minimum excitation gas pressure mapped to the second energy conversion threshold, and a third minimum excitation gas pressure mapped to the third energy conversion threshold; The target minimum excitation gas pressure is obtained according to the second minimum excitation gas pressure and the third minimum excitation gas pressure.

7. The method according to claim 6, characterized in that The step of obtaining the target minimum excitation pressure according to the second minimum excitation pressure and the third minimum excitation pressure includes: performing an interpolation operation on the second minimum excitation pressure and the third minimum excitation pressure to obtain the target minimum excitation pressure; or, An average operation is performed on the second minimum excitation gas pressure and the third minimum excitation gas pressure to obtain the target minimum excitation gas pressure.

8. A geological exploration device, characterized in that: The device comprises: An acquisition module, used to acquire surface geological information of the detection area, wherein the surface geological information at least includes soil layer thickness, elastic modulus, Poisson's ratio and water content; A prediction module, used for predicting a target energy conversion threshold corresponding to the detection area based on the surface geological information; A determination module, used to determine a target minimum excitation gas pressure corresponding to the controllable shock source according to the target energy conversion threshold; A controllable shock source, used for launching shock bombs at the target point in the detection area at a working excitation air pressure greater than the minimum excitation air pressure of the target, so as to excite body wave signals; An acquisition module, used for acquiring seismic gather data corresponding to the body wave signal, and performing inversion operation based on the seismic gather data to generate geological structure imaging data of the detection area; The target energy conversion threshold is determined using the following formula: K = D k1 (1- q ) k2 ln( E (0.5+ r )) in, K is the target energy conversion threshold, k 1 and k 2 is the calibration value, D is the thickness of the soil layer, q is the moisture content, E is the elastic modulus, r is the Poisson's ratio.

9. The device according to claim 8, characterized in that The acquisition module is also used The reflected signal or scattered signal of the body wave signal is collected by the distributed detectors in the detection area to obtain the seismic gather data.

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