Method for determining geologic structure of earth-rock mixture slope

Abstract

The invention discloses a method for determining a geologic structure of a soil-rock mixture slope, and relates to the field of geotechnical engineering. The method comprises the following steps: generating a two-dimensional micro-motion visual S-wave velocity profile of a to-be-determined earth-rock aggregate slope, and extracting structures of a plurality of boulders and geological information of a foundation covering surface; digging pits near all the micro-motion exploration lines for exploration and photographing to obtain a soil-rock mixture profile picture, performing image processing to obtain a soil-rock structure in the soil-rock mixture profile picture, and determining the soil-rock structure and the structures of the plurality of boulders as rock-soil structures; drilling is conducted on all the micro-motion exploration lines to determine the base covering face position and the rock-soil body characteristics, and the base covering face position, the rock-soil body characteristics and the geometric boundary are determined as the base covering face form; and under the same coordinate scale, carrying out spatial positioning and synthesis on the rock-soil structure of the soil-rock mixture side slope and the form of the base covering surface to obtain the geologic structure of the soil-rock mixture side slope. The method improves the determination precision of the geologic structure of the earth-rock mixture slope.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of geotechnical engineering, in particular to a method for determining the geological structure of a soil-rock mixture slope. BACKGROUND

[0002] As a special geotechnical body, the soil-rock mixture refers to a complex geological material composed of fine-grained soil and high-strength block stones since the Quaternary period, mainly formed by residual deposits, collapsed deposits and alluvial deposits. Soil-rock mixture slopes are widely distributed in mountainous areas and are the main carriers of geological disasters such as landslides and debris flows. Since the soil-rock mixture slope is a comprehensive product of complex natural environment, it has obvious nonlinear characteristics of uncertainty, irregularity and discontinuity, and it is difficult to describe and analyze it using traditional techniques and methods based on linear analysis. Therefore, it is of great significance to further study the stability of soil-rock mixture slopes by determining the real geological structure of soil-rock mixture, studying the characteristics of soil, stone and base cover.

[0003] At present, in the stability analysis and calculation of soil-rock mixture slopes, the soil-rock mixture is generally regarded as a homogeneous geotechnical material, and the differences in structural and mechanical properties of soil and stone in the soil-rock mixture are rarely considered, resulting in obvious differences between the calculation results and the actual situation. In addition, researchers have studied the internal micro-distribution characteristics of soil-rock mixture using digital image processing technology, but this is limited to small-scale sections such as push-shear and compression-shear, and cannot obtain information about large boulders in the slope, making it difficult to meet the large-scale research requirements of slope engineering. Therefore, the determination accuracy of the geological structure of soil-rock mixture slopes is low. SUMMARY

[0004] Therefore, it is necessary to provide a method for determining the geological structure of a soil-rock mixture slope to solve the above technical problems. The method can improve the determination accuracy of the geological structure of a soil-rock mixture slope.

[0005] The present application adopts the following technical solutions: The present application provides a method for determining the geological structure of a soil-rock mixture slope, comprising: At least two micro-geophysical exploration lines are arranged on the surface of the soil-rock mixture slope to be determined, and micro-geophysical data is collected along all the micro-geophysical exploration lines to obtain the original record of each micro-geophysical exploration line. The original record includes multiple observation points and the corresponding micro-geophysical data of the observation points. For each micro-geophysical exploration line, based on the original record of the micro-geophysical exploration line, a two-dimensional micro-geophysical S-wave velocity profile of the soil-rock mixture slope to be determined is generated, and geological information of multiple boulders and base cover is extracted from all two-dimensional micro-geophysical S-wave velocity profiles. The structure of the boulder includes the size and position of the boulder; the geological information of the base cover includes the geometric boundary of the base cover. The trenching exploration is performed on all the micro-geophysical exploration lines, and a plurality of soil-rock mixture profile pictures are obtained, the soil-rock structure in each soil-rock mixture profile picture is obtained through image processing, and the rock-soil structure of the soil-rock mixture slope to be determined is determined based on the soil-rock structure obtained from the plurality of soil-rock mixture profile pictures and the structure of a plurality of boulders. The base-cover surface position and the rock-soil body characteristics of the soil-rock mixture slope to be determined are determined according to the drilling results at a plurality of positions on all the micro-geophysical exploration lines, and the base-cover surface position, the rock-soil body characteristics and the geometric boundary are determined as the base-cover surface form. The rock-soil structure and the base-cover surface form are spatially positioned and synthesized under the same coordinate scale to obtain the geological structure of the soil-rock mixture slope to be determined.

[0006] Preferably, two micro-geophysical exploration lines are arranged on the surface of the soil-rock mixture slope to be determined, the two micro-geophysical exploration lines include an A micro-geophysical exploration line and a B micro-geophysical exploration line, the A micro-geophysical exploration line is a longitudinal profile line of the soil-rock mixture slope, and the B micro-geophysical exploration line is a transverse profile line of the soil-rock mixture slope.

[0007] Preferably, the micro-geophysical data is collected along all the micro-geophysical exploration lines respectively to obtain the original record of each micro-geophysical exploration line, and the collection specifically includes the following steps. For any micro-geophysical exploration line, a plurality of observation points are arranged on the micro-geophysical exploration line. The micro-geophysical data is collected at the fixed frequency at the plurality of observation points on the micro-geophysical exploration line. The micro-geophysical data collected at the plurality of observation points on the micro-geophysical exploration line is determined as the original record of the micro-geophysical exploration line.

[0008] Preferably, based on the original record of the micro-geophysical exploration line, a two-dimensional micro-geophysical apparent S-wave velocity profile of the soil-rock mixture slope to be determined is generated, and the generation specifically includes the following steps. For each observation point on the micro-geophysical exploration line, the micro-geophysical data of the observation point is converted into SPAC format data. Based on the SPAC format data of the observation point, a waveform graph is drawn, and the noise interference section in the waveform graph is removed; the horizontal axis of the waveform graph is time, and the vertical axis is the amplitude of the micro-geophysical signal. Based on all the waveform graphs with the noise interference removed on the micro-geophysical exploration line, a two-dimensional micro-geophysical apparent S-wave velocity profile for geological interpretation is constructed.

[0009] Preferably, the density of the trenching exploration is greater than or equal to one-tenth of the length of the micro-geophysical exploration line.

[0010] The application provides a device for determining the geological structure of a soil-rock mixture slope, which comprises: The collection module is used for arranging at least two micro-oscillation exploration lines on a surface of a soil-rock mixture slope to be determined, collecting micro-oscillation data along all the micro-oscillation exploration lines respectively, and obtaining original records of each micro-oscillation exploration line; the original records include a plurality of observation points and micro-oscillation data corresponding to the observation points; The generation module is used for generating a two-dimensional micro-oscillation apparent S-wave velocity profile of the soil-rock mixture slope to be determined based on the original records of each micro-oscillation exploration line, and extracting structural information of a plurality of boulders and geological information of a base cover from all the two-dimensional micro-oscillation apparent S-wave velocity profiles; the structural information of the boulders includes sizes and positions of the boulders; and the geological information of the base cover includes geometric boundaries of the base cover. The excavation pit exploration module is used for performing excavation pit explorations on all the micro-oscillation exploration lines and taking photos, obtaining a plurality of soil-rock mixture profile pictures, performing image processing on each soil-rock mixture profile picture, obtaining soil-rock structures in the soil-rock mixture profile pictures, and determining a geotechnical structure of the soil-rock mixture slope to be determined based on the soil-rock structures obtained from the plurality of soil-rock mixture profile pictures and the structural information of the plurality of boulders. The drilling module is used for determining a base cover position and a geotechnical body characteristic of the soil-rock mixture slope to be determined according to results of drilling at a plurality of positions on all the micro-oscillation exploration lines, and determining the base cover position, the geotechnical body characteristic, and the geometric boundaries as a base cover form. The determination module is used for spatially positioning and synthesizing the geotechnical structure and the base cover form on a same coordinate scale to obtain a geological structure of the soil-rock mixture slope to be determined.

[0011] The present application provides a computer readable storage medium, the storage medium stores a computer program, the computer program is executed by a processor to realize the determination method of the soil-rock mixture slope geological structure.

[0012] The present application provides a computer device, including a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executes the program to realize the determination method of the soil-rock mixture slope geological structure.

[0013] The above-mentioned at least one technical scheme adopted by the present application can achieve the following beneficial effects: The method for determining the geological structure of the soil-rock mixture slope provided by the present application comprises the following steps: arranging a plurality of micro-oscillation exploration lines on the surface of the soil-rock mixture slope to be determined; performing micro-oscillation detection, drilling and pit exploration on each micro-oscillation exploration line to obtain the rock-soil structure and the base-cover surface form; and solving the defects that the existing single technology cannot effectively obtain the geological structure information of the soil, stone and base-cover surface in the soil-rock mixture, and obtaining the geological structure of the soil-rock mixture slope to be determined by spatial positioning and synthesis of the rock-soil structure and the base-cover surface form under the same coordinate scale. The present application combines micro-oscillation exploration, drilling and pit exploration, and can effectively explore the large boulders, gravel and base-cover surface form in the soil-rock mixture slope. The method can improve the determination accuracy of the geological structure of the soil-rock mixture slope. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the present application. In the drawings: Figure 1 A flowchart of the method for determining the geological structure of the soil-rock mixture slope provided by the present application; Figure 2 A schematic diagram of the arrangement of the micro-oscillation exploration line provided by the present application; Figure 3 The micro-oscillation exploration line B micro-oscillation exploration line micro-oscillation measured dispersion curve diagram provided by the present application, wherein (a) is the micro-oscillation exploration line B micro-oscillation exploration line micro-oscillation measured dispersion curve diagram of 1 observation point, and (b) is the micro-oscillation exploration line B micro-oscillation exploration line micro-oscillation measured dispersion curve diagram of 2 observation points; Figure 4 The pit exploration profile photo and the digital image processing result diagram provided by the present application, wherein (a) is the pit exploration profile photo, and (b) is the digital image processing result diagram; Figure 5 The S-wave velocity profile and the interpreted geological profile diagram of the micro-oscillation exploration line B provided by the present application; Figure 6 The principle diagram of the method for determining the geological structure of the soil-rock mixture slope provided by the present application; Figure 7 The schematic diagram of the device for determining the geological structure of the soil-rock mixture slope provided by the present application; Figure 8 The schematic diagram of the computer equipment for implementing the method for determining the geological structure of the soil-rock mixture slope provided by the present application. DETAILED DESCRIPTION

[0015] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0016] Devices such as desktop computers, servers, and laptops are capable of executing the present invention. For ease of explanation, the following description will focus on servers as the executing entity.

[0017] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of a method for determining the geological structure of a soil-rock composite slope according to the present invention, which specifically includes the following steps: S101: At least two micro-motion exploration lines are laid out on the surface of the slope of the soil-rock mixture to be determined, and micro-motion data are collected along all micro-motion exploration lines to obtain the original record of each micro-motion exploration line; the original record includes multiple observation points and the micro-motion data corresponding to the observation points.

[0019] In an exemplary embodiment, two micro-motion exploration lines are laid out on the surface of the soil-rock composite slope to be determined. The two micro-motion exploration lines include micro-motion exploration line A and micro-motion exploration line B. Micro-motion exploration line A is the longitudinal profile of the soil-rock composite slope, and micro-motion exploration line B is the transverse profile of the soil-rock composite slope.

[0020] In an exemplary embodiment, micro-motion data is collected along all micro-motion exploration lines to obtain the original record of each micro-motion exploration line. Specifically, this includes: setting multiple observation points on any micro-motion exploration line; collecting micro-motion data at multiple observation points on the micro-motion exploration line at a fixed frequency; and determining the micro-motion data collected at multiple observation points on the micro-motion exploration line as the original record of the micro-motion exploration line.

[0021] Specifically, such as Figure 2 As shown, two micro-motion exploration lines, A micro-motion exploration line (2) and B micro-motion exploration line (3), are laid out on the surface (1) of the soil-rock mixture slope to be determined. The A micro-motion exploration line is the longitudinal profile of the slope, and the B micro-motion exploration line is the transverse profile. The A micro-motion exploration line is along the central axis of the area to be determined and should have a certain length to completely cover the area to be determined. In one embodiment of the present invention, the A micro-motion exploration line is about 75m long and the B micro-motion exploration line is about 70m long.

[0022] Micro-oscillation detection is carried out along the A micro-oscillation exploration line (2) and the B micro-oscillation exploration line (3) respectively, and the micro-oscillation data acquisition is carried out by using the MTKV-1C micro-oscillation survey instrument system. The micro-oscillation survey instrument system is composed of a 2Hz pick-up instrument (velocity type, vertical component) and a Datamark LS-8800 type recorder. The data of each observation point is independently acquired, the synchronization and time correction between the observation points are automatically realized by receiving the GPS satellite signal, and the sampling frequency of the micro-oscillation data is 100Hz. The original records of the A micro-oscillation detection line and the B micro-oscillation exploration line are obtained.

[0023] S102: For each micro-oscillation exploration line, based on the original record of the micro-oscillation exploration line, a two-dimensional micro-oscillation apparent S-wave velocity profile of the soil-rock mixture slope to be determined is generated, and geological information of the structure of the isolated stone and the base cover is extracted from all two-dimensional micro-oscillation apparent S-wave velocity profiles. The structure of the isolated stone includes the size and position of the isolated stone; the geological information of the base cover includes the geometric boundary of the base cover.

[0024] In an exemplary embodiment, based on the original record of the micro-oscillation exploration line, the two-dimensional micro-oscillation apparent S-wave velocity profile of the soil-rock mixture slope to be determined is generated, specifically including: for each observation point on the micro-oscillation exploration line, converting the micro-oscillation data of the observation point into SPAC format data; drawing a waveform diagram based on the SPAC format data of the observation point, and removing the noise interference section in the waveform diagram; the horizontal axis of the waveform diagram is time, and the vertical axis is the amplitude of the micro-oscillation signal; based on all the waveform diagrams with noise interference removed on the micro-oscillation exploration line, a two-dimensional micro-oscillation apparent S-wave velocity profile for geological interpretation is constructed.

[0025] Specifically, the original records obtained by the A micro-oscillation exploration line and the B micro-oscillation exploration line are converted into SPAC data processing format, waveform diagrams are drawn, data sections obviously disturbed by site noise are removed, measured dispersion curves of each detection point are obtained, and then a two-dimensional micro-oscillation apparent S-wave velocity profile for geological interpretation is obtained. In an embodiment of the present application, Figure 3 The measured dispersion curve diagram of observation points 1 and 2 in the B micro-oscillation exploration line provided by the present application. Figure 3 The horizontal coordinate of the (a) graph in and the horizontal coordinate of the (b) graph in are both frequency, and the unit is hz. Figure 3 The vertical coordinate of the (a) graph in and the vertical coordinate of the (b) graph in are both phase velocity, and the unit is km / s.

[0026] The data sections obviously disturbed by site noise are mainly removed by using the energy analysis method, which mainly marks strong noise points by calculating the amplitude mean ratio of short-time window and long-time window when the ratio exceeds the threshold value. The removal method is to directly remove the sampling points marked as strong noise.

[0027] S103: carry out the excavation trench exploration on all the micro- exploration lines, take photos to obtain a plurality of soil-rock mixture profile pictures, carry out image processing on each soil-rock mixture profile picture to obtain the soil-rock structure in the soil-rock mixture profile picture, and determine the rock-soil structure of the soil-rock mixture slope to be determined based on the soil-rock structures obtained from the plurality of soil-rock mixture profile pictures and the structures of the plurality of boulders.

[0028] The excavation trench exploration is carried out near the exploration line, the trench exploration should have a certain length, and the trench should be excavated to the soil-rock mixture to the stable bedrock as far as possible, and the trench profile is excavated at the observation points 1 and 2 under the B micro- exploration, as shown in (a) of FIG. Figure 4 The digital photograph is taken for the profile, the digital photo is processed to obtain the structure information of the soil, stone and other units in the profile, as shown in (b) of FIG. Figure 4

[0029] The trench is consistent with the micro- exploration line, the length of the trench should be not less than 1 / 10 of the length of the exploration line, and it is recommended that the slope direction should be uniformly distributed at the slope foot, the middle of the slope and the top of the slope. It is recommended that the trench of the transverse exploration line should be excavated on the left and right sides and in the middle of the slope.

[0030] S104: determine the base-cover position and the rock-soil body characteristics of the soil-rock mixture slope to be determined according to the results of the drilling at a plurality of positions on all the micro- exploration lines, and determine the base-cover position, the rock-soil body characteristics and the geometric boundary as the base-cover form.

[0031] In an exemplary embodiment, the density of the excavation trench exploration is greater than or equal to 1 / 10 of the length of the micro- exploration line.

[0032] Drilling exploration is carried out on the A micro- exploration line and the B micro- exploration line respectively, the drilling density is arranged according to the actual operation accuracy requirement, the drilling should penetrate the base-cover by a certain depth, the base-cover position and the rock-soil body characteristics of the soil-rock mixture are determined by drilling, the micro- exploration results are verified according to the drilling data, the base-cover and the geological structure information such as the large boulder in the soil-rock mixture slope are obtained, and the geological profile explained by the B micro- exploration line is as shown in FIG. Figure 5

[0033] S105: spatially position and synthesize the rock-soil structure and the base-cover form under the same coordinate scale to obtain the geological structure of the soil-rock mixture slope to be determined.

[0034] Under the unified coordinate scale, the large boulder, the soil-rock structure, the base-cover form are spatially positioned and synthesized to obtain the geological structure model of the soil-rock mixture slope.

[0035] In the application of the method for determining the geological structure of the soil-rock mixture slope provided by the application, the base-cover form can not be determined according to the soil-rock structure. Figure 1 ​​The sequence of each step shown is executed, and the execution sequence of each specific step can be determined as needed, and the present application does not limit this.

[0036] In addition, in one or more embodiments of the present application, there is provided a method for determining the geological structure of a soil-rock mixture slope as shown Figure 6 The principle diagram of the method for determining the geological structure of a soil-rock mixture slope is shown. As shown Figure 6 As shown, first, the soil-rock mixture slope is subjected to microseismic detection to obtain the size and position of a plurality of boulders and the base cover surface; second, pit exploration is performed, and photographs and image processing are performed to obtain the soil-rock structure, and the soil-rock structure and the plurality of boulder structures are determined as the rock-soil structure; third, the interface of the soil-rock mixture slope is verified by drilling, and the interface verification result and the geometric boundary are determined as the base cover surface form; and finally, the rock-soil structure and the base cover surface form are determined as the real geological structure.

[0037] The above is the method for determining the geological structure of a soil-rock mixture slope provided by one or more embodiments of the present application, based on the same idea, the present application also provides a corresponding device for determining the geological structure of a soil-rock mixture slope, as shown Figure 7

[0038] Figure 7 A device for determining the geological structure of a soil-rock mixture slope provided by the present application is shown in the schematic diagram, which comprises: The acquisition module 701 is configured to arrange at least two microseismic exploration lines on the surface of the soil-rock mixture slope to be determined, and collect microseismic data along all the microseismic exploration lines to obtain the original record of each microseismic exploration line; the original record includes a plurality of observation points and the microseismic data corresponding to the observation points.

[0039] The generation module 702 is configured to, for each microseismic exploration line, generate a two-dimensional microseismic apparent S-wave velocity profile of the soil-rock mixture slope to be determined based on the original record of the microseismic exploration line, and extract the geological information of the base cover surface and the structure of a plurality of boulders from all the two-dimensional microseismic apparent S-wave velocity profiles; the structure of the boulders includes the size and position of the boulders; the geological information of the base cover surface includes the geometric boundary of the base cover surface.

[0040] The pit exploration module 703 is configured to perform pit exploration on all the microseismic exploration lines and take photographs to obtain a plurality of soil-rock mixture profile pictures, and perform image processing on each soil-rock mixture profile picture to obtain the soil-rock structure in the soil-rock mixture profile picture, and determine the rock-soil structure of the soil-rock mixture slope to be determined based on the soil-rock structure obtained from the plurality of soil-rock mixture profile pictures and the structure of the plurality of boulders.

[0041] ​The drilling module 704 is configured to determine the base-cover surface position and the rock-soil body characteristics of the soil-rock mixture slope to be determined according to the drilling results at multiple positions on all micro-geophysical exploration lines, and determine the base-cover surface position, the rock-soil body characteristics and the geometric boundary as the base-cover surface form.

[0042] The determining module 705 is configured to spatially position and synthesize the rock-soil structure and the base-cover surface form to obtain the geological structure of the soil-rock mixture slope to be determined.

[0043] The specific limitations of the device for determining the geological structure of the soil-rock mixture slope can be seen in the limitations of the method for determining the geological structure of the soil-rock mixture slope, which will not be repeated here. Each module in the device for determining the geological structure of the soil-rock mixture slope can be realized by software, hardware and a combination thereof, in whole or in part. The above-mentioned modules can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory in the computer device in software form, so as to be called and executed by the processor to perform the operations corresponding to each module.

[0044] The application further provides a computer readable storage medium, which stores a computer program, and the computer program can be used to execute the above-mentioned Figure 1 The application further provides a device for determining the geological structure of a soil-rock mixture slope.

[0045] The application further provides a computer readable storage medium, which stores a computer program, and the computer program can be used to execute the above-mentioned Figure 3 The structure of the computer device is shown in the structure diagram of the computer device. Figure 8 As shown in the structure diagram of the computer device, at the hardware level, the computer device includes a processor, an internal bus, a network interface, a memory and a non-volatile memory, and can further include other hardware required by the business. The processor reads the corresponding computer program from the non-volatile memory into the memory and then runs to realize the above-mentioned Figure 1 The application further provides a device for determining the geological structure of a soil-rock mixture slope.

[0046] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the above-mentioned embodiments of the methods. In the embodiments of the present application, any reference to memory, storage, database or other medium can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0047] The technical features of the above embodiments can be combined in any way. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combination of the technical features does not exist, it should be considered as the scope of the present application.

Claims

1. A method for determining a geological structure of a soil-rock mixture side slope, characterized by, The method comprises the following steps: a plurality of micro-oscillation exploration lines are arranged on the surface of the soil-rock mixture slope to be determined, micro-oscillation data is collected along all the micro-oscillation exploration lines respectively, and original records of each micro-oscillation exploration line are obtained; the original records comprise a plurality of observation points and micro-oscillation data corresponding to the observation points; for each micro-oscillation exploration line, a two-dimensional micro-oscillation apparent S-wave velocity profile of the soil-rock mixture slope to be determined is generated based on the original records of the micro-oscillation exploration line, and geological information of a plurality of isolated stones and a base cover is extracted from all the two-dimensional micro-oscillation apparent S-wave velocity profiles; the structure of the isolated stones comprises the size and position of the isolated stones; the geological information of the base cover comprises geometric boundaries of the base cover; pit trench exploration is performed on all the micro-oscillation exploration lines, and a plurality of soil-rock mixture profile pictures are obtained; for each soil-rock mixture profile picture, image processing is performed to obtain soil-rock structures in the soil-rock mixture profile picture, and the soil-rock structures obtained based on the plurality of soil-rock mixture profile pictures and the structure of the plurality of isolated stones are used to determine a rock-soil structure of the soil-rock mixture slope to be determined; the base cover position and rock-soil body characteristics of the soil-rock mixture slope to be determined are determined according to the results of drilling at a plurality of positions on all the micro-oscillation exploration lines, and the base cover position, the rock-soil body characteristics and the geometric boundaries are determined as a base cover form; the rock-soil structure and the base cover form are spatially positioned and synthesized under the same coordinate scale to obtain a geological structure of the soil-rock mixture slope to be determined.

2. The method of claim 1, wherein, The soil-rock mixture slope to be determined is arranged with two micro-oscillation exploration lines, which comprise an A micro-oscillation exploration line and a B micro-oscillation exploration line; the A micro-oscillation exploration line is a longitudinal profile line of the soil-rock mixture slope, and the B micro-oscillation exploration line is a transverse profile line of the soil-rock mixture slope.

3. The method of claim 1, wherein, The micro-oscillation data is collected along all the micro-oscillation exploration lines respectively to obtain the original records of each micro-oscillation exploration line, and specifically comprises the following steps: for any micro-oscillation exploration line, a plurality of observation points are arranged on the micro-oscillation exploration line; micro-oscillation data is collected at the observation points on the micro-oscillation exploration line at a fixed frequency; the micro-oscillation data collected at the observation points on the micro-oscillation exploration line is determined as the original records of the micro-oscillation exploration line.

4. The method of claim 1, wherein, The two-dimensional micro-oscillation apparent S-wave velocity profile of the soil-rock mixture slope to be determined is generated based on the original records of the micro-oscillation exploration line, and specifically comprises the following steps: for each observation point on the micro-oscillation exploration line, the micro-oscillation data of the observation point is converted into SPAC format data; a waveform graph is drawn based on the SPAC format data of the observation point, and noise interference segments in the waveform graph are removed; the horizontal axis of the waveform graph is time, and the vertical axis is the amplitude of the micro-oscillation signal; based on all the waveform graphs with noise interference removed on the micro-oscillation exploration line, a two-dimensional micro-oscillation apparent S-wave velocity profile for geological interpretation is constructed.

5. The method of claim 1, wherein, The density of the pit trench exploration is greater than or equal to one-tenth of the length of the micro-oscillation exploration line.

Images