A device for detecting the grouting effect of rock and soil masses

Abstract

The present invention discloses a device for detecting the grouting effect of rock and soil masses, which relates to the field of construction technology. It includes a support assembly. A driving assembly is jointly arranged at the top of the support assembly and inside the support assembly. A connecting assembly is rotatably arranged at the bottom of the support assembly. The bottom end of the connecting assembly is connected with a detachable extension mechanism. The detachable extension mechanism includes an extension assembly, a support assembly and a geophone. The support assembly is located in the middle of the outside of the extension assembly. The geophone is fixedly arranged at the bottom right of the extension assembly. The support assembly includes a lower support plate, an upper support plate and a fixing rod. The upper support plate is located on the top of the lower support plate. The present invention can not only achieve effective support, but also be conveniently recycled after the detection. In addition, the automatic connection of the two extension assemblies can be more conveniently completed, with simple operation and effectively reducing the use difficulty.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly relates to a device for detecting the grouting effect of rock and soil masses. Background Art

[0002] Rock and soil mass grouting refers to injecting cement slurry under a certain pressure into the rock and soil mass through a specific grouting channel by using a high-pressure grouting pump, and the slurry plays roles such as penetration, filling, compaction, splitting, and consolidation on the rock and soil mass to enhance the strength of the rock and soil.

[0003] The invention patent with the authorization announcement number CN111308545A discloses a device for detecting the grouting effect of rock and soil masses, which includes a geophone string. The geophone string includes geophones and plug rods. A plurality of geophones are detachably connected to the plug rods, and the plurality of geophones are sequentially connected by a first cable. A plurality of support arms are rotatably connected to the plug rod at each geophone, and a torsion spring for the support arm to rotate outward is arranged at the rotational connection of the support arm and the plug rod. This invention has the effect of facilitating the detection of the grouting effect of rock and soil masses for various ground conditions.

[0004] However, due to the inclined arrangement of the detection hole, the above device is also in an inclined state after extending into the detection hole. At this time, when using the torsion spring to drive the support arm for support, it is very easy to occur that the support arm cannot be effectively supported due to insufficient torsion of the torsion spring. If a torsion spring with a larger torsion is used to ensure the support strength, it will increase the difficulty of retracting the support arm later.

[0005] In addition, when connecting the device according to different depths of the detection hole, not only the connection of two plug rods needs to be completed, but also a plurality of connecting rods are required to connect adjacent two first sleeves later to ensure the synchronous movement of the first sleeve, and the operation is cumbersome and inconvenient to use.

[0006] Therefore, it is very necessary to invent a device for detecting the grouting effect of rock and soil masses to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a device for detecting the grouting effect of rock and soil masses to solve the problems raised in the above background art.

[0008] To achieve the above purpose, the present invention provides the following technical solution: A device for detecting the grouting effect of rock and soil masses, including a bracket assembly. A driving assembly is jointly arranged at the top and inside of the bracket assembly. A connecting assembly is rotatably arranged at the bottom of the bracket assembly. The bottom end of the connecting assembly is connected with a detachable extension mechanism. The detachable extension mechanism includes an extension assembly, a support assembly, and a geophone. The support assembly is located in the middle of the outer side of the extension assembly. The geophone is fixedly arranged at the bottom right of the extension assembly;

[0009] The bracket assembly includes a lower bracket plate, an upper bracket plate, and fixing rods;

[0010] The upper bracket plate is located at the top of the lower bracket plate. There are four fixing rods, and the four fixing rods are evenly and fixedly arranged between the lower bracket plate and the upper bracket plate;

[0011] The driving assembly includes a driving motor, a driving screw rod, a receiving groove, a first spring, an extending square shaft, a clamping rod, a lifting plate, a lifting sleeve, and a pressing rod;

[0012] The driving motor is fixedly arranged at the top of the upper bracket plate. The driving screw rod is located at the bottom of the upper bracket plate and is in transmission connection with the driving motor. The receiving groove is opened at the bottom of the driving screw rod. One end of the first spring is fixedly connected to the inner wall of the receiving groove and the other end is fixedly connected to the extending square shaft. The extending square shaft is slidably arranged inside the receiving groove. The clamping rod is fixedly arranged at the bottom end of the extending square shaft. The lifting plate and the lifting sleeve are both sleeved outside the driving screw rod and are threadedly connected to the driving screw rod. The lifting plate is slidably sleeved outside the four fixing rods. The lifting sleeve is fixedly connected to the lifting plate. There are two pressing rods, and the two pressing rods are respectively fixedly arranged on both sides of the bottom of the lifting sleeve;

[0013] The connecting assembly includes a connecting sleeve, a threaded connecting portion, an avoidance groove, and a clamping groove;

[0014] The connecting sleeve is rotatably nested at the bottom of the lower bracket plate through a bearing. The threaded connecting portion is arranged at the bottom of the connecting sleeve. The avoidance groove and the clamping groove are both opened on the inner wall of the connecting sleeve. The clamping groove is located above the avoidance groove. The clamping rod is slidably arranged vertically inside the clamping groove.

[0015] Preferably, the extending assembly includes an extending sleeve, a longitudinal groove, a sliding rod, a lifting column, a top plate, a bottom plate, a pressing plate, a second spring, and a limiting plate.

[0016] Preferably, the extending sleeve is sleeved outside the threaded connecting portion and is threadedly connected to the threaded connecting portion. There are two longitudinal grooves, and the two longitudinal grooves are respectively opened on the front and back of the extending sleeve. The sliding rod is slidably arranged inside the two longitudinal grooves.

[0017] Preferably, the lifting column penetrates through the sliding rod and is fixedly connected to the sliding rod. The top plate and the bottom plate are respectively fixedly arranged at the top end and the bottom end of the lifting column.

[0018] Preferably, the pressing plate is fixedly sleeved outside the lifting column and is slidably nested inside the extending sleeve. The second spring and the limiting plate are both slidably sleeved outside the lifting column. The second spring is located between the pressing plate and the limiting plate. The limiting plate is fixedly connected to the inner wall of the extending sleeve.

[0019] Preferably, the support assembly includes a guide table, a lifting disc, a first chute, a second chute, a sliding push block, and a support column.

[0020] Preferably, there are two guide tables, and the two guide tables are respectively fixedly arranged in the middle of both sides of the extension sleeve. The lifting disc is slidably sleeved outside the extension sleeve and is fixedly connected to both ends of the sliding rod.

[0021] Preferably, there are two first chutes, two sliding push blocks, and two support columns. The two first chutes are respectively opened on both sides inside the lifting disc. The two guide tables are respectively slidably arranged inside the two first chutes. Two second chutes are opened inside any one of the first chutes. A return spring is fixedly connected to the inside. The sliding push block is slidably arranged inside the two second chutes. The support column slidably penetrates the outer wall of the lifting disc and is fixedly connected to the sliding push block.

[0022] The present invention also provides a detection method for a grouting effect detection device for rock and soil masses, which specifically includes the following steps:

[0023] S1. Detecting holes are arranged in the grouting area of the rock and soil mass. Among them, multiple groups of detecting holes are arranged within the predicted diffusion area. Each group of detecting holes consists of three and forms a triangular layout centered on the grouting area. The distances of multiple groups of detecting holes from the center of the grouting area increase in sequence. The detecting holes use PVC pipes as the retaining wall. The electric spark source is placed in any one of the detecting holes, and then the number of detachable extension mechanisms to be used is selected according to the length of the detecting hole.

[0024] S2. When connecting two adjacent detachable extension mechanisms, the driving motor drives the driving screw to rotate. When the driving screw rotates, it drives the connecting sleeve to rotate synchronously through the extension square shaft, the clamping rod, and the clamping groove. The connecting sleeve drives the detachable extension mechanism at its bottom to rotate through the threaded connection part. At this time, the detachable extension mechanism to be connected is taken and docked with the extension component at the bottom of the connecting component, and then the screwing connection can be automatically completed. The above operation is repeated multiple times to complete the assembly of the device. Then, multiple geophones are connected by cables to form a geophone string, and then the electric spark source and the geophone string are connected to the detection and analysis system.

[0025] S3. Subsequently, the connected device is inserted into the detection hole. After the device is inserted, the lower support plate blocks the opening of the detection hole. At this time, the driving motor is restarted, and the driving motor drives the driving screw to rotate again. When the driving screw rotates, it drives the lifting plate and the lifting sleeve to descend synchronously. When the lifting sleeve descends, it drives the pressure rod to descend synchronously.

[0026] S4. When the lifting sleeve descends by a first threshold distance, it contacts the clamping rod. Subsequently, as the lifting sleeve continues to descend, the lifting sleeve pushes the clamping rod. When the lifting sleeve descends by a second threshold distance, the clamping rod enters the inner side of the avoidance groove along the card slot. At this time, the driving screw drives the clamping rod to rotate idly inside the avoidance groove through the extended square shaft, and the connecting sleeve no longer rotates continuously.

[0027] S5. When the lifting sleeve descends by a third threshold distance, the pressing rod starts to contact the adjacent top plate driven by the lifting sleeve and pushes the top plate during the subsequent descent. When the top plate is pushed, the sliding rod is driven to descend by the lifting column. When the sliding rod descends, it drives the lifting disc to descend synchronously. During the descent of the lifting disc, the guiding platform continuously pushes the sliding push block. The sliding push block slides inside the second chute and pushes the support column outwards, so that the support column supports on the inner wall of the PVC pipe to form a support. At this time, the device body is coaxially arranged with the PVC pipe.

[0028] S6. Before and after grouting respectively, elastic waves are excited by an electric spark source, and the signals collected by the geophone string are transmitted to the detection and analysis system. The detection and analysis system forms a two-dimensional CT image through an inversion algorithm. By comparing the two-dimensional CT images of the rock and soil mass before and after grouting, the grouting area and grouting effect are determined, so as to complete the detection of the grouting effect of the rock and soil mass.

[0029] The technical effects and advantages of the present invention:

[0030] By providing a driving component, a connecting component, an extending component and a supporting component, the present invention facilitates driving the connecting component by the driving component, so that the connecting component drives the extending component at its bottom to automatically connect to other extending components. At the same time, as the driving component continues to work, the driving component can release the driving of the connecting component and drive the extending component, so that the extending component drives the supporting component to achieve support. Compared with the same type of device in the prior art, the present invention can not only achieve effective support, but also be more convenient to recycle after the detection is completed. In addition, the automatic connection of the two extending components can be completed more conveniently, with simple operation and effectively reducing the use difficulty. Description of the Drawings

[0031] Figure 1 It is a schematic front view structure diagram of the whole of the present invention.

[0032] Figure 2 It is a schematic front sectional view structure diagram of the whole of the present invention.

[0033] Figure 3 It is a schematic front sectional view structure diagram of the bracket component, the driving component and the connecting component of the present invention.

[0034] Figure 4Schematic front sectional view of the extension component and the support component of the present invention.

[0035] Figure 5 Schematic top view of the extension component and the support component of the present invention.

[0036] In the figure: 1. Bracket assembly; 11. Lower bracket plate; 12. Upper bracket plate; 13. Fixed rod; 2. Driving assembly; 21. Driving motor; 22. Driving screw; 23. Accommodating groove; 24. First spring; 25. Extension square shaft; 26. Clamping rod; 27. Lifting plate; 28. Lifting sleeve; 29. Pressing rod; 3. Connecting assembly; 31. Connecting sleeve; 32. Threaded connection part; 33. Avoidance groove; 34. Card slot; 4. Extension component; 41. Extension sleeve; 42. Longitudinal groove; 43. Slide bar; 44. Lifting column; 45. Top plate; 46. Bottom plate; 47. Pressing plate; 48. Second spring; 49. Limiting plate; 5. Support component; 51. Guide platform; 52. Lifting disc; 53. First chute; 54. Second chute; 55. Sliding push block; 56. Support column; 6. Geophone. Detailed implementation manners

[0037] 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Embodiment 1

[0039] The present invention provides a Figures 1-5 shown rock and soil body grouting effect detection device, including a bracket assembly 1, a driving assembly 2 is jointly arranged at the top of the bracket assembly 1 and inside the bracket assembly 1, a connecting assembly 3 is rotatably arranged at the bottom of the bracket assembly 1, the bottom end of the connecting assembly 3 is connected with a detachable extension mechanism, the detachable extension mechanism includes an extension component 4, a support component 5 and a geophone 6, the support component 5 is located in the middle outside the extension component 4, and the geophone 6 is fixedly arranged at the bottom right of the extension component 4.

[0040] As Figure 3 shown, the bracket assembly 1 includes a lower bracket plate 11, an upper bracket plate 12 and a fixed rod 13. Among them, the upper bracket plate 12 is located at the top of the lower bracket plate 11, four fixed rods 13 are provided, and the four fixed rods 13 are evenly and fixedly arranged between the lower bracket plate 11 and the upper bracket plate 12.

[0041] As Figure 3As shown, the driving assembly 2 includes a driving motor 21, a driving screw 22, a receiving groove 23, a first spring 24, an extending square shaft 25, a clamping rod 26, a lifting plate 27, a lifting sleeve 28, and a pressing rod 29. Among them, the driving motor 21 is fixedly arranged at the top of the upper support plate 12, the driving screw 22 is located at the bottom of the upper support plate 12 and is in transmission connection with the driving motor 21. The receiving groove 23 is opened at the bottom of the driving screw 22. One end of the first spring 24 is fixedly connected to the inner wall of the receiving groove 23 and the other end is fixedly connected to the extending square shaft 25. The extending square shaft 25 is slidably arranged inside the receiving groove 23. The clamping rod 26 is fixedly arranged at the bottom end of the extending square shaft 25. Both the lifting plate 27 and the lifting sleeve 28 are sleeved outside the driving screw 22 and are in threaded connection with the driving screw 22. The lifting plate 27 is slidably sleeved outside the four fixing rods 13. The lifting sleeve 28 is fixedly connected to the lifting plate 27. There are two pressing rods 29, and the two pressing rods 29 are respectively fixedly arranged on both sides of the bottom of the lifting sleeve 28.

[0042] As Figure 3 shown, the connecting assembly 3 includes a connecting sleeve 31, a threaded connection portion 32, an avoidance groove 33, and a clamping groove 34. Among them, the connecting sleeve 31 is rotationally nested at the bottom of the lower support plate 11 through a bearing. The threaded connection portion 32 is arranged at the bottom of the connecting sleeve 31. Both the avoidance groove 33 and the clamping groove 34 are opened on the inner wall of the connecting sleeve 31. The clamping groove 34 is located above the avoidance groove 33. The clamping rod 26 is slidably arranged vertically inside the clamping groove 34.

[0043] By providing the driving assembly 2 and the connecting assembly 3, when the driving screw 22 rotates, the connecting sleeve 31 can be driven to rotate synchronously through the extending square shaft 25, the clamping rod 26, and the clamping groove 34. The connecting sleeve 31 drives the detachable extension mechanism at its bottom to rotate through the threaded connection portion 32. At this time, the detachable extension mechanism to be connected is taken and docked with the extension assembly 4 at the bottom of the connecting assembly 3, and then the screwing connection can be automatically completed. Repeat the above operation multiple times to complete the assembly of the device. Then, use cables to connect multiple geophones 6 to form a geophone string, and then connect the sparker source and the geophone string to the detection and analysis system.

[0044] In addition, when the lifting sleeve 28 descends a distance of the first threshold value, the lifting sleeve 28 contacts the clamping rod 26. Subsequently, as the lifting sleeve 28 continues to descend, the lifting sleeve 28 pushes the clamping rod 26. When the lifting sleeve 28 descends a distance of the second threshold value, the clamping rod 26 enters the avoidance groove 33 along the clamping groove 34. At this time, the driving screw 22 drives the clamping rod 26 to rotate idly inside the avoidance groove 33 through the extending square shaft 25, and the connecting sleeve 31 stops rotating.

[0045] As Figure 4 withFigure 5 As shown, the extension component 4 includes an extension sleeve 41, a longitudinal groove 42, a sliding rod 43, a lifting column 44, a top plate 45, a bottom plate 46, a pressing plate 47, a second spring 48 and a limiting plate 49. Among them, the extension sleeve 41 is sleeved outside the threaded connection part 32 and is threadedly connected to the threaded connection part 32. Two longitudinal grooves 42 are provided, and the two longitudinal grooves 42 are respectively opened on the front and back of the extension sleeve 41. The sliding rod 43 is slidably arranged inside the two longitudinal grooves 42. The lifting column 44 passes through the sliding rod 43 and is fixedly connected to the sliding rod 43. The top plate 45 and the bottom plate 46 are respectively fixedly arranged at the top end and the bottom end of the lifting column 44. The pressing plate 47 is fixedly sleeved outside the lifting column 44 and is slidably nested inside the extension sleeve 41. The second spring 48 and the limiting plate 49 are both slidably sleeved outside the lifting column 44. The second spring 48 is located between the pressing plate 47 and the limiting plate 49. The limiting plate 49 is fixedly connected to the inner wall of the extension sleeve 41.

[0046] By setting the above structure, when the top plate 45 is pressed and descends, the sliding rod 43 is driven to descend synchronously through the lifting column 44. In addition, the bottom plate 46 at the bottom of the lifting column 44 also presses the top plate 45 in the adjacent extension component 4. When the top plate 45 is no longer pressed, the second spring 48 pushes the pressing plate 47, and then the pressing plate 47 drives the lifting column 44 to reset.

[0047] As Figure 4 shown in Figure 5 As shown, the support component 5 includes a guide platform 51, a lifting disc 52, a first chute 53, a second chute 54, a sliding push block 55 and a support column 56. Among them, two guide platforms 51 are provided, and the two guide platforms 51 are respectively fixedly arranged in the middle of both sides of the extension sleeve 41. The lifting disc 52 is slidably sleeved outside the extension sleeve 41 and is fixedly connected to both ends of the sliding rod 43. Two first chutes 53, two sliding push blocks 55 and two support columns 56 are provided. The two first chutes 53 are respectively opened on both sides inside the lifting disc 52. The two guide platforms 51 are respectively slidably arranged inside the two first chutes 53. Two second chutes 54 are opened inside any one of the first chutes 53. A return spring is fixedly connected inside the 54. The sliding push block 55 is slidably arranged inside the two second chutes 54. The support column 56 slidably passes through the outer wall of the lifting disc 52 and is fixedly connected to the sliding push block 55.

[0048] By setting the above structure, it is convenient for the sliding rod 43 to drive the lifting disc 52 to descend synchronously. During the descent of the lifting disc 52, the guiding platform 51 continuously pushes the sliding push block 55. The sliding push block 55 slides inside the second chute 54 and pushes the support column 56 outwards, so that the support column 56 supports on the inner wall of the PVC pipe to form a support. At this time, the device main body is coaxially arranged with the PVC pipe. In addition, when the sliding rod 43 drives the lifting disc 52 to rise and reset later, the reset spring inside the second chute 54 pushes the sliding push block 55, so that the sliding push block 55 drives the support column 56 to reset automatically.

[0049] Embodiment 2

[0050] The present invention also provides a detection method for a grouting effect detection device of a rock and soil body, which specifically includes the following steps:

[0051] S1. Detection channels are arranged in the grouting area of the rock and soil body. Among them, multiple groups of detection channels are arranged within the predicted diffusion area. Each group of detection channels consists of three and forms a triangular layout with the grouting area as the center. And the distances of multiple groups of detection channels from the center of the grouting area increase in sequence. The detection channels use PVC pipes as the retaining walls. The electric spark source is placed in any one of the detection channels, and then the number of detachable extension mechanisms to be used is selected according to the length of the detection channel;

[0052] S2. When connecting two adjacent detachable extension mechanisms, the driving motor 21 drives the driving screw 22 to rotate. When the driving screw 22 rotates, it drives the connecting sleeve 31 to rotate synchronously through the extension square shaft 25, the clamping rod 26 and the card slot 34. The connecting sleeve 31 drives the detachable extension mechanism at its bottom to rotate through the threaded connection part 32. At this time, the detachable extension mechanism to be connected is taken and docked with the extension component 4 at the bottom of the connecting component 3, so that the screwing connection can be automatically completed. The above operation is repeated multiple times to complete the assembly of the device. Then, multiple geophones 6 are connected by cables to form a geophone string, and then the electric spark source and the geophone string are connected to the detection and analysis system;

[0053] S3. Subsequently, the connected device is inserted into the detection channel. After the device is inserted, the lower support plate 11 blocks the opening of the detection channel. At this time, the driving motor 21 is restarted, and the driving motor 21 drives the driving screw 22 to rotate again. When the driving screw 22 rotates, it drives the lifting plate 27 and the lifting sleeve 28 to descend synchronously. When the lifting sleeve 28 descends, it drives the pressure rod 29 to descend synchronously;

[0054] S4. When the lifting sleeve 28 descends by a first threshold distance, the lifting sleeve 28 contacts the clamping rod 26. Subsequently, as the lifting sleeve 28 continues to descend, the lifting sleeve 28 pushes the clamping rod 26. When the lifting sleeve 28 descends by a second threshold distance, the clamping rod 26 enters the inner side of the avoidance groove 33 along the card slot 34. At this time, the driving screw 22 drives the clamping rod 26 to rotate idly inside the avoidance groove 33 through the extension square shaft 25, and the connecting sleeve 31 no longer rotates continuously;

[0055] S5. When the lifting sleeve 28 descends by a third threshold distance, the pressing rod 29 starts to contact the adjacent top plate 45 driven by the lifting sleeve 28 and pushes the top plate 45 during the subsequent descent. When the top plate 45 is pushed, the lifting column 44 drives the sliding rod 43 to descend. When the sliding rod 43 descends, it drives the lifting disc 52 to descend synchronously. During the descent of the lifting disc 52, the guiding platform 51 continuously pushes the sliding push block 55. The sliding push block 55 slides inside the second sliding groove 54 and pushes the support column 56 outwards, so that the support column 56 supports on the inner wall of the PVC pipe to form a support. At this time, the device main body is coaxially arranged with the PVC pipe;

[0056] S6. Before and after grouting respectively, elastic waves are excited by an electric spark source, and the signals collected by the geophone string are transmitted to the detection and analysis system. The detection and analysis system forms a two-dimensional CT image through an inversion algorithm. By comparing the two-dimensional CT images of the rock and soil mass before and after grouting, the grouting area and grouting effect are determined, thereby completing the detection of the grouting effect of the rock and soil mass.

[0057] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for detecting the grouting effect of rock and soil masses, characterized in that: It includes a bracket assembly (1), a driving assembly (2) is jointly arranged at the top of the bracket assembly (1) and inside the bracket assembly (1), a connecting assembly (3) is rotatably arranged at the bottom of the bracket assembly (1), a detachable extension mechanism is connected to the bottom end of the connecting assembly (3), and the detachable extension mechanism includes an extension assembly (4), a support assembly (5) and a detector (6). The support assembly (5) is located in the middle of the outer side of the extension assembly (4), and the detector (6) is fixedly arranged at the bottom right of the extension assembly (4). The bracket assembly (1) includes a lower bracket plate (11), an upper bracket plate (12) and a fixing rod (13). The upper bracket plate (12) is located at the top of the lower bracket plate (11), there are four fixing rods (13), and the four fixing rods (13) are evenly and fixedly arranged between the lower bracket plate (11) and the upper bracket plate (12). The driving assembly (2) includes a driving motor (21), a driving screw rod (22), a receiving groove (23), a first spring (24), an extending square shaft (25), a clamping rod (26), a lifting plate (27), a lifting sleeve (28) and a pressing rod (29). The driving motor (21) is fixedly arranged at the top of the upper bracket plate (12), the driving screw rod (22) is located at the bottom of the upper bracket plate (12) and is in transmission connection with the driving motor (21). The receiving groove (23) is opened at the bottom of the driving screw rod (22). One end of the first spring (24) is fixedly connected to the inner wall of the receiving groove (23) and the other end is fixedly connected to the extending square shaft (25). The extending square shaft (25) is slidably arranged inside the receiving groove (23). The clamping rod (26) is fixedly arranged at the bottom end of the extending square shaft (25). The lifting plate (27) and the lifting sleeve (28) are both sleeved outside the driving screw rod (22) and are threadedly connected to the driving screw rod (22). The lifting plate (27) is slidably sleeved outside the four fixing rods (13). The lifting sleeve (28) is fixedly connected to the lifting plate (27). There are two pressing rods (29), and the two pressing rods (29) are respectively fixedly arranged on both sides of the bottom of the lifting sleeve (28). The connecting assembly (3) includes a connecting sleeve (31), a threaded connection part (32), an avoidance groove (33) and a clamping groove (34). The connecting sleeve (31) is rotatably nested at the bottom of the lower bracket plate (11) through a bearing. The threaded connection part (32) is arranged at the bottom of the connecting sleeve (31). The avoidance groove (33) and the clamping groove (34) are both opened on the inner wall of the connecting sleeve (31). The clamping groove (34) is located above the avoidance groove (33). The clamping rod (26) is slidably arranged vertically inside the clamping groove (34).

2. The grouting effect detection device for rock and soil mass according to claim 1, characterized in that: The extension assembly (4) includes an extension sleeve (41), a longitudinal groove (42), a sliding rod (43), a lifting column (44), a top plate (45), a bottom plate (46), a pressing plate (47), a second spring (48) and a limiting plate (49).

3. The grouting effect detection device for rock and soil body according to claim 2, characterized in that: The extension sleeve (41) is sleeved outside the threaded connection part (32) and is threadedly connected to the threaded connection part (32). Two longitudinal grooves (42) are provided, and the two longitudinal grooves (42) are respectively formed on the front and back of the extension sleeve (41). The sliding rod (43) is slidably arranged inside the two longitudinal grooves (42).

4. The grouting effect detection device for geotechnical bodies according to claim 3, characterized in that: The lifting column (44) penetrates through the sliding rod (43) and is fixedly connected to the sliding rod (43). The top plate (45) and the bottom plate (46) are respectively fixedly arranged at the top end and the bottom end of the lifting column (44).

5. The grouting effect detection device for rock and soil mass according to claim 4, characterized in that: The pressing plate (47) is fixedly sleeved outside the lifting column (44) and is slidably nested inside the extension sleeve (41). The second spring (48) and the limiting plate (49) are both slidably sleeved outside the lifting column (44). The second spring (48) is located between the pressing plate (47) and the limiting plate (49). The limiting plate (49) is fixedly connected to the inner wall of the extension sleeve (41).

6. The grouting effect detection device for rock and soil mass according to claim 5, characterized in that: The support assembly (5) includes a guide platform (51), a lifting disc (52), a first chute (53), a second chute (54), a sliding push block (55) and a support column (56).

7. The grouting effect detection device for rock and soil mass according to claim 6, characterized in that: Two guide platforms (51) are provided, and the two guide platforms (51) are respectively fixedly arranged in the middle of both sides of the extension sleeve (41). The lifting disc (52) is slidably sleeved outside the extension sleeve (41) and is fixedly connected to both ends of the sliding rod (43).

8. The detection device for the grouting effect of rock and soil mass according to claim 7, characterized in that: Two first chutes (53), two sliding push blocks (55) and two support columns (56) are provided. The two first chutes (53) are respectively formed on both sides inside the lifting disc (52). The two guide platforms (51) are respectively slidably arranged inside the two first chutes (53). Two second chutes (54) are formed inside any one of the first chutes (53). A return spring is fixedly connected inside the (54). The sliding push block (55) is slidably arranged inside the two second chutes (54). The support column (56) slidably penetrates through the outer wall of the lifting disc (52) and is fixedly connected to the sliding push block (55).

9. The detection method of a detection device for the grouting effect of rock and soil mass according to any one of claims 1-8, characterized in that, Specifically, it includes the following steps: S1. Detecting holes are arranged in the grouting area of the rock and soil mass. Among them, multiple groups of detecting holes are arranged within the predicted diffusion area. Each group of detecting holes consists of three and forms a triangular layout with the grouting area as the center. And the distances of multiple groups of detecting holes from the center of the grouting area increase in sequence. The detecting holes use PVC pipes as the retaining walls. The electric spark source is placed in any one of the detecting holes, and then the number of detachable extension mechanisms to be used is selected according to the length of the detecting holes; S2. When connecting two adjacent detachable extension mechanisms, the driving motor (21) drives the driving screw (22) to rotate. When the driving screw (22) rotates, it drives the connecting sleeve (31) to rotate synchronously through the extension square shaft (25), the clamping rod (26) and the card slot (34). The connecting sleeve (31) then drives the detachable extension mechanism at its bottom to rotate through the threaded connection part (32). At this time, take the detachable extension mechanism to be connected, and dock it with the extension component (4) at the bottom of the connecting component (3), and then the screwing connection can be automatically completed. Repeat the above operation multiple times to complete the assembly of the device. Then use cables to connect multiple geophones (6) to form a geophone string, and then connect the sparker and the geophone string to the detection and analysis system; S3. Then insert the connected device into the detection hole. After the device is inserted, the lower support plate (11) blocks the opening of the detection hole. At this time, restart the driving motor (21), and the driving motor (21) drives the driving screw (22) to rotate again. When the driving screw (22) rotates, it drives the lifting plate (27) and the lifting sleeve (28) to descend synchronously. When the lifting sleeve (28) descends, it drives the pressing rod (29) to descend synchronously; S4. When the lifting sleeve (28) descends a distance of the first threshold, the lifting sleeve (28) contacts the clamping rod (26). Subsequently, as the lifting sleeve (28) continues to descend, the lifting sleeve (28) pushes the clamping rod (26). When the lifting sleeve (28) descends a distance of the second threshold, the clamping rod (26) enters the inner side of the avoidance groove (33) along the card slot (34). At this time, the driving screw (22) drives the clamping rod (26) to rotate idly inside the avoidance groove (33) through the extension square shaft (25), and the connecting sleeve (31) no longer continues to rotate; S5. When the lifting sleeve (28) descends a distance of the third threshold, the pressing rod (29) starts to contact the adjacent top plate (45) driven by the lifting sleeve (28), and pushes the top plate (45) during the subsequent descent. When the top plate (45) is pushed, it drives the sliding rod (43) to descend through the lifting column (44). When the sliding rod (43) descends, it drives the lifting disc (52) to descend synchronously. During the descent of the lifting disc (52), the guiding platform (51) continuously pushes the sliding push block (55). The sliding push block (55) slides inside the second chute (54) and pushes the support column (56) outwards, so that the support column (56) supports on the inner wall of the PVC pipe to form a support. At this time, the device body is coaxially arranged with the PVC pipe; S6. Before and after grouting respectively, the elastic wave is excited by the sparker, and the signals collected by the geophone string are transmitted to the detection and analysis system. The detection and analysis system forms a two-dimensional CT image through the inversion algorithm. By comparing the two-dimensional CT images of the rock and soil mass before and after grouting, the grouting area and grouting effect are determined, so as to complete the detection of the grouting effect of the rock and soil mass.

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