A grouting reinforcement effect detection device for phase change grouting materials in water-rich freeze-thaw strata

Abstract

The present invention proposes a device for detecting the grouting reinforcement effect of phase change grouting materials in water-rich freeze-thaw strata, relates to the technical field of grouting reinforcement effect detection, and comprises a penetrometer body, wherein the penetrometer body comprises a shell and handles on both sides of the shell, and a mounting block which slides up and down is coaxially arranged at the bottom of the shell, and a penetration nail is coaxially fixed on the mounting block, and also comprises an impact mechanism, a release mechanism and a parallel boosting mechanism; through the arrangement of an annular tube, an L-shaped plate, an oil storage cylinder and an electric push rod, compared with the method of manually removing the penetration nail, this method is less destructive to the hole, and during the extraction process, the amount of sand and gravel scraped off is reduced as much as possible, and when drilling, the L-shaped plate can also play the role of positioning support, thereby preventing the penetrometer body from being tilted due to a large impact force during drilling, thereby improving the linear accuracy of the hole.

Description

Technical Field

[0001] The invention relates to the technical field of grouting reinforcement effect detection, in particular to a grouting reinforcement effect detection device for phase change grouting materials of water-rich freeze-thaw strata. Background Art

[0002] Testing the reinforcement effect of phase change grouting materials usually requires the combined use of multiple testing methods and equipment to comprehensively evaluate their performance under different conditions.

[0003] For example, a Chinese patent application numbered CN202310672515.5 discloses a penetration-type mortar strength tester, which includes a main unit, a penetrometer body, handles disposed on the top of both sides of the penetrometer body, and an impact member disposed in the inner cavity of the penetrometer body. The penetration-type mortar strength tester starts the motor to raise and tighten the impact rod, and then uses the rapid drop of the impact spring rebound force to drive the measuring pin on the impact rod to insert into the mortar to form a measuring hole, and then uses a measuring table to extend into the measuring hole for testing. By operating in this way, there is no need for the operator to manually operate with a force lever, and the measuring hole can be quickly and labor-savingly made with the penetrometer body.

[0004] For example, a Chinese patent with application number CN202110294705.9 discloses a penetrometer for detecting the bearing capacity of engineering construction foundations, including a body, a handle fixedly installed on the top of the body, and a penetration rod movably mounted in the middle of the body. The penetrometer for detecting the bearing capacity of engineering construction foundations cooperates with the wedge block of the interference shaft through a pressure plate, and the pressure plate drives the interference shaft to reach the top and cooperates with a convex block, so that when the pressure plate is lowered to the lowest point, under the action of the compression spring, it can be interference-fitted with the interference shaft, and after the pressure plate moves up, it can drive one end of the lever to move up, and transmit to the transmission gear, drive the pull rope to wind, pull the pressure plate upward, and then reduce the force applied by the worker when pressing down the compression spring, when the pressure plate moves up to the maximum distance, the cooperating convex block can push the interference shaft to move down and disengage, and move down under the action of gravity at the longer end of the lever, the pull rope is relaxed, and does not affect the descent of the pressure plate to drive the measuring nail to punch.

[0005] However, the prior art similar to the above still has the following problems:

[0006] 1. When the penetration meter is in use, the penetration nail is driven into the interior of the mortar to be tested by the elastic force of the spring. When it is pulled out, the side wall of the penetration nail will scrape off the gravel in the hole. Especially for ground use scenarios, the scraped gravel will fall to the deepest part of the hole under the action of gravity, affecting the detection accuracy of the depth detector for the hole.

[0007] 2. After the penetration nail has made a hole, the existing method of cleaning the hole basically adopts a rubber holster with a slender suction nozzle, and the hole is cleaned by squeezing the rubber holster, but the cleaning power of this equipment is limited, and it basically adopts a compressed air blowing method for cleaning, which is not only inefficient, but also has a poor cleaning effect on the hole when used on the ground. Summary of the invention

[0008] In view of the above problems, the present invention provides a device for detecting the grouting reinforcement effect of phase change grouting materials in water-rich freeze-thaw strata, which has the advantages of easy operation, high hole accuracy and self-cleaning effect.

[0009] The technical solution is that the present invention includes a penetrometer body, the penetrometer body includes a shell and handles on both sides of the shell, a mounting block that slides up and down is coaxially arranged at the bottom of the shell, a penetration nail is coaxially fixed on the mounting block, and further includes:

[0010] An impact mechanism, the impact mechanism is located in the housing, the impact mechanism includes a compression spring and an impact rod that moves up and down in the housing, the impact rod is coaxially arranged with the housing, one end of the impact rod is fixedly connected to the mounting block, and is used to provide power for the movement of the penetration nail;

[0011] A release mechanism, the release mechanism is arranged on one side of the impact mechanism, the release mechanism includes a trigger handle located below the handle, and the impact rod drives the penetration nail to be inserted into the interior of the mortar to be tested by releasing the compression spring;

[0012] A parallel boosting mechanism is arranged at one end of the penetrometer body close to the penetration nail. The parallel boosting mechanism includes an annular tube fixed coaxially with the shell, and a plurality of circumferentially evenly distributed fixed plates are fixedly connected below the annular tube. The plurality of fixed plates are respectively sealed and slidably connected with L-shaped plates. The relative position change between the fixed plate and the L-shaped plate is controlled to drive the penetrometer body to move linearly, so that the penetration nail can be smoothly separated from the hole.

[0013] Preferably, the parallel booster mechanism also includes an oil storage cylinder fixedly connected to one side of the shell, a piston rod sliding up and down is arranged in the oil storage cylinder, an electric push rod is fixed to one end of the piston rod passing through the oil storage cylinder, a plurality of oil inlet pipes and a first oil outlet pipe are arranged on the annular tube, the L-shaped plate is a hollow structure and is provided with an oil inlet, the first oil outlet pipe is connected to the oil inlet through a hose, a second oil outlet pipe is arranged at the bottom of the oil storage cylinder, the second oil outlet pipe is connected to a plurality of oil inlet pipes through a hose, a control button is arranged on the shell, and the control button is connected to the electric push rod electrical signal.

[0014] Preferably, there are three control buttons corresponding to fast speed, medium speed and slow speed respectively, and the pushing speed of the electric push rod can be controlled by pressing different control buttons.

[0015] Preferably, a cavity is provided at the bottom of the shell, a plurality of openings connected to the cavity are provided at the top of the mounting block, and the plurality of openings are evenly distributed around the circumference; the piston rod divides the interior of the oil storage cylinder into an upper gas portion and a lower oil body portion; a connecting pipe connected to the gas portion is provided at the top of the oil storage cylinder; a fixing pipe is fixedly connected to one side of the shell, a flow channel connected to the fixing pipe and the cavity is provided on the shell, the fixing pipe is connected to the connecting pipe through a hose, and a plurality of connecting grooves parallel to the axis of the penetration nail are provided on the penetration nail, and the plurality of connecting grooves are evenly distributed around the circumference.

[0016] Preferably, the penetration nail includes a cone portion and a straight rod portion, the connecting groove is located on the straight rod portion, and a plurality of equally distributed annular grooves are provided at one end of the straight rod portion close to the cone portion, annular strips are provided between the plurality of annular grooves, and the length of the annular groove does not exceed half of the straight rod portion.

[0017] Preferably, a telescopic sleeve matching the penetration nail is coaxially arranged at the bottom of the mounting block, and the inner diameter of the telescopic sleeve is consistent with the maximum diameter of the straight rod portion.

[0018] Preferably, the multiple L-shaped plates are fixedly connected to the same connecting strip, and the cross-section of the connecting strip is a rounded rectangle, which is used to assist the multiple L-shaped plates to move synchronously.

[0019] Preferably, a plurality of top plates which are evenly distributed are fixedly connected to the connecting strip, and one end of the top plate away from the connecting strip is in contact with the bottom of the shell.

[0020] Preferably, the oil inlet pipe and the first oil outlet pipe are evenly distributed on the circumference of the annular pipe, and a plurality of oil inlet pipes and the first oil outlet pipes are staggered.

[0021] Preferably, the height of the cavity is consistent with the maximum moving distance of the impact rod.

[0022] Compared with the existing known technologies, the technical solution provided by the present invention has the following significant effects:

[0023] 1. Compared with the manual removal of the penetration nail, this method is less destructive to the hole through the settings of the annular tube, L-shaped plate, oil storage cylinder and electric push rod. During the extraction process, the amount of scraped gravel is reduced as much as possible. At the same time, when drilling, the L-shaped plate can also play a positioning support effect to prevent the main body of the penetration instrument from being tilted due to a large impact force during drilling, thereby improving the linear accuracy of the hole.

[0024] 2. Through the settings of the cavity, opening, oil storage cylinder and connecting groove, when the electric push rod is started, the gas part is like a syringe that performs an inhalation action during the downward movement of the piston rod, so that a relative negative pressure is formed in the cavity. During the process of pulling out the penetration nail, some fine gravel will be located in the connecting groove under the action of the negative pressure gas, and finally brought out by the penetration nail, which greatly improves the cleaning effect of the hole and reduces the workload of using rubber holsters to clean the hole. When testing on the ground, the cleaning effect inside the hole is also better than the existing cleaning method.

[0025] 3. Through the settings of annular grooves, annular strips and connecting grooves, when the penetration nail is pulled out, the straight rod will bring the scraped fine gravel into the first adjacent annular groove, and the subsequent annular strips will continue to clean the holes and scrape the gravel into the corresponding annular grooves respectively. At the same time, with the cooperation of negative pressure gas and connecting grooves, the cleaning effect of the holes is improved, thereby ensuring the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0027] Figure 2 It is a three-dimensional schematic diagram of the oil storage cylinder and the connecting piece in the present invention.

[0028] Figure 3 It is a three-dimensional cross-sectional view of the present invention.

[0029] Figure 4 It is a three-dimensional schematic diagram of the annular tube and the connecting piece in the present invention.

[0030] Figure 5 It is a cross-sectional view of the annular tube and the connecting piece in the present invention.

[0031] Figure 6 The present invention Figure 3 A schematic diagram of the enlarged structure at point A in the middle.

[0032] Figure 7 It is a three-dimensional schematic diagram of the penetration nail in the present invention.

[0033] Explanation of the symbols in the schematic diagram:

[0034] 1. Penetrometer body; 2. Shell; 3. Handle; 4. Mounting block; 5. Penetration nail; 6. Compression spring; 7. Impact rod; 8. Trigger handle; 9. Annular tube; 10. Oil inlet pipe; 11. First oil outlet pipe; 12. Fixed plate; 13. L-shaped plate; 14. Oil inlet; 15. Oil storage cylinder; 16. Piston rod; 17. Electric push rod; 18. Second oil outlet pipe; 19. Cavity; 20. Opening; 21. Gas part; 22. Oil body part; 23. Connecting pipe; 24. Fixed pipe; 25. Flow channel; 26. Connecting groove; 27. Conical part; 28. Straight rod part; 29. ​​Annular groove; 30. Annular strip; 31. Telescopic sleeve; 32. Connecting strip; 33. Top plate. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0036] Example 1

[0037] When using a penetrometer to detect the reinforcement effect of the grouting material, the penetration nail 5 is driven into the interior of the mortar to be tested by the elastic force of the spring. When the penetration nail 5 is pulled out, the side wall of the penetration nail 5 will scrape off the gravel in the hole. Especially for ground use scenarios, the scraped gravel will fall to the deepest part of the hole under the action of gravity, affecting the detection accuracy. This embodiment is specially invented to solve the above problem.

[0038] refer to Figures 1 to 3 As shown, the penetrometer includes a main body 1, which includes a shell 2 and handles 3 on both sides of the shell 2. A mounting block 4 that slides up and down is coaxially arranged at the bottom of the shell 2, and a penetration nail 5 is coaxially fixed on the mounting block 4. It also includes an impact mechanism, a release mechanism and a parallel boosting mechanism.

[0039] Among them, the impact mechanism is located in the shell 2, and the impact mechanism includes a compression spring 6 and an impact rod 7 that moves up and down in the shell 2. The impact rod 7 is coaxially arranged with the shell 2, and one end of the impact rod 7 is fixedly connected to the mounting block 4 to provide power for the movement of the penetration nail 5.

[0040] The release mechanism is arranged on one side of the impact mechanism and is used in conjunction with the impact mechanism. The release mechanism includes a trigger handle 8 located below the handle 3. By releasing the compression spring 6, the impact rod 7 drives the penetration nail 5 to be inserted into the interior of the mortar to be tested. The release mechanism and the impact mechanism are both existing technologies and will not be described in detail here.

[0041] refer to Figure 2 , Figure 3 and Figure 4 As shown, the parallel boosting mechanism is arranged at one end of the penetrometer body 1 close to the penetration nail 5, and the parallel boosting mechanism includes an annular tube 9 coaxially fixed to the shell 2, and a plurality of circumferentially evenly distributed fixed plates 12 are fixedly connected below the annular tube 9, and L-shaped plates 13 are respectively sealed and slidably connected to the plurality of fixed plates 12. By controlling the relative position change between the fixed plates 12 and the L-shaped plates 13 to drive the penetrometer body 1 to move linearly, the penetration nail 5 can be smoothly separated from the hole. The parallel boost mechanism also includes an oil storage cylinder 15 fixedly connected to one side of the shell 2, and a piston rod 16 that slides up and down is arranged in the oil storage cylinder 15. An electric push rod 17 is fixed to one end of the piston rod 16 that passes through the oil storage cylinder 15. A plurality of oil inlet pipes 10 and a first oil outlet pipe 11 are arranged on the annular tube 9. The L-shaped plate 13 is a hollow structure and is provided with an oil inlet 14. The first oil outlet pipe 11 is connected to the oil inlet 14 through a hose. A second oil outlet pipe 18 is arranged at the bottom of the oil storage cylinder 15, and the second oil outlet pipe 18 is connected to the plurality of oil inlet pipes 10 through a hose. At the same time, in order to ensure that the oil intake inside the plurality of L-shaped plates 13 is in a relatively balanced state, the oil inlet pipe 10 and the first oil outlet pipe 11 are evenly distributed on the circumference of the annular tube 9, and the plurality of oil inlet pipes 10 and the first oil outlet pipe 11 are staggered. A control button is arranged on the shell 2, and the control button is connected to the electric push rod 17 by electrical signals. A control unit is arranged in the control button, which can send a command signal to the electric push rod 17.

[0042] refer to Figure 4 and Figure 5 As shown, in order to further ensure that the multiple L-shaped plates 13 can move synchronously and improve the stability of the parallel boosting mechanism, the multiple L-shaped plates 13 are fixedly connected to the same connecting strip 32, and the cross-section of the connecting strip 32 is a rounded rectangle to assist the multiple L-shaped plates 13 to move synchronously; it should also be noted that a plurality of equidistantly distributed top plates 33 are fixedly connected to the connecting strip 32, and one end of the top plate 33 away from the connecting strip 32 is in contact with the bottom of the shell 2. This arrangement is to ensure that each time the penetration nail 5 is installed, the ends of the penetration nail 5 are on the same horizontal line to prevent measurement errors.

[0043] It also needs to be further explained that there are three control buttons corresponding to fast, medium and slow speeds respectively. By pressing different control buttons, the pushing speed of the electric push rod 17 is controlled, mainly for the penetration depth of the penetration nail 5. The smaller the injection depth of the penetration nail 5, the faster the speed can be selected.

[0044] During specific use, the penetration nail 5 is fixed on the mounting block 4, and it is ensured that the end of the penetration nail 5 is on the same horizontal line with the bottom surface of the L-shaped plate 13, and the plane to be measured is polished to ensure that there are no obvious protrusions or debris on the plane to be measured. Then, the user holds the handle 3 with both hands. When the penetrometer body 1 is relatively vertical to the plane to be measured, the user can directly release the limit of the compression spring 6 and the impact rod 7 by triggering the handle 8. After the penetration nail 5 has drilled the hole in the plane to be measured, press the control button to start the electric push rod 17, and use one hand to assist in positioning the L-shaped plate 13 to prevent the penetrometer body 1 from shifting up and down. The hydraulic oil inside the oil storage cylinder 15 enters the interior of the L-shaped plate 13 through the annular tube 9. At this time, the multiple fixed plates 12 drive the penetrometer body 1 to move upward under the push of the hydraulic oil until the penetration nail 5 is completely out of the hole.

[0045] In summary, compared with the manual removal of the penetration nail 5, the annular tube 9, the L-shaped plate 13, the oil storage cylinder 15 and the electric push rod 17 are configured, and this method is less destructive to the hole. During the extraction process, the amount of scraped gravel is reduced as much as possible. At the same time, when drilling, the L-shaped plate 13 can also play a positioning and supporting role, preventing the penetration instrument body 1 from being tilted due to a large impact force during drilling, thereby improving the linear accuracy of the hole.

[0046] Example 2

[0047] It is found in actual use that after the penetration nail 5 has punched a hole, the existing method for cleaning the hole basically adopts a rubber holster with a slender suction nozzle, and the hole is cleaned by squeezing the rubber holster, but the cleaning power of this equipment is limited, and it basically adopts a compressed air blowing method for cleaning, which is not only inefficient, but also has a poor cleaning effect on the hole when used on the ground. Further improvements are made on the basis of the above embodiments.

[0048] refer to Figure 6 and Figure 7 As shown, a cavity 19 is provided at the bottom of the shell 2, and a plurality of openings 20 connected to the cavity 19 are provided on the top of the mounting block 4, and the plurality of openings 20 are evenly distributed around the circumference. In order to ensure that the connecting groove 26 of the penetration nail 5 is always in a connected state with the cavity 19, the height of the cavity 19 is consistent with the maximum moving distance of the impact rod 7, and the piston rod 16 divides the interior of the oil storage cylinder 15 into an upper gas portion 21 and a lower oil body portion 22. A connecting pipe 23 connected to the gas portion 21 is provided on the top of the oil storage cylinder 15, and a fixing pipe 24 is fixedly connected to one side of the shell 2. A flow channel 25 connected to the fixing pipe 24 and the cavity 19 is provided on the shell 2, and the fixing pipe 24 is connected to the connecting pipe 23 through a hose. A plurality of connecting grooves 26 parallel to the axis of the penetration nail 5 are provided on the penetration nail 5, and the plurality of connecting grooves 26 are evenly distributed around the circumference.

[0049] During use, when the electric push rod 17 is started, during the downward movement of the piston rod 16, the gas portion 21 acts like a syringe performing an inhalation action, which can form a relative negative pressure in the cavity 19. During the process of pulling out the penetration nail 5, some fine gravel will be located in the connecting groove 26 under the action of the negative pressure gas, and will eventually be brought out by the penetration nail 5.

[0050] In summary, the cleaning effect of the holes is greatly improved through the settings of the cavity 19, the opening 20, the oil storage cylinder 15 and the connecting groove 26. Not only is there no need to use rubber holsters too much to clean the holes, but when testing on the ground, the cleaning effect inside the holes is also better than the existing cleaning methods.

[0051] Example 3

[0052] Considering that only using negative pressure and connecting grooves 26 does not achieve the best cleaning effect for the gravel in the hole, the gravel on the edges of two adjacent connecting grooves 26 cannot enter the interior of the connecting grooves 26, and some gravel still remains in the hole, further improvements are made on the basis of the above embodiments.

[0053] refer to Figure 7 As shown, the penetration nail 5 includes a cone portion 27 and a straight rod portion 28, the connecting groove 26 is located on the straight rod portion 28, and a plurality of equally distributed annular grooves 29 are provided at one end of the straight rod portion 28 close to the cone portion 27, and annular strips 30 are provided between the plurality of annular grooves 29, and the opening length of the annular grooves 29 does not exceed half of the straight rod portion 28.

[0054] During use, when the penetration nail 5 is moved out of the hole with the assistance of the parallel boosting mechanism, a part of the fine gravel enters the connecting groove 26 under the action of the negative pressure of the gas, and the other part scrapes off the gravel attached to the inner wall of the hole through the edge of the straight rod portion 28. As the penetration nail 5 continues to move, the scraped gravel will enter the annular groove 29 and be collected. During the movement of the penetration nail 5, the annular strip 30 will also clean the inner wall and process the loose gravel on the inner wall.

[0055] In summary, through the annular groove 29, the annular strip 30 and the connecting groove 26, when the penetration nail 5 is pulled out, the straight rod portion 28 brings the scraped fine gravel into the first annular groove 29 adjacent to it, and the subsequent annular strip 30 cleans the holes and scrapes the gravel into the corresponding annular grooves 29 respectively. At the same time, with the cooperation of the negative pressure gas and the connecting groove 26, the holes are cleaned to the greatest extent.

[0056] Example 4

[0057] Considering that the penetration nail 5 does not completely penetrate into the interior of the mortar to be tested every time, when the connection groove 26 of a part of the penetration nail 5 is in direct contact with the outside air, the negative pressure formed inside the hole will be weakened, reducing the cleaning effect, so further improvements are made in the above embodiment.

[0058] refer to Figure 2 and Figure 3 As shown, a telescopic sleeve 31 matching with the penetration nail 5 is coaxially arranged at the bottom of the mounting block 4 , and the inner diameter of the telescopic sleeve 31 is consistent with the maximum diameter of the straight rod portion 28 .

[0059] During use, one end of the telescopic sleeve 31 is always fixedly connected to the mounting block 4, and the other end is in an active telescopic state. When the penetration instrument body 1 drives the penetration nail 5 into the inside of the plane to be measured, the end of the telescopic sleeve 31 contacts the plane to be measured. After the electric push rod 17 is started, under the restriction of the telescopic sleeve 31, the connecting groove 26 inside the hole still has a certain negative pressure condition, which solves the problem that the negative pressure formed inside the hole will be weakened when the connecting groove 26 is in direct contact with the outside air, thereby ensuring the cleaning effect.

[0060] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A device for detecting the grouting reinforcement effect of a phase change grouting material for a water-rich freeze-thaw stratum, comprising a penetrometer body (1), the penetrometer body (1) comprising a shell (2) and handles (3) on both sides of the shell (2), a mounting block (4) which slides up and down is coaxially arranged at the bottom of the shell (2), a penetration nail (5) is coaxially fixed on the mounting block (4), and the device is characterized in that: Also includes: An impact mechanism, the impact mechanism being located in the housing (2), the impact mechanism comprising a compression spring (6) and an impact rod (7) that moves up and down in the housing (2), the impact rod (7) being coaxially arranged with the housing (2), one end of the impact rod (7) being fixedly connected to the mounting block (4) for providing power for the movement of the penetration nail (5); A release mechanism, the release mechanism being arranged on one side of the impact mechanism, the release mechanism comprising a trigger handle (8) located below the handle (3), and allowing the impact rod (7) to drive the penetration nail (5) to be inserted into the interior of the mortar to be tested by releasing the compression spring (6); A parallel boosting mechanism, the parallel boosting mechanism being arranged at one end of the penetrometer body (1) close to the penetration nail (5), the parallel boosting mechanism comprising an annular tube (9) fixed coaxially with the shell (2), a plurality of circumferentially evenly distributed fixing plates (12) being fixedly connected below the annular tube (9), the plurality of fixing plates (12) being respectively sealed and slidably connected to an L-shaped plate (13), and the relative position change between the fixing plate (12) and the L-shaped plate (13) being controlled to drive the penetrometer body (1) to move linearly, so that the penetration nail (5) is smoothly released from the hole; The parallel boost mechanism further comprises an oil storage cylinder (15) fixedly connected to one side of the housing (2), a piston rod (16) sliding up and down is arranged in the oil storage cylinder (15), an electric push rod (17) is fixed to one end of the piston rod (16) penetrating the oil storage cylinder (15), a plurality of oil inlet pipes (10) and a first oil outlet pipe (11) are arranged on the annular tube (9), the L-shaped plate (13) is a hollow structure and is provided with an oil inlet (14), the first oil outlet pipe (11) is connected to the oil inlet (14) through a hose, a second oil outlet pipe (18) is arranged at the bottom of the oil storage cylinder (15), the second oil outlet pipe (18) is connected to the plurality of oil inlet pipes (10) through a hose, and a control button is arranged on the housing (2), and the control button is connected to the electric push rod (17) by electrical signals; The bottom of the shell (2) is provided with a cavity (19), the top of the mounting block (4) is provided with a plurality of openings (20) in communication with the cavity (19), the plurality of openings (20) being evenly distributed around the circumference, the piston rod (16) divides the interior of the oil storage cylinder (15) into an upper gas portion (21) and a lower oil body portion (22), the top of the oil storage cylinder (15) is provided with a connecting pipe (23) in communication with the gas portion (21), one side of the shell (2) is fixedly connected with a fixing pipe (24), the shell (2) is provided with a flow channel (25) in communication with the fixing pipe (24) and the cavity (19), the fixing pipe (24) and the connecting pipe (23) are connected via a hose, and the penetration nail (5) is provided with a plurality of connecting grooves (26) parallel to the axis of the penetration nail (5), the plurality of connecting grooves (26) being evenly distributed around the circumference.

2. The grouting reinforcement effect detection device of a phase change grouting material for a water-rich freeze-thaw stratum according to claim 1 is characterized by: The number of the control buttons is three and they correspond to fast speed, medium speed and slow speed respectively. By pressing different control buttons, the pushing speed of the electric push rod (17) is controlled.

3. A grouting reinforcement effect detection device for phase change grouting materials in water-rich freeze-thaw strata according to claim 2, characterized in that: The penetration nail (5) comprises a cone portion (27) and a straight rod portion (28), the connection groove (26) being located on the straight rod portion (28), a plurality of equally spaced annular grooves (29) being provided at one end of the straight rod portion (28) close to the cone portion (27), annular strips (30) being provided between the plurality of annular grooves (29), and the length of the annular grooves (29) being no longer than half of the length of the straight rod portion (28).

4. The grouting reinforcement effect detection device of a phase change grouting material for a water-rich freeze-thaw stratum according to claim 3 is characterized by: A telescopic sleeve (31) matching the penetration nail (5) is coaxially arranged at the bottom of the mounting block (4), and the inner diameter of the telescopic sleeve (31) is consistent with the maximum diameter of the straight rod portion (28).

5. The device for detecting the grouting reinforcement effect of phase change grouting material in water-rich freeze-thaw strata according to claim 4 is characterized in that: The plurality of L-shaped plates (13) are fixedly connected to a same connecting strip (32); the cross section of the connecting strip (32) is a rounded rectangular shape and is used to assist the synchronous movement of the plurality of L-shaped plates (13).

6. The device for detecting the grouting reinforcement effect of phase change grouting material in water-rich freeze-thaw strata according to claim 5, characterized in that: A plurality of top plates (33) distributed at equal intervals are fixedly connected to the connecting strip (32), and one end of the top plate (33) away from the connecting strip (32) is in contact with the bottom of the housing (2).

7. The device for detecting the grouting reinforcement effect of phase change grouting material in water-rich freeze-thaw strata according to claim 6 is characterized in that: The oil inlet pipe (10) and the first oil outlet pipe (11) are evenly distributed around the circumference of the annular pipe (9), and a plurality of oil inlet pipes (10) and first oil outlet pipes (11) are arranged in an alternating manner.

8. The device for detecting the grouting reinforcement effect of phase change grouting material in water-rich freeze-thaw strata according to claim 7, characterized in that: The height of the cavity (19) is consistent with the maximum moving distance of the impact rod (7).

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