Method for comprehensively evaluating effective reinforcement depth of high-fill dynamic compaction foundation in mountainous area based on surface wave inversion shear wave velocity and borehole imaging

Abstract

The invention relates to the technical field of foundation detection in engineering technology, and discloses a method for comprehensively evaluating the effective reinforcement depth of a highly-filled dynamic compaction foundation in a mountainous area based on a surface wave inversion shear wave velocity and drilling imaging, and the effective reinforcement depth of the dynamic compaction foundation is determined by comprehensively using the surface wave inversion shear wave velocity and a drilling imaging detection result. Carrying out field surface wave detection by utilizing a surface wave instrument, dividing a mountainous area high-fill dynamic compaction foundation layer, and analyzing the effective reinforcement depth of dynamic compaction; on the basis that pile foundation drilling is utilized, the drilling imaging technology is adopted to visually reproduce the distribution condition of soil particles and pores in a soil body in a pile hole; the area occupied by soil particles and the area occupied by pores in the unit area are obtained through the image analysis and processing technology, the porosity ratio is calculated, and therefore the compaction coefficient and the compaction degree of backfill soil are quantitatively evaluated, and the dynamic compaction effective reinforcement depth is obtained through analysis; the surface wave instrument and the drilling imager are combined to comprehensively detect and evaluate the reinforcing effect of the high-fill dynamic compaction foundation in the mountainous area, and the result is accurate and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation detection in engineering technology, and particularly to a method for comprehensively evaluating the effective reinforcement depth of a dynamic compaction foundation of high fill in mountainous areas based on surface wave inversion of shear wave velocity and borehole imaging. Background Technique

[0002] At present, due to the large volume and high height of the high fill project in mountainous areas, sandstone, mudstone gravel, block stone soil, etc. are often used as filling materials for stacking by cutting peaks and filling valleys. Using block stone backfill can adapt to different foundation geological conditions, and for mountainous projects, local materials can be used, and there are relatively rich material sources, which has significant advantages in terms of economic cost. However, due to the inconsistent soil source situation of the project, the filling soil quality is relatively complex, and the gravel particle size is large, resulting in poor uniformity and large variability of the high fill foundation in mountainous areas, which brings great difficulties to the quality detection of the foundation reinforcement effect after dynamic compaction. The current detection and evaluation work of the foundation density and reinforcement effect after dynamic compaction mainly includes the dynamic penetration method, the bearing plate method, the surface wave method, etc.

[0003] The propagation speed of Rayleigh surface wave is closely related to the physical properties of the foundation rock and soil mass. The Rayleigh surface wave velocities detected in different depth ranges of the foundation medium are different. By analyzing the received Rayleigh surface wave signals, the change of the surface wave propagation speed with depth is analyzed to obtain the shear wave velocity structure of the foundation, and then the relevant properties such as the compaction degree, stratification situation, and uniformity of the foundation are inferred. In a relatively dense stratum, the propagation speed of Rayleigh surface wave is relatively fast; in a loose stratum, the propagation speed is relatively slow. The traditional density measurement methods mainly include the dynamic penetration method, the static penetration method, etc., but these methods have higher detection costs and longer time consumption. The Rayleigh surface wave method for detecting the foundation has the advantages of wide detection range, fast test speed, and non-destructive detection, etc., but the foundation density and effective reinforcement depth obtained only by surface wave measurement are not intuitive and vivid enough, and lack quantitative evaluation. Therefore, how to combine surface wave exploration means with an efficient and intuitive direct observation method to detect the foundation density and determine the effective reinforcement depth of the dynamic compaction foundation is an urgent problem to be solved in the current detection field. Summary of the Invention

[0004] (I) Technical Problems to be Solved Aiming at the deficiencies of the prior art, the present invention provides a method for comprehensively evaluating the effective reinforcement depth of a dynamic compaction foundation of high fill in mountainous areas based on surface wave inversion of shear wave velocity and borehole imaging, which has the advantages of low detection cost, high detection efficiency, intuitive and vivid detection results, etc., and solves the problems of higher detection cost and longer time consumption.

[0005] (II) Technical Solutions To achieve the above objectives of low detection cost, high detection efficiency, and intuitive and vivid detection results, the present invention provides the following technical solution: A method for comprehensively evaluating the effective reinforcement depth of a dynamic compaction foundation in a mountainous high fill area based on surface wave inversion shear wave velocity and borehole imaging, the specific steps are as follows: S1. Divide the strata of the dynamic compaction foundation in the mountainous high fill area, select a dynamic compaction test area and arrange Rayleigh wave detection working survey lines; S2. Apply an excitation source to the dynamic compaction test area, and use surface wave analysis software to process the surface wave test results to obtain the variation curve of the surface wave velocity with depth; S3. Fit the processed surface wave curve and perform inversion processing to obtain the Rayleigh wave shear wave velocity Vi of each layer at different depths of the strata after dynamic compaction, and analyze the effective reinforcement depth range of the tested foundation; S4. Judge the compactness of the soil layers at different depths of the dynamic compaction foundation in the mountainous high fill area according to the wave velocity Vi of each layer of Rayleigh wave, and initially obtain the effective reinforcement depth range by analyzing the inflection points of the wave velocity curve change; S5. Use the building pile foundation pile hole without taking shaft protection measures, and use a borehole imager to detect the strata conditions at different depths in the pile hole, and intercept typical images of different strata cross-sections at regular intervals along the pile depth; S6. Analyze the borehole images of the soil layers near the effective reinforcement depth range obtained in S4, and use ImageJ or other image processing and analysis software to calculate the void ratio e of soil particles and pores per unit area; S7. Collect backfill soil samples from the site for indoor geotechnical tests, and use the pycnometer method, drying method, and compaction method to respectively measure the specific gravity of soil particles Gs, water content ω, and maximum dry density , according to the void ratio e, specific gravity of soil particles Gs, water content , through the following relational formula, the dry density of the soil mass is obtained by conversion , according to the ratio of the measured dry density value of the compacted fill to the maximum dry density, the compaction coefficient is obtained ; S8. According to the compaction coefficient λc, combined with the variation curve of the surface wave detection wave velocity of the dynamic compaction foundation along the depth direction, the effective reinforcement depth of the dynamic compaction is finally obtained; In S5, the strata images at different depths in the pile hole are photographed by an image acquisition device.

[0006] Preferably, in S2, a hammer strike is used as the excitation source, and it is excited by manually striking the anvil. Each point on each survey line needs to successfully excite the source twice for two measurement acquisitions; In S6, the calculation formula for the void ratio e is: e = Sv / Ss, where e is the void ratio, Sv is the area of the pore part, and Ss is the area of the soil particle part; In S7, the dry density of the soil mass The calculation formula is as follows: ; Compaction coefficient The calculation formula is as follows: Wherein, e is the void ratio, Gs is the specific gravity of soil particles, is the moisture content, is the density of water, is the maximum dry density of the soil mass, is the dry density of the in-situ soil mass, is the compaction coefficient.

[0007] Preferably, the image acquisition device includes a walking frame, a top plate is fixedly installed on the top of the walking frame, a winding roller is arranged on the top of the top plate, a cable is wound on the surface of the winding roller, a camera assembly is fixedly installed at the bottom end of the cable, a rotation driving member is connected to the left end of the winding roller, a friction assembly is arranged between the rotation driving member and the winding roller, a support assembly is fixedly installed on the surface of the camera assembly, and a storage assembly is fixedly installed in the middle of the walking frame.

[0008] Preferably, fixing rings are fixedly installed at both ends of the winding roller, two supports are fixedly installed on the top of the top plate, the fixing rings are rotatably connected to the supports, a driving shaft is fixedly installed at the center of the left end of the winding roller, the cable is wound on the surface of the winding roller, and its top end is fixedly penetrated and fixed on the winding roller, passes through the winding roller and the right fixing ring, a borehole imager is fixedly installed at the top end of the cable, the borehole imager is fixedly installed on the top of the top plate, a through hole is penetrated and opened at the center of the top of the top plate, the cable passes through the through hole, a fixed pulley is arranged on the top of the top plate, and the cable is attached to the surface of the fixed pulley.

[0009] Preferably, the camera assembly includes a cylindrical shell fixedly installed at the bottom end of the cable, a mounting seat is rotatably connected to the inner bottom end of the cylindrical shell, a camera body is fixedly installed at the bottom of the mounting seat, a ring gear one is fixedly installed at the top of the mounting seat, a motor one is fixedly installed on the inner wall of the cylindrical shell, a driving gear one is fixedly installed at the output end of the motor one, the driving gear one meshes with the ring gear one, the camera body is connected with a power connection column, the power connection column is fixedly penetrated and fixed at the center of the mounting seat, a docking sleeve is fixedly installed on the inner wall of the cylindrical shell, and the power connection column and the docking sleeve are rotatably connected.

[0010] Preferably, the rotation driving member includes a second motor fixedly installed on the top of the top plate. The output end of the second motor is fixedly installed with a rotating shaft, which is located in front of the driving shaft. The left end surface of the rotating shaft is fixedly installed with a support disc, and a sector-shaped groove is formed through the surface of the support disc. A rotating arm is fixedly installed on the left side of the support disc, and a pushing wheel is fixedly installed on the right side of the other end of the rotating arm. The pushing wheel is located at the front side of the middle of the sector-shaped groove; a cross plate is fixedly installed at the left end of the driving shaft. The surface between every two branches of the cross plate is an arc surface, and the circumferential surface of the support disc is attached to the arc surface. Four avoidance grooves are formed through the side surface of the cross plate in an array, and the avoidance grooves are located in the middle of the branches of the cross plate. During the rotation of the rotating arm following the rotating shaft, the pushing wheel is used to insert into the avoidance groove and push the cross plate to rotate.

[0011] Preferably, the friction assembly includes a guide rod fixedly installed on the fixed ring, which is located directly below the driving shaft. A first sliding ring and a second sliding ring are slidably connected to the guide rod. The first sliding ring and the second sliding ring are sleeved outside the driving shaft. The first sliding ring is located on the right side of the second sliding ring. A first spring is fixedly installed between the first sliding ring and the second sliding ring. A friction plate is fixedly installed on the right side of the first sliding ring, and the friction plate is attached to the left end of the winding roller; a sleeve ring is fixedly installed on the front side of the second sliding ring, and the sleeve ring is sleeved outside the rotating shaft. A sliding bead is fixedly installed on the inner wall of the sleeve ring, and an annular groove is formed on the rotating shaft. The sliding bead is slidably connected to the annular groove; the annular groove is composed of a short arc groove, a long arc groove and two inclined grooves. The short arc groove is located at the top of the rotating shaft, the long arc groove is located at the bottom of the rotating shaft, the long arc groove is located on the left side of the short arc groove, the central angle of the short arc groove is °, the central angle of the long arc groove is °, and the two inclined grooves are respectively communicated between the ends of the short arc groove and the long arc groove.

[0012] Preferably, the support assembly includes a tray fixedly installed on the outer wall of the camera assembly. Six support arms are fixedly arranged on the circumferential surface of the tray. A chute is formed through the top of the support arm. A sliding seat and an extension arm are slidably connected to the chute. Both the sliding seat and the extension arm are U-shaped. The sliding seat is located inside the extension arm. A roller is rotatably connected to the outer end of the extension arm. A connecting rod is fixedly installed at the outer end of the sliding seat. The inner end of the extension arm is slidably connected to the connecting rod. A circular retaining piece is arranged at the outer end of the connecting rod, and the circular retaining piece is located inside the extension arm. A second spring is sleeved outside the connecting rod, and both ends of the second spring are respectively attached to the opposite ends of the sliding seat and the extension arm. A pressure sensor is fixedly installed at the inner end of the extension arm. A sliding column is fixedly installed on the top of the sliding seat. A pushing member is arranged on the top of the tray, and the pushing member is used to drive the sliding seat to slide along the chute.

[0013] Preferably, the pushing member includes a rotating plate attached to the top of the sliding seat. Six inclined frames are fixedly arranged in an array on the side of the rotating plate. The sliding column is slidably connected in the inclined frame. A fixing column is fixedly installed on the top of the tray. A pressing ring is fixedly installed on the top of the fixing column. The pressing ring is attached to the top of the rotating plate and the inclined frame. A speed reducer is fixedly installed on the top of the pressing ring. The output end of the speed reducer is fixedly installed with a motor three. The output end of the speed reducer is fixedly installed with a driving gear two. An annular gear two is fixedly installed on the inner wall of the rotating plate. The driving gear two meshes with the annular gear two. Two counterweight blocks are fixedly installed on the top of the pressing ring. The two counterweight blocks and the speed reducer are arranged in a circumferential array on the pressing ring.

[0014] Preferably, the storage component includes a mounting frame fixedly installed in the middle of the walking frame. Six groups of limiting frames are fixedly arranged in an array at the bottom of the mounting frame. Each group of limiting frames consists of two clamping plates. A cross plate is fixedly installed on the left side of each group of limiting frames. A backing plate is fixedly installed at the left end of the inner side of the cross plate.

[0015] (III) Beneficial effects Compared with the prior art, the present invention provides a method for comprehensively evaluating the effective reinforcement depth of a mountain high-fill dynamic compaction foundation based on surface wave inversion shear wave velocity and borehole imaging, and has the following beneficial effects: 1. This method for comprehensively evaluating the effective reinforcement depth of a mountain high-fill dynamic compaction foundation based on surface wave inversion shear wave velocity and borehole imaging comprehensively uses the surface wave inversion shear wave velocity and borehole imaging detection results to determine the effective reinforcement depth of the dynamic compaction foundation. The surface wave detector is used for on-site surface wave detection to divide the strata of the mountain high-fill dynamic compaction foundation and analyze the effective reinforcement depth of dynamic compaction. On the basis of using pile foundation drilling, the borehole imaging technology is adopted to intuitively reproduce the distribution of soil particles and pores in the soil in the pile hole. And the image analysis and processing technology is used to obtain the areas occupied by soil particles and pores per unit area respectively, calculate the void ratio, so as to quantitatively evaluate the compaction coefficient and density of the backfill soil, and analyze and obtain the effective reinforcement depth of dynamic compaction. Combining the surface wave detector and the borehole imager to comprehensively detect and evaluate the reinforcement effect of the mountain high-fill dynamic compaction foundation, the result is relatively accurate and reliable.

[0016] 2. This method for comprehensively evaluating the effective reinforcement depth of a mountain high-fill dynamic compaction foundation based on surface wave inversion shear wave velocity and borehole imaging drives the driving gear two to rotate through the motor three and the speed reducer, thereby driving the annular gear two, the rotating plate and the inclined frame to rotate, and driving the sliding seat to slide outwards along the sliding groove through the extrusion of the inner wall of the inclined frame on the sliding column; the extension arm is pushed outwards by the spring two, so that the roller is attached to the inner wall of the pile hole to support the camera assembly and keep the camera assembly at the center of the pile hole, ensuring the quality of image acquisition in the pile hole.

[0017] 3. In the method for comprehensively evaluating the effective reinforcement depth of a dynamic compaction foundation of high fills in mountainous areas based on surface wave inversion of shear wave velocity and borehole imaging, during the rotation of the rotating shaft, as the sliding beads slide along the short arc groove, inclined groove, and long arc groove, the collar moves reciprocally left and right, driving the sliding ring two to move reciprocally left and right, adjusting the compression amount of the first spring, thereby adjusting the frictional force between the friction plate and the winding roller, preventing the winding roller from releasing too much cable due to inertia when the pushing wheel separates from the avoidance groove; thus achieving intermittent cable release and facilitating the control of the depth of the camera assembly inserted into the pile hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the propagation velocity of Rayleigh surface waves in the foundation; Figure 2 It is a schematic diagram of the curve of the surface wave test wave velocity varying with depth in the dynamic compaction foundation of high fills in mountainous areas; Figure 3 It is a schematic diagram of the pore and soil particle distribution of the formation cross-section; Figure 4 It is a schematic structural diagram of the image acquisition device proposed by the present invention; Figure 5 It is a three-dimensional structural diagram of the upper side of the top plate in the image acquisition device proposed by the present invention; Figure 6 It is a three-dimensional sectional structural diagram of the camera assembly in the image acquisition device proposed by the present invention; Figure 7 It is a three-dimensional structural diagram of the rotation driving member in the image acquisition device proposed by the present invention; Figure 8 It is a three-dimensional structural diagram of the friction assembly in the image acquisition device proposed by the present invention; Figure 9 It is a top view structural diagram of the support assembly in the image acquisition device proposed by the present invention; Figure 10 It is a three-dimensional exploded structural diagram of the support assembly in the image acquisition device proposed by the present invention; Figure 11 It is a three-dimensional structural diagram of the support assembly in the image acquisition device proposed by the present invention; Figure 12 It is a three-dimensional structural diagram of the support assembly and storage assembly in the image acquisition device proposed by the present invention; Figure 13 It is a three-dimensional structural diagram of the storage assembly in the image acquisition device proposed by the present invention.

[0019] In the figure: 100, traveling frame; 200, top plate; 300, winding roller; 400, cable; 500, camera assembly; 600, rotation driving member; 700, friction assembly; 800, support assembly; 900, storage assembly; 301, fixing ring; 302, support; 303, driving shaft; 401, borehole imager; 402, fixed pulley; 501, cylindrical shell; 502, mounting seat; 503, camera body; 504, first annular gear; 505, first driving gear; 506, first motor; 507, electrical connection post; 508, docking sleeve; 601, second motor; 602, rotating shaft; 603, support disc; 604, rotating arm; 605, pushing wheel; 606, cross plate; 607, avoidance groove; 701, guide rod; 702, first sliding ring; 703, second sliding ring; 704, first spring; 705, friction plate; 706, collar; 707, sliding bead; 708, short arc groove; 709, long arc groove; 710, inclined groove; 801, tray; 802, support arm; 803, chute; 804, sliding seat; 805, extension arm; 806, roller; 807, connecting rod; 808, second spring; 809, pressure sensor; 810, sliding column; 811, rotating plate; 812, inclined frame; 813, fixing column; 814, pressing ring; 815, reducer; 816, third motor; 817, second driving gear; 818, second annular gear; 819, counterweight; 901, mounting frame; 902, limiting frame; 903, cross plate; 904, backing plate. Detailed implementation manners

[0020] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] After dynamic compaction construction, a surface wave detector is used for on-site surface wave detection to divide the strata of the dynamic-compacted foundation of high fills in mountainous areas. Different dynamic compaction areas are selected, and Rayleigh wave detection working lines are arranged in the dynamic compaction test area. In this embodiment, since the thickness of the site fill is approximately 7 - 12 m, each Rayleigh wave detection line uses 12 geophones for reception, with a trace interval of 2 m, and a tape measure is used to determine the positions of the geophones.

[0023] The test uses a hammer strike as the excitation source, which is excited by manually striking an anvil. Each point on each line needs to successfully excite the source twice for two measurement acquisitions to ensure that the measured surface wave waveform is accurate and not interfered by the outside world. A surface wave analysis software is used to process the surface wave test results, eliminating the influence of direct waves and reflected waves in the test results on the true surface wave, and obtaining the variation curve of the surface wave velocity with the depth direction.

[0024] The processed surface wave curve is fitted and inversely processed to obtain the Rayleigh wave shear wave velocity Vi of each layer at different depths of the strata after dynamic compaction, and to analyze the effective reinforcement depth range of the tested foundation by dynamic compaction.

[0025] According to the wave velocity Vi of each layer of Rayleigh wave, the density of soil layers at different depths of the dynamic-compacted foundation of high fills in mountainous areas is judged. The effective reinforcement depth by dynamic compaction is initially obtained by analyzing the inflection points of the wave velocity curve change. The boundary wave velocity of the soil layer at the effective reinforcement depth by dynamic compaction needs to be determined through tests on typical backfill materials at the site. Combining the results of on-site load tests and heavy dynamic penetration tests at the test site, for common high fills in mountainous areas where blocky soils such as sandstone and mudstone generated by excavating the mountain are used as backfill materials, when the foundation wave velocity Vi > (220 - 240) m / s, the soil mass is in a dense state, and the effective reinforcement depth range by dynamic compaction is 8 - 10 m; Combined with the construction process of the building pile foundation drilling, using the building pile foundation holes without taking shaft protection measures, a borehole imager is used to detect the strata conditions at different depths in the pile holes, and typical images of different strata cross-sections are intercepted at certain intervals along the pile depth to visually reproduce the distribution of soil particles and pores in the soil mass at different depths of the pile holes; The borehole images of the soil layers near the effective reinforcement depth by dynamic compaction obtained from the aforementioned on-site Rayleigh surface wave detection are analyzed. Using ImageJ or other image processing and analysis software, the areas Ss and Sv occupied by soil particles and pores respectively per unit area at different depths are obtained, and the void ratio e is calculated: e = Sv / Ss where e is the void ratio, Sv is the area of the pore part, and Ss is the area of the soil particle part.

[0026] Undisturbed soil samples are collected from the site for laboratory geotechnical tests. The specific gravity Gs, water content , and maximum dry density According to the void ratio e, the specific gravity of soil grains Gs, and the water content , the dry density of the soil mass obtained by conversion is calculated through the following relational expression :

[0027] Compaction coefficient is the ratio of the measured dry density value of the compacted fill to the maximum dry density, that is:

[0028] In the above formula: e is the void ratio, Gs is the specific gravity of soil grains, is the water content, is the density of water, is the maximum dry density of the soil mass, is the dry density of the in-situ soil mass, is the compaction coefficient.

[0029] According to the compaction coefficient of the soil layer near the effective reinforcement depth of dynamic compaction obtained by calculation , when the soil layer depth Z is within 8.7 m, is greater than the design requirement of 0.95. Combining with the variation curve of the Rayleigh wave detection wave velocity along the depth direction of the dynamic compaction foundation surface, the effective reinforcement depth of dynamic compaction is finally obtained as 8.7 m.

[0030] Please refer to Figure 1 , waves are generated by knocking with a vibration source. By exciting Rayleigh surface waves on the foundation surface, the propagation speed of Rayleigh surface waves in the foundation varies due to the physical properties of the rock and soil mass. Analyze parameters such as the propagation speed and frequency of the waves. The greater the wave speed, the greater the soil density and the better the dynamic compaction reinforcement effect. Furthermore, analyze the effective depth, reinforcement degree, etc. of the dynamic compaction reinforced foundation to make a judgment.

[0031] Select different dynamic compaction areas, arrange Rayleigh wave detection working survey lines in the dynamic compaction test area. Each Rayleigh wave detection survey line uses 12 geophones for reception, and a tape measure is used to determine the arrangement position of the geophones. In the area where dynamic compaction is completed, survey lines are arranged at different positions according to an offset distance of 5 m and a trace interval of 2 m to measure the dynamic compaction reinforcement effect. The test uses a hammer strike as the excitation source, which is excited by manually knocking on the anvil. Each point on each survey line needs to successfully excite the source twice for two measurement acquisitions to ensure that the measured surface wave waveform is accurate and not interfered by the surrounding construction environment.

[0032] Please refer to Figure 2 , in this embodiment, when the wave speed is Vi > (220 - 240) m / s, it is the effective reinforcement depth range of dynamic compaction.

[0033] Please refer to Figure 3, every 0.5 m along the drilling depth direction, use a borehole imager to take cross-sections of the foundation strata. Calculate the area of the strata cross-section occupied by pores in the typical strata cross-section through ImageJ software, calculate the void ratio e of the strata, take soil samples for geotechnical tests, and calculate the dry density of the strata soil according to the void ratio , calculate the soil compaction coefficient :

[0034]

[0035] Among them, e is the void ratio, Gs is the specific gravity of soil particles, is the moisture content, is the density of water, is the maximum dry density, is the compaction coefficient, is the dry density.

[0036] Please refer to Figure 4 , when taking images of the strata at different depths in the pile hole, use an image acquisition device to acquire images. The image acquisition device includes a walking frame 100. Wheels are provided at the bottom of the walking frame 100 for the walking frame 100 to move on the ground. A top plate 200 is fixedly installed at the top of the walking frame 100. A winding roller 300 is provided at the top of the top plate 200. A cable 400 is wound around the surface of the winding roller 300. A camera assembly 500 is fixedly installed at the bottom end of the cable 400. By winding or releasing the cable 400 through the winding roller 300, the camera assembly 500 can move in the pile hole.

[0037] The left end of the winding roller 300 is connected to a rotation driving member 600. A friction assembly 700 is provided between the rotation driving member 600 and the winding roller 300. The winding roller 300 is driven to rotate intermittently by the rotation driving member 600 to wind or release the cable 400, and the winding roller 300 is prevented from rotating under the action of inertia through the friction of the friction assembly 700 on the winding roller 300. A support assembly 800 is fixedly installed on the surface of the camera assembly 500. A storage assembly 900 is fixedly installed in the middle of the walking frame 100. When the camera assembly 500 is inserted deep into the pile hole, it is supported on the inner wall of the pile hole through the support assembly 800 to keep the camera assembly 500 at the center of the pile hole. After the image acquisition inside the pile hole is completed, the support assembly 800 is supported by the storage assembly 900 for easy storage and to prevent the support assembly 800 from shaking violently during the movement of the walking frame 100.

[0038] Please refer to Figure 5, fixed rings 301 are fixedly installed at both ends of the winding roller 300. Two supports 302 are fixedly installed at the top of the top plate 200. The fixed rings 301 are rotatably connected to the supports 302, and the winding roller 300 is supported by the supports 302. A driving shaft 303 is fixedly installed at the center of the left end of the winding roller 300, and the other end of the driving shaft 303 is connected to the rotational driving member 600.

[0039] The cable 400 is wound around the surface of the winding roller 300, and its top end is fixedly penetrated on the winding roller 300 and passes out from inside the winding roller 300 and the fixed ring 301 on the right side, so as to avoid winding or releasing both ends of the cable 400 simultaneously when the winding roller 300 rotates. A borehole imager 401 is fixedly installed at the top end of the cable 400. The borehole imager 401 is fixedly installed at the top of the top plate 200. A through hole is penetrated at the center of the top of the top plate 200, and the cable 400 passes through the through hole. A fixed pulley 402 is arranged on the top of the top plate 200, and the cable 400 is attached to the surface of the fixed pulley 402.

[0040] Please refer to Figure 6 , the camera assembly 500 includes a cylindrical shell 501 fixedly installed at the bottom end of the cable 400. An installation seat 502 is rotatably connected inside the bottom end of the cylindrical shell 501. A camera body 503 is fixedly installed at the bottom of the installation seat 502. A ring gear one 504 is fixedly installed at the top of the installation seat 502. A motor one 506 is fixedly installed on the inner wall of the cylindrical shell 501. A driving gear one 505 is fixedly installed at the output end of the motor one 506. The driving gear one 505 meshes with the ring gear one 504. By driving the driving gear one 505 to rotate through the motor one 506, the ring gear one 504 and the installation seat 502 are driven to rotate, and the orientation of the camera body 503 is adjusted. The camera body 503 is connected with an electricity connection post 507. The electricity connection post 507 is fixedly penetrated at the center of the installation seat 502. A docking sleeve 508 is fixedly installed on the inner wall of the cylindrical shell 501. The electricity connection post 507 and the docking sleeve 508 are rotatably connected. The cable 400 is electrically connected to the docking sleeve 508. Thus, when adjusting the orientation of the camera body 503, the electricity connection post 507 rotates relative to the docking sleeve 508, and the cable 400 is kept connected to the camera body 503.

[0041] Please refer to Figure 5 and Figure 7, the rotation driving member 600 includes a second motor 601 fixedly installed on the top of the top plate 200. A rotating shaft 602 is fixedly installed at the output end of the second motor 601. The rotating shaft 602 is located on the front side of the driving shaft 303 and is parallel to the driving shaft 303. A support disk 603 is fixedly installed on the left end surface of the rotating shaft 602. A sector-shaped groove is formed through the surface of the support disk 603. A rotating arm 604 is fixedly installed on the left side of the support disk 603. The rotating arm 604 is arranged along the radial direction of the support disk 603. A pushing wheel 605 is fixedly installed on the right side of the other end of the rotating arm 604. The pushing wheel 605 is located on the front side of the middle of the sector-shaped groove.

[0042] A cross-shaped plate 606 is fixedly installed at the left end of the driving shaft 303. The surface between every two branches of the cross-shaped plate 606 is an arc surface. The circumferential surface of the support disk 603 is attached to the arc surface. The support disk 603 is supported by being attached to the front side of the cross-shaped plate 606. Through the setting of the sector-shaped groove, the end of the cross-shaped plate 606 is avoided. Four avoidance grooves 607 are formed through the side surface of the cross-shaped plate 606 in an array. The width of the avoidance groove 607 is equal to the diameter of the pushing wheel 605. The avoidance groove 607 is located in the middle of the branch of the cross-shaped plate 606. During the rotation of the rotating arm 604 following the rotating shaft 602, the pushing wheel 605 is used to insert into the avoidance groove 607 and push the cross-shaped plate 606 to rotate. Thus, the cross-shaped plate 606 rotates intermittently, and each rotation is 90°. And through the connection of the driving shaft 303, the winding roller 300 rotates intermittently, and the cable 400 is intermittently wound or released.

[0043] Please refer to Figures 7 - 8 , the friction assembly 700 includes a guide rod 701 fixedly installed on the fixed ring 301. The guide rod 701 is located directly below the driving shaft 303 and is parallel to the driving shaft 303. A first sliding ring 702 and a second sliding ring 703 are slidably connected to the guide rod 701. The first sliding ring 702 and the second sliding ring 703 are sleeved outside the driving shaft 303. The first sliding ring 702 is located on the right side of the second sliding ring 703. A first spring 704 is fixedly installed between the first sliding ring 702 and the second sliding ring 703. A friction plate 705 is fixedly installed on the right side of the first sliding ring 702. Through the elasticity of the first spring 704, the friction plate 705 is attached to the left end of the winding roller 300 to inhibit the rotation of the winding roller 300. Prevent the winding roller 300 from releasing too much cable 400 under the action of inertia.

[0044] A collar 706 is fixedly installed on the front side of the second sliding ring 703. The collar 706 is sleeved outside the rotating shaft 602. A sliding bead 707 is fixedly installed on the inner wall of the collar 706. An annular groove is formed on the rotating shaft 602, and the sliding bead 707 is slidably connected to the annular groove. The annular groove is composed of a short arc groove 708, a long arc groove 709 and two inclined grooves 710. The short arc groove 708 is located at the top of the rotating shaft 602, the long arc groove 709 is located at the bottom of the rotating shaft 602, the long arc groove 709 is located on the left side of the short arc groove 708. The central angle of the short arc groove 708 is 90°, the central angle of the long arc groove 709 is 210°, and the two inclined grooves 710 are respectively communicated between the ends of the short arc groove 708 and the long arc groove 709.

[0045] When the driving wheel 605 pushes the cross plate 606 to rotate, the sliding bead 707 slides in the short arc groove 708, keeping the second sliding ring 703 at the leftmost position. The first spring 704 is compressed by a short distance, and the friction between the friction plate 705 and the winding roller 300 is small. The winding roller 300 can rotate following the cross plate 606 through the connection of the driving shaft 303. When the driving wheel 605 disengages from the avoidance groove 607, the sliding bead 707 slides in the inclined groove 710 and the long arc groove 709.

[0046] When the sliding bead 707 slides in the long arc groove 709, the second sliding ring 703 is kept at the rightmost position. The first spring 704 is compressed by a large distance, and the friction between the friction plate 705 and the winding roller 300 is large, inhibiting the winding roller 300 from continuing to rotate under the action of inertia and releasing too much cable 400. When the sliding bead 707 slides along the inclined groove 710, making the collar 706 approach the long arc groove 709, the first spring 704 is gradually compressed, and the friction between the friction plate 705 and the winding roller 300 gradually increases, so that the winding roller 300 slowly stops rotating, avoiding the winding roller 300 suddenly stopping rotating, and the camera assembly 500 pulling the cable 400 too hard under the action of inertia, causing damage to the cable 400.

[0047] Please refer to Figures 9 - 11 , the support assembly 800 includes a tray 801 fixedly installed on the outer wall of the camera assembly 500. Six support arms 802 are fixedly arrayed on the circumferential surface of the tray 801. A chute 803 is formed through the top of the support arm 802. A sliding seat 804 and an extension arm 805 are slidably connected to the chute 803. Both the sliding seat 804 and the extension arm 805 are U-shaped. The sliding seat 804 is located inside the extension arm 805. A roller 806 is rotatably connected to the outer end of the extension arm 805. The roller 806 is used to roll on the inner wall of the pile hole, driving the camera assembly 500 to move in the pile hole.

[0048] One end of the outer side of the sliding seat 804 is fixedly installed with a connecting rod 807. One end of the inner side of the extension arm 805 is slidably connected to the connecting rod 807. A circular retaining piece is arranged at one end of the outer side of the connecting rod 807, and the circular retaining piece is located inside the extension arm 805. A second spring 808 is sleeved on the outer side of the connecting rod 807. Two ends of the second spring 808 are respectively attached to opposite ends of the sliding seat 804 and the extension arm 805. A pressure sensor 809 is fixedly installed at one end of the inner side of the extension arm 805. When the sliding seat 804 moves outward along the sliding groove 803, the extension arm 805 is pushed outward by the second spring 808, so that the roller 806 is attached to the inner wall of the pile hole, thereby adapting to pile holes with different diameters. And the extrusion force exerted by the second spring 808 on the extension arm 805 is monitored by the pressure sensor 809, so as to reflect the extrusion force between the roller 806 and the inner wall of the pile hole. The rolling of the roller 806 can be inhibited by increasing the extrusion force between the roller 806 and the inner wall of the pile hole, so that the camera assembly 500 is maintained at the current depth. When the sliding seat 804 moves inward along the sliding groove 803, the extension arm 805 is pulled inward by the circular retaining piece at the right end of the connecting rod 807.

[0049] A sliding column 810 is fixedly installed at the top of the sliding seat 804. A pushing member is arranged at the top of the tray 801, and the pushing member is used to drive the sliding seat 804 to slide along the sliding groove 803. The pushing member includes a rotating plate 811 attached to the top of the sliding seat 804. Six inclined frames 812 are fixedly arranged in an array on the side surface of the rotating plate 811. The sliding column 810 is slidably connected inside the inclined frames 812. A fixed column 813 is fixedly installed at the top of the tray 801. A pressing ring 814 is fixedly installed at the top of the fixed column 813. The pressing ring 814 is attached to the top of the rotating plate 811 and the inclined frames 812, and after the rotating plate 811 rotates, the inclined frames 812 are attached to the top of the sliding seat 804.

[0050] A speed reducer 815 is fixedly installed at the top of the pressing ring 814. The output end of the speed reducer 815 is fixedly installed with a third motor 816. The output end of the speed reducer 815 is fixedly installed with a second driving gear 817. An annular gear 818 is fixedly installed on the inner wall of the rotating plate 811. The second driving gear 817 and the annular gear 818 are meshed. Two counterweight blocks 819 are fixedly installed at the top of the pressing ring 814. The two counterweight blocks 819 and the speed reducer 815 are arranged in a circumferential array on the pressing ring 814. The second driving gear 817 is driven to rotate by the third motor 816 and the speed reducer 815, so as to drive the annular gear 818, the rotating plate 811 and the inclined frames 812 to rotate, and drive the sliding seat 804 to slide along the sliding groove 803 through the extrusion of the inner wall of the inclined frames 812 on the sliding column 810.

[0051] Please refer to Figures 12 - 13, the storage component 900 includes a mounting frame 901 fixedly installed in the middle of the traveling frame 100. Six groups of limiting frames 902 are fixedly arranged at the bottom of the mounting frame 901 in an array. Each group of limiting frames 902 is composed of two clamping plates. A cross plate 903 is fixedly installed on the left side of each group of limiting frames 902. A backing plate 904 is fixedly installed on the left side of the inner end of the cross plate 903. The cable 400 is wound by the winding roller 300, so that the camera component 500 and the support component 800 move upward, so that the support arm 802 is inserted into the inside of the limiting frame 902. Then, the driving gear two 817 is driven to rotate by the motor three 816 and the speed reducer 815, so as to drive the ring gear two 818, the rotating plate 811 and the inclined frame 812 to rotate, so that the inclined frame 812 deflects above the backing plate 904, and the backing plate 904 is used to lift the inclined frame 812.

[0052] When in use, the traveling frame 100 travels on the ground, so that the support component 800 moves to directly above the pile hole. The motor two 601 drives the rotating shaft 602 to rotate, and the rotating arm 604 deflects along with the rotating shaft 602, so that the pushing wheel 605 intermittently inserts into the avoidance groove 607 and pushes the cross plate 606 to rotate. With the connection effect of the driving shaft 303, the winding roller 300 is driven to rotate intermittently, and the cable 400 is released, so that the camera component 500 and the support component 800 move into the pile hole; During the rotation of the rotating shaft 602, when the sliding bead 707 slides along the short arc groove 708, the inclined groove 710 and the long arc groove 709, the collar 706 moves left and right reciprocally, driving the sliding ring two 703 to move left and right reciprocally, adjusting the compression amount of the first spring 704, so as to adjust the friction force between the friction plate 705 and the winding roller 300, and prevent the winding roller 300 from releasing too much cable 400 due to inertia when the pushing wheel 605 separates from the avoidance groove 607; After the support component 800 moves into the pile hole, the motor three 816 and the speed reducer 815 drive the driving gear two 817 to rotate, so as to drive the ring gear two 818, the rotating plate 811 and the inclined frame 812 to rotate. And through the extrusion of the inner wall of the inclined frame 812 on the sliding column 810, the sliding seat 804 is driven to slide outward along the sliding groove 803; the extension arm 805 is pushed to move outward by the second spring 808, so that the roller 806 fits on the inner wall of the pile hole, and the extrusion force applied by the second spring 808 to the extension arm 805 is monitored by the pressure sensor 809, so as to reflect the extrusion force between the roller 806 and the inner wall of the pile hole; the extrusion force between the roller 806 and the inner wall of the pile hole can be increased to inhibit the rolling of the roller 806, so that the camera component 500 is kept at the current depth; by reducing the extrusion force between the roller 806 and the inner wall of the pile hole, the support component 800 continues to move downward along the inner wall of the pile hole.

[0053] First, a certain length of cable 400 can be released, and then the support assembly 800 can be moved downward, and the moving distance of the support assembly 800 is less than the length of the released cable 400 to avoid the cable 400 from being tightened and damaged.

[0054] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for comprehensively evaluating the effective reinforcement depth of high-fill compaction foundation in mountainous areas based on surface wave inversion shear wave velocity and borehole imaging, characterized in that: The specific steps are as follows: S1. Divide the strata of the high-fill compaction foundation in mountainous areas, select the compaction test area and arrange the Rayleigh wave detection working line; S2. Apply an exciting source to the dynamic compaction test area, use surface wave analysis software to process the surface wave test results, and obtain the curve of surface wave velocity changing with depth direction; S3, fitting the processed surface wave curve and performing inversion processing to obtain the Rayleigh wave shear wave velocity Vi of each layer at different depths after strong compaction, and analyzing the effective reinforcement depth range of strong compaction of the test foundation; S4. Determine the density of soil layers at different depths in mountainous high-fill compaction foundations based on the wave velocity Vi of each layer of Rayleigh waves, and preliminarily obtain the effective reinforcement depth range of compaction by analyzing the inflection point of the wave velocity curve; S5. Using the pile hole of the building pile foundation without taking wall protection measures, a borehole imaging instrument is used to detect the strata at different depths in the pile hole, and typical images of different strata cross sections are intercepted at a certain distance along the pile depth; S6, analyzing the drilling images of the soil layer near the effective reinforcement depth range obtained in S4, and calculating the void ratio e of soil particles and pores per unit area using ImageJ or other image processing and analysis software; S7. Collect backfill soil samples from the site for indoor geotechnical tests. Use the specific gravity bottle method, drying method and compaction method to measure the soil particle specific gravity Gs, moisture content ω, and maximum dry density. , according to the porosity e, soil particle density Gs, water content , the soil dry density is obtained by the following relationship: , the compaction coefficient is obtained based on the ratio of the measured dry density of the compacted fill to the maximum dry density ; S8. According to the compaction coefficient λc and the variation curve of the wave velocity along the depth direction of the surface wave detection of the strongly compacted foundation, the effective reinforcement depth of the strongly compacted foundation is obtained; In S5, the stratum images at different depths in the pile hole are photographed by an image acquisition device.

2. The method for comprehensively evaluating the effective reinforcement depth of high fill and compaction foundation in mountainous areas based on surface wave inversion shear wave velocity and borehole imaging according to claim 1 is characterized in that: In S2, the hammer is used as the excitation source, and the anvil is stimulated by human knocking. Each point on each survey line needs to successfully stimulate the source twice and conduct two measurements and collections; In S6, the calculation formula of the void ratio e is: e = Sv / Ss, where e is the void ratio, Sv is the pore area, and Ss is the soil particle area; In S7, the soil dry density The calculation formula is: ; Compaction coefficient The calculation formula is: ; Among them, e is the void ratio, Gs is the specific gravity of soil particles, is the moisture content, is the density of water, is the maximum dry density of soil, is the dry density of the soil at the site, is the compaction coefficient.

3. The method for comprehensively evaluating the effective reinforcement depth of high fill and compaction foundation in mountainous areas based on surface wave inversion shear wave velocity and borehole imaging according to claim 1 is characterized in that: The image acquisition device comprises a walking frame (100), a top plate (200) is fixedly mounted on the top of the walking frame (100), a winding roller (300) is arranged on the top of the top plate (200), a cable (400) is wound on the surface of the winding roller (300), a camera assembly (500) is fixedly mounted on the bottom end of the cable (400), a rotating drive member (600) is connected to the left end of the winding roller (300), a friction assembly (700) is arranged between the rotating drive member (600) and the winding roller (300), a supporting assembly (800) is fixedly mounted on the surface of the camera assembly (500), and a storage assembly (900) is fixedly mounted in the middle of the walking frame (100).

4. The method for comprehensively evaluating the effective reinforcement depth of high fill and compaction foundation in mountainous areas based on surface wave inversion shear wave velocity and borehole imaging according to claim 3 is characterized in that: Both ends of the winding roller (300) are fixedly mounted with fixing rings (301), the top of the top plate (200) is fixedly mounted with two supports (302), the fixing ring (301) is rotatably connected to the supports (302), a driving shaft (303) is fixedly mounted at the center of the left end of the winding roller (300), the cable (400) is wound on the surface of the winding roller (300), and its top end penetrates and is fixed on the winding roller (300), and the cable (400) is connected to the winding roller (300) from the winding roller (300). 0) and the fixing ring (301) on the right side, a drilling imager (401) is fixedly installed on the top of the top plate (200), and the drilling imager (401) is fixedly installed on the top of the top plate (200). A through hole is opened through the center of the top of the top plate (200), and the cable (400) passes through the through hole. A fixed pulley (402) is provided on the top of the top plate (200), and the cable (400) is attached to the surface of the fixed pulley (402).

5. The method for comprehensively evaluating the effective reinforcement depth of high fill and compaction foundation in mountainous areas based on surface wave inversion shear wave velocity and borehole imaging according to claim 3 is characterized in that: The camera assembly (500) comprises a cylindrical shell (501) fixedly mounted at the bottom end of the cable (400); a mounting seat (502) is rotatably connected to the bottom end of the cylindrical shell (501); a camera body (503) is fixedly mounted at the bottom of the mounting seat (502); a ring gear 1 (504) is fixedly mounted at the top of the mounting seat (502); a motor 1 (506) is fixedly mounted on the inner wall of the cylindrical shell (501); a driving gear 1 (505) is fixedly mounted at the output end of the motor 1 (506); the driving gear 1 (505) is meshed with the ring gear 1 (504); the camera body (503) is connected to a power connection post (507); the power connection post (507) is fixed through the center of the mounting seat (502); a docking sleeve (508) is fixedly mounted on the inner wall of the cylindrical shell (501); the power connection post (507) and the docking sleeve (508) are rotatably connected.

6. The method for comprehensively evaluating the effective reinforcement depth of high-fill compaction foundation in mountainous areas based on surface wave inversion shear wave velocity and borehole imaging according to claim 4 is characterized in that: The rotating driving member (600) comprises a second motor (601) fixedly mounted on the top of the top plate (200); a rotating shaft (602) is fixedly mounted on the output end of the second motor (601); the rotating shaft (602) is located on the front side of the driving shaft (303); a supporting plate (603) is fixedly mounted on the left end surface of the rotating shaft (602); a fan-shaped groove is formed through the surface of the supporting plate (603); a rotating arm (604) is fixedly mounted on the left side of the supporting plate (603); a driving wheel (605) is fixedly mounted on the right side of the other end of the rotating arm (604); and the driving wheel (605) is located on the front side of the middle part of the fan-shaped groove; A cross plate (606) is fixedly mounted on the left end of the driving shaft (303); an arcuate surface is formed between every two branches of the cross plate (606); the circumferential surface of the support plate (603) is fitted on the arcuate surface; four avoidance grooves (607) are arranged in an array on the side surface of the cross plate (606); the avoidance grooves (607) are located in the middle of the branches of the cross plate (606); when the rotating arm (604) rotates following the rotating shaft (602), the driving wheel (605) is used to be inserted into the avoidance groove (607) and drive the cross plate (606) to rotate.

7. The method for comprehensively evaluating the effective reinforcement depth of high fill and compaction foundation in mountainous areas based on surface wave inversion shear wave velocity and borehole imaging according to claim 6 is characterized in that: The friction assembly (700) comprises a guide rod (701) fixedly mounted on a fixed ring (301), the guide rod (701) being located directly below a driving shaft (303), a sliding ring 1 (702) and a sliding ring 2 (703) being slidably connected to the guide rod (701), the sliding ring 1 (702) and the sliding ring 2 (703) being sleeved on the outside of the driving shaft (303), the sliding ring 1 (702) being located on the right side of the sliding ring 2 (703), a spring 1 (704) being fixedly mounted between the sliding ring 1 (702) and the sliding ring 2 (703), a friction plate (705) being fixedly mounted on the right side of the sliding ring 1 (702), and the friction plate (705) being attached to the left end of the winding roller (300); A sleeve ring (706) is fixedly mounted on the front side of the second sliding ring (703), the sleeve ring (706) is sleeved on the outside of the rotating shaft (602), a sliding ball (707) is fixedly mounted on the inner wall of the sleeve ring (706), an annular groove is provided on the rotating shaft (602), and the sliding ball (707) is slidably connected to the annular groove; The annular groove consists of a short arc groove (708), a long arc groove (709) and two inclined grooves (710); the short arc groove (708) is located at the top of the rotating shaft (602); the long arc groove (709) is located at the bottom of the rotating shaft (602); the long arc groove (709) is located on the left side of the short arc groove (708); the central angle of the short arc groove (708) is 90°; the central angle of the long arc groove (709) is 210°; and the two inclined grooves (710) are respectively connected between the ends of the short arc groove (708) and the long arc groove (709).

8. The method for comprehensively evaluating the effective reinforcement depth of high-fill compaction foundation in mountainous areas based on surface wave inversion shear wave velocity and borehole imaging according to claim 3 is characterized by: The support assembly (800) comprises a tray (801) fixedly mounted on the outer wall of the camera assembly (500), six support arms (802) being fixed in an array on the circumferential surface of the tray (801), a slide groove (803) being provided through the top of the support arm (802), a slide seat (804) and an extension arm (805) being slidably connected to the slide groove (803), the slide seat (804) and the extension arm (805) both being U-shaped, the slide seat (804) being located on the inner side of the extension arm (805), a roller (806) being rotatably connected to the outer end of the extension arm (805), a connecting rod (807) being fixedly mounted to the outer end of the slide seat (804), and the One inner end of the extension arm (805) is slidably connected to the connecting rod (807), and a circular baffle is provided at the outer end of the connecting rod (807), and the circular baffle is located inside the extension arm (805). A second spring (808) is sleeved on the outer side of the connecting rod (807), and the two ends of the second spring (808) are respectively fitted on the slide seat (804) and the opposite end of the extension arm (805). A pressure sensor (809) is fixedly installed on the inner end of the extension arm (805), and a sliding column (810) is fixedly installed on the top of the slide seat (804). A pushing member is provided on the top of the tray (801), and the pushing member is used to drive the slide seat (804) to slide along the slide groove (803).

9. The method for comprehensively evaluating the effective reinforcement depth of high-fill compaction foundation in mountainous areas based on surface wave inversion shear wave velocity and borehole imaging according to claim 8, characterized in that: The pusher comprises a rotating plate (811) attached to the top of the slide seat (804); six tilting frames (812) are fixed in an array on the side of the rotating plate (811); the sliding column (810) is slidably connected in the tilting frame (812); a fixed column (813) is fixedly installed on the top of the tray (801); a pressure ring (814) is fixedly installed on the top of the fixed column (813); the pressure ring (814) is attached to the top of the rotating plate (811) and the tilting frame (812); a speed reducer is fixedly installed on the top of the pressure ring (814); The reducer (815) is provided with a motor three (816) fixedly mounted on the output end of the reducer (815), a driving gear two (817) fixedly mounted on the output end of the reducer (815), a ring gear two (818) fixedly mounted on the inner wall of the rotating plate (811), the driving gear two (817) and the ring gear two (818) being meshed, two counterweight blocks (819) fixedly mounted on the top of the pressure ring (814), and the two counterweight blocks (819) and the reducer (815) are arranged in a circular array on the pressure ring (814).

10. The method for comprehensively evaluating the effective reinforcement depth of high-fill compaction foundation in mountainous areas based on surface wave inversion shear wave velocity and borehole imaging according to claim 3, characterized in that: The storage assembly (900) comprises a mounting frame (901) fixedly mounted in the middle of the walking frame (100); six groups of limit frames (902) are fixedly mounted in an array at the bottom of the mounting frame (901); each group of limit frames (902) is composed of two clamping plates; a horizontal plate (903) is fixedly mounted on the left side of each group of limit frames (902); and a pad (904) is fixedly mounted on the left side of one inner end of the horizontal plate (903).

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