Waterproofing and leakage-stopping test system and method for composite grouting material

Abstract

A waterproofing and leakage-stopping test system for a composite grouting material, comprising a test chamber (37). A fixed vertical plate (8) and a movable vertical plate (40) are provided in the test chamber, a gap for simulating a seepage fracture being reserved between the fixed vertical plate and the movable vertical plate. The movable vertical plate can move relative to the test chamber, enabling the size of the gap between the fixed vertical plate and the movable vertical plate to be changed. A rotatable patterned plate strip (41) is provided on the face of the movable vertical plate facing the gap, the patterned plate strip being provided with different patterned surfaces; and the rotating of the patterned plate strip enables the different patterned surfaces to face the gap. The test system allows for testing verification of the waterproofing and leakage-stopping effect of a slurry for different seepage fracture widths and in different seepage environments. Further provided is a waterproofing and leakage-stopping test method for a composite grouting material.

Description

A waterproof and leak-proof testing system and method for composite grouting materials

[0001] The present invention claims priority to the Chinese patent application filed with the Patent Office of China on September 25, 2023, with application number 202311240816.7 and invention name “A test system and method for waterproofing and plugging composite grouting materials”, the entire contents of which are incorporated by reference into the present invention. Technical Field

[0002] The present invention relates to the technical field of underground waterproofing, and in particular to a waterproofing and leak-proofing testing system and method for composite grouting materials. Background Art

[0003] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0004] Leakage control in underground projects utilizes a comprehensive approach combining prevention, drainage, interception, and plugging. When addressing leaks, the order should be "small first, large later; easy first, difficult later; treating the roof first, then the side walls and floor; and spot seepage first, then the back seepage." Grouting is a commonly used measure for leak control in underground structures. Grouting is applied to the leaking area based on the leak's location and severity. In recent years, underground waterproofing and plugging have received increasing attention and research. Grouting has been applied to underground leak control in many projects, but the results have been less than ideal. Currently, there is limited research on the quantitative relationship between the material mix ratio of the grouting slurry and the width of the seepage cracks. Experimental research on slurry waterproofing and plugging technology is still in its infancy. Furthermore, current testing equipment for slurry waterproofing and plugging is mostly fixed, and the simulated seepage crack width and seepage environment cannot be modified. This inability to simulate different seepage environments and different seepage crack widths significantly limits the effectiveness of slurry waterproofing and plugging under varying seepage crack widths and seepage widths.

[0005] Summary of the Invention

[0006] In order to solve the above problems, the present invention proposes a test system and method for waterproofing and plugging of composite grouting materials, which can simulate different seepage crack widths and different seepage environments, so as to test and verify the waterproofing and plugging effect of slurry in different seepage crack widths and different seepage environments.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] First, a composite grouting material waterproofing and leak-proofing test system is proposed, comprising a test box; a fixed vertical plate and a movable vertical plate are arranged in the test box, and a gap simulating a seepage crack is left between the fixed vertical plate and the movable vertical plate; the movable vertical plate can move relative to the test box, thereby changing the size of the gap between the fixed vertical plate and the movable vertical plate; a rotatable patterned plate belt is provided on the side of the movable vertical plate facing the gap, and different patterned surfaces are provided on the patterned plate belt; the patterned plate belt can be rotated so that different patterned surfaces face the gap.

[0009] Secondly, a test method for waterproofing and plugging of composite grouting materials is proposed, including:

[0010] Move the movable vertical plate so that the gap between the movable vertical plate and the fixed vertical plate meets the test requirements;

[0011] Turn the tread plate belt so that the tread surface required by the test faces the gap;

[0012] By injecting water and slurry into the gap between the movable vertical plate and the fixed vertical plate, a waterproof and leak-proofing test is performed on the slurry.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention forms a gap simulating seepage cracks by using fixed vertical plates and movable vertical plates, and arranges the movable vertical plates to be movable relative to the test box, so that the width of the gap between the fixed vertical plates and the movable vertical plates can be changed by moving the movable vertical plates, thereby achieving simulation of different seepage crack widths; by arranging a rotatable patterned plate belt on the movable vertical plate, different patterned surfaces are arranged on the patterned plate belt, and by rotating the patterned plate belt, different patterned surfaces can be directed toward the gap, thereby achieving simulation of different seepage environments; thereby, the waterproof and leak-proofing effects of slurry in different seepage crack widths and different seepage environments can be tested and verified.

[0015] 2. The present invention sets the water tank on a lifting platform, which can drive the water tank to move up and down through the lifting platform, thereby simulating seepage at different water levels and verifying the waterproof and leak-proofing effect of the slurry on seepage at different water levels.

[0016] 3. The present invention provides a size scale on the inner wall of the test box, and the width of the gap between the fixed vertical plate and the movable vertical plate can be accurately adjusted by the scale.

[0017] 4. The present invention is provided with a crank, which can drive the patterned plate belt to rotate by controlling the crank, making operation convenient.

[0018] Advantages of additional aspects of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings in the specification, which constitute a part of this application, are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0020] FIG1 is a schematic diagram of the overall structure of the system disclosed in the embodiment;

[0021] FIG2 is a diagram showing the expanded state of the intelligent water supply system disclosed in the embodiment;

[0022] FIG3 is a diagram of the intelligent water supply system in a folded state according to the embodiment;

[0023] FIG4 is a schematic diagram of a retractable top support structure disclosed in an embodiment;

[0024] FIG5 is a schematic diagram of the vertical scale and scale limiting hole structure disclosed in the embodiment;

[0025] FIG6 is a top view of the lower base disclosed in the embodiment;

[0026] FIG7 is a side sectional view of the lower base disclosed in the embodiment;

[0027] FIG8 is a front view of the test box system disclosed in the embodiment;

[0028] FIG9 is a perspective view of the test box system disclosed in the embodiment;

[0029] FIG10 is a left side view of the test box system disclosed in the embodiment;

[0030] FIG11 is a schematic diagram of the water inlet structure of the test box system disclosed in the embodiment;

[0031] FIG12 is a cross-sectional view of the test chamber system disclosed in the embodiment.

[0032] Among them: 1. Water tank, 2. Upper platform, 3. Retractable top support, 4. Limit hole, 5. Intelligent water level controller, 6. Water pipe connection port, 7. Vertical scale, 8. Telescopic bracket, 9. Lower base, 10. Movable shaft, 11. Limit bolt, 12. Crank handle, 13. Upper fixed plate, 14. Left end fixed plate, 15. Flow meter, 16. Water inlet box, 17. Grouting hole, 18. Fixed vertical plate, 19. Lower fixed plate, 20. Right end fixed plate, 21. Water outlet pipe, 22. Telescopic support upper section, 23. Telescopic support middle section , 24. Telescopic support bottom section, 25. Bolt, 26. Bolt, 27. Bearing, 28. Lower limit hole of scale, 29. Upper limit hole of scale, 30. Telescopic top support folding area, 31. Movable shaft track, 32. Left scale, 33. Horizontal threaded rod, 34. Vertical threaded rod, 35. Right scale, 36. Water pipe connection port, 37. Positioning threaded rod, 38. Water inlet, 39. Positioning plate, 40. Movable vertical plate, 41. Patterned plate belt, 42. Telescopic bracket sliding track, 43. Rotating shaft, 44. Support plate. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0035] Example 1

[0036] In this embodiment, a composite grouting material waterproofing and leak-proofing test system is disclosed, comprising a test box; a fixed vertical plate and a movable vertical plate are arranged in the test box, and a gap simulating a seepage crack is left between the fixed vertical plate and the movable vertical plate; the movable vertical plate can move relative to the test box, thereby changing the size of the gap between the fixed vertical plate and the movable vertical plate; a rotatable patterned plate belt is provided on the side of the movable vertical plate facing the gap, and different patterned surfaces are provided on the patterned plate belt; the patterned plate belt can rotate to make different patterned surfaces face the gap; grouting holes are provided on the fixed vertical plate; a water inlet and a water outlet are provided on the test box; the grouting holes, the water inlet and the water outlet are all connected to the gap between the fixed vertical plate and the movable vertical plate.

[0037] The grouting hole is connected to the slurry injection system, and the slurry is injected into the space between the fixed vertical plate and the movable vertical plate through the slurry injection system.

[0038] The water inlet and the water outlet are located at both ends of the test box respectively. The water inlet is connected to the water tank. Water is injected into the space between the fixed vertical plate and the movable vertical plate through the water tank, and the water between the fixed vertical plate and the movable vertical plate flows out through the water outlet.

[0039] The fixed vertical plates and the movable vertical plates are sealed on all sides with the inner wall of the test box to prevent water between the fixed vertical plates and the movable vertical plates from seeping out from the connection between the fixed vertical plates and the movable vertical plates and the test box, thereby affecting the test results.

[0040] A thimble is provided on the test box, which can move relative to the test box. One end of the thimble is connected to the movable vertical plate. When the thimble moves relative to the test box, the movable vertical plate is driven to move relative to the test box, thereby changing the size of the gap between the fixed vertical plate and the movable vertical plate.

[0041] In addition, a scale is set on the inner wall of the test box, and the size of the gap between the fixed vertical plate and the movable vertical plate can be determined by the scale, thereby ensuring the accuracy of the gap adjustment.

[0042] As shown in FIG. 1 to FIG. 12 , this embodiment discloses a composite grouting material waterproofing and leak-proofing test system, which includes an intelligent water supply system, a test box system, and a slurry injection system.

[0043] As shown in FIG2-FIG7, the intelligent water supply system includes a water tank 1 and a lifting platform. The water tank 1 is connected to the lifting platform, and the lifting platform can drive the water tank 1 to rise or fall.

[0044] An intelligent water level controller 5 is provided on the water tank 1. A water pipe connection port is provided on the intelligent water level controller 5. Water is injected into the water tank 1 through the water pipe connection port. The intelligent water level controller 5 is placed on the top of the water tank 1 and is connected to the water tank 1 by bolts. The intelligent water level controller 5 is connected to the water source and can control the opening and closing of the water pipe connection port to keep the water level in the water tank 1 unchanged, thereby achieving the effect of stabilizing the water level. The water tank 1 is also connected to the water outlet pipe 21, and the water outlet pipe 21 is also connected to the water inlet 38, so that the water in the water tank 1 can be injected into the gap between the fixed vertical plate and the movable vertical plate.

[0045] A valve is provided on the water outlet pipe 21, and the water flow rate is adjusted by controlling the valve, thereby simulating seepage volumes of different sizes.

[0046] The lifting platform includes a telescopic bracket 8, an upper platform 2 and a lower base 9. The water tank 1 is located on the upper platform 2. One end of the telescopic bracket 8 is connected to the upper platform 2, and the other end is connected to the lower base 9.

[0047] By adjusting the height of the telescopic bracket 8 , the lifting platform can be lifted and lowered, thereby adjusting the water level in the water tank 1 .

[0048] Two connection points connected to the lower base are set at one end of the telescopic bracket 8 connected to the lower base 9, one of the connection points is hinged to one end of the lower base 9, and a movable shaft 10 is set on the other connection point. A movable shaft track 31 and a telescopic bracket sliding track 42 are set on the lower base 9. The movable shaft passes through the movable shaft track 31 and the telescopic bracket sliding track 42, and can move along the movable shaft track 31 and the telescopic bracket sliding track 42, so that the telescopic bracket 8 can be driven to retract and expand by controlling the movable shaft 10, thereby adjusting the height of the lifting platform. A nut is set on the movable shaft 10. When the telescopic bracket 8 is retracted into place, the movable shaft 10 is tightened by the nut.

[0049] In order to ensure the stability of the movable shaft fixation, a plurality of limiting holes 4 are further provided in the middle position of the lower base 9. Adjacent limiting holes 4 are spaced at a set distance, and a limiting bolt 11 is provided in each limiting hole. The limiting bolt can move up and down relative to the limiting hole. When the movable shaft 10 moves into position, the two sides of the movable shaft are fixed by the limiting bolts 11 in the limiting holes on both sides of the movable shaft.

[0050] Preferably, the distance is set to 5 mm and the diameter of the limiting hole is 10 mm.

[0051] In order to ensure the stability of the lifting platform supporting the water tank 1, the intelligent water supply system of this embodiment is also provided with a retractable top support 3, one end of the retractable top support 3 is connected to the lower base 9, and the other end is connected to the upper platform 2. The retractable top support provides support for the upper platform 2 to ensure the stability of the lifting platform supporting the water tank 1.

[0052] The telescopic top support 3 includes a telescopic support upper section 22, a telescopic support middle section 23 and a telescopic support bottom section 24. The telescopic support upper section 22 is sleeved inside the telescopic support middle section 23 and can move axially along the telescopic support middle section 23. The telescopic support middle section 23 is sleeved inside the telescopic support bottom section 24 and can move axially along the telescopic support bottom section 24. A nut is provided at the upper end of the telescopic support middle section 23, and the nut is connected to the bolt 25. A nut is provided at the upper end of the telescopic support bottom section 24, and the nut is connected to the bolt 26. When the telescopic top support 3 is telescoped into place, the telescopic support upper section 22 and the telescopic support middle section 23 are tightened and fixed by tightening the bolts 25 and the bolts 26 to lock the telescopic height of the telescopic top support 3.

[0053] Among them, the upper end of the retractable top support 3 is detachably connected to the upper platform 2, and a bearing 27 is set at the upper end of the retractable top support 3. The bearing 27 is connected to the lower base 9 and can rotate relative to the lower base 9. A retractable top support folding area 30 is also set on the lower base 9. When the retractable top support 3 is needed to provide support for the upper platform 2, the upper end of the retractable top support 3 is connected to the upper platform 2. When the retractable top support 3 is no longer needed to provide support for the upper platform 2, the retractable top support 3 is rotated and folded into the retractable top support folding area 30 by rotating the bearing 27 for convenient storage.

[0054] This embodiment also provides a scale limiting hole on the side of the lifting platform. By connecting the vertical scale 7 with the scale limiting hole, the vertical scale can be placed on the side of the lifting platform, and the water level in the water tank can be measured by the vertical scale.

[0055] Preferably, the vertical ruler is placed on the right side of the lifting platform, and an upper limit hole 29 of the ruler is set on the upper platform 2, and a lower limit hole 28 of the ruler is set on the lower base 9. The vertical ruler is inserted into the upper limit hole 29 and the lower limit hole 28 of the ruler, thereby ensuring the stability of the vertical placement of the vertical ruler 7.

[0056] The dimensions of the upper platform 2 and the lower base 9 are 400mm×300mm×40mm, and they are made of carbon steel. The telescopic bracket is made of 5mm thick, 400mm long, and 100mm wide carbon steel plate. The water tank 1 is a square water tank with dimensions of 300mm×200mm×200mm and is made of polyethylene.

[0057] As shown in Figures 8-12, the test chamber system includes a fixture and a seepage simulation device. The fixture includes the test chamber, and the seepage simulation device includes fixed vertical plates 18, movable vertical plates 40, and patterned plate strips 41. The fixed vertical plates 18, movable vertical plates 40, and patterned plate strips 41 are all placed within the test chamber, and the fixed vertical plates 18 and movable vertical plates 40 are sealed to the inner wall of the test chamber on all sides to prevent water from seeping out from the connection between the fixed vertical plates 18 and the movable vertical plates.

[0058] Preferably, a sealed connection can be achieved by providing a sealing strip at the connection between the fixed vertical plate 18 and the movable vertical plate 40 and the test box.

[0059] The test box body includes an upper fixing plate 13, a lower fixing plate 19, a left end fixing plate 14, a right end fixing plate 20 and a positioning plate 39. The upper fixing plate 13 and the lower fixing plate 19 are respectively located on the upper and lower sides of the test box body. The left ends of the upper fixing plate 13 and the lower fixing plate 19 are connected to the left end fixing plate 14, and the right ends of the upper fixing plate 13 and the lower fixing plate 19 are connected to the right end fixing plate 20. The positioning plate 39 is fixed to the rear end surface of the upper fixing plate 13 and the lower fixing plate 19.

[0060] Preferably, the fixing plate, positioning plate, and vertical plate are all 5 mm thick and made of transparent acrylic. The upper fixing plate 13 and the lower fixing plate 19 have dimensions of 1510 mm x 100 mm; the left fixing plate 14 and the right fixing plate 20 have dimensions of 250 mm x 100 mm.

[0061] The movable vertical plate 40 is placed close to the positioning plate 39, and the fixed vertical plate 18 is placed away from the positioning plate 39. A gap simulating seepage cracks is set between the movable vertical plate 40 and the fixed vertical plate 18, and the movable vertical plate 40 is set to be movable relative to the test box. By moving the movable vertical plate 40, the size of the gap between the fixed vertical plate 18 and the movable vertical plate 40 is changed to achieve simulation of seepage cracks of different widths.

[0062] The upper fixed plate 13 and the lower fixed plate 19 are also connected by a vertical threaded rod 34, and the left end fixed plate 14 and the right end fixed plate 20 are connected by a horizontal threaded rod 33. By applying force to the fixed plates around the movable vertical plate 40 and the fixed vertical plate 18, the two vertical plates are fixed and clamped, ensuring the stability of the movable vertical plate 40 and the fixed vertical plate 18.

[0063] A thimble is provided on the positioning plate 39, and the thimble can move relative to the positioning plate 39. One end of the thimble is connected to the movable vertical plate 40. Through the movement of the thimble, the movable vertical plate 40 is driven to move toward or away from the fixed vertical plate 18, thereby adjusting the size of the gap between the fixed vertical plate 18 and the movable vertical plate 40.

[0064] Among them, the ejector pin can be a positioning threaded rod 37, a threaded hole is set on the positioning plate 39, the threaded hole is threadedly connected to the positioning threaded rod 37, the end of the positioning threaded rod 37 is connected to the movable vertical plate, and the positioning threaded rod 37 is also connected to the nut. By rotating the positioning threaded rod 37, the movable vertical plate 40 is driven to move. When the movable vertical plate 40 moves into place, the positioning threaded rod 37 is fixed by the nut.

[0065] Preferably, the threaded hole is M10, and the adjustment range of the gap between the fixed vertical plate 18 and the movable vertical plate 40 is 1 mm to 20 mm, which can simulate the gap seepage conditions under different working conditions.

[0066] In order to simulate different seepage environments, this embodiment also provides a rotatable patterned plate belt 41 on the side of the movable vertical plate 40 facing the gap, and different patterned surfaces are provided on the patterned plate belt 41 to simulate different seepage environments; the rotation of the patterned plate belt 41 can make different patterned surfaces face the gap.

[0067] In order to prevent the water pressure from causing deformation of the flexible patterned plate strips 41, support plates 44 are provided between the patterned plate strips 41 to prevent deformation.

[0068] Preferably, a support frame is provided on the side of the movable vertical plate 40 facing the gap, and a rotating shaft 43 capable of rotating about its own axis is provided on the support frame. The patterned plate strip 41 is sleeved on the rotating shaft 43. The rotation of the rotating shaft 43 drives the patterned plate strip 41 to rotate, thereby causing different patterned surfaces to face the gap between the fixed vertical plate 18 and the movable vertical plate 40. This allows the seepage surface to be switched without removing the fixed plate, making testing more convenient.

[0069] For ease of operation, in this embodiment, the rotating shaft 43 is connected to the crank 12 , and the rotating shaft 43 can be driven to rotate by the crank 12 , and the crank 12 is located outside the test box.

[0070] Preferably, the crank handle 12 is 100 mm long, and the fixed and movable vertical plates are both 1500 mm long, 250 mm high, and 5 mm thick. This allows for easy observation of the slurry plugging effect and water flow, and can, to a certain extent, prevent the liquid level from rising too high. A 1 mm thick waterproof strip is placed between the two vertical plates and the fixed plate to effectively prevent water from seeping through the gaps between the plates.

[0071] In order to ensure the accuracy of adjusting the gap between the fixed vertical plate and the movable vertical plate, a size scale is provided in the test box in this embodiment, and the size of the gap between the fixed vertical plate and the movable vertical plate can be known through the size scale.

[0072] Preferably, in this embodiment, a left scale 32 is provided on the left side of the test box, and a right scale 35 is provided on the right side of the test box.

[0073] In this embodiment, three grouting holes 17 are further provided on the outer side of the fixed vertical plate, and the diameter of each grouting hole is 10 mm.

[0074] A water inlet 38 and a water outlet are provided on the test box, and the water inlet and the water outlet are respectively located at both ends of the test box. The three grouting holes 17, the water inlet 38 and the water outlet are all connected to the gap between the fixed vertical plate and the movable vertical plate.

[0075] Among them, the outer side of the water inlet 38 is connected to the water inlet box 16, and a water pipe connection port 36 is provided on the water inlet box 16. The water pipe connection port 36 is connected to the water outlet pipe 21, so that the water in the water tank can be injected into the gap between the fixed vertical plate and the movable vertical plate.

[0076] In addition, a flow meter 15 is provided at the water inlet 38 , and the flow rate of water at the water inlet is obtained by the flow meter 15 .

[0077] Preferably, each grouting hole has a diameter of 10 mm. A square water inlet with a height of 15 mm and a width of 10 mm is provided on the left end fixing plate, and a circular water outlet with a radius of 5 mm is provided on the right end fixing plate.

[0078] The slurry injection system of this embodiment consists of a water bucket and a water pump. The water pump is a 28m head 2.0m3 / h centrifugal pump. The water bucket is used to hold the slurry to be tested, and the water bucket can be connected to the grouting hole through the water pump.

[0079] The process of assembling the test box in this embodiment is as follows: pass the vertical threaded rod of the test box through the bolt hole of the lower fixed plate, then place the left end fixed plate on the left side of the lower fixed plate, and then paste the waterproof tape on the upper surface of the lower fixed plate. After pasting the waterproof tape here, determine the position of the fixed vertical plate and the movable vertical plate according to the test design seam width. After installing to the specified position, it is necessary to paste waterproof tape on the left and right sides of the fixed vertical plate and the movable vertical plate. After the movable vertical plate is installed, pass the positioning threaded rod through the bolt hole on the positioning plate to connect it to the movable vertical plate. After pasting the waterproof tape, paste the waterproof tape on the bottom surface of the left and right fixed plates and then install them to the specified position. Then pass the horizontal threaded rod through the bolt holes of the left and right fixed plates. Then install the upper fixed plate to the specified position.

[0080] Simulate the test gap width according to test requirements. Adjust the gap width by rotating the threaded rods, pushing and pulling the movable vertical plate. Once the gap width is adjusted to the desired size, tighten the nuts on the horizontal and vertical threaded rods. Connect the crank to the shaft within the gap on the left-end fixed plate. Rotate the crank according to test requirements to switch the tread plate to the specified tread surface. Once installation is complete, adjust the water tank.

[0081] Adjust the water level according to the test requirements. Place the lifting platform on the level ground. At this time, first place the vertical ruler into the upper limit hole of the ruler on the lifting platform and the lower limit hole of the ruler on the lower base, and then adjust the height of the telescopic bracket by pushing and pulling the movable shaft of the lifting platform. After adjusting to the required height, tighten the nut on the movable shaft, and stabilize the lifting through the friction between the nut and the lower base.

[0082] The height of the platform. At this point, place the limit bolt into the limit hole closest to the movable axis. If the telescopic bracket is too high, open the retractable top support so that its top contacts the reserved slot at the top of the lifting platform. Then tighten the bolts on the retractable top support to fix the height of the retractable top support. After reaching the specified height, place the water tank on the upper platform of the lifting platform and connect the water pipe to the intelligent water level controller on the water tank. Then turn on the water pipe to allow water to flow. At this time, close the valve on the water outlet pipe and check the water tank and valve for leaks.

[0083] Connect the water tank and the test chamber. Connect the outlet pipe to the water pipe connection port and install a flow meter at the water pipe connection port. Then check the test chamber for leaks.

[0084] Open the valve on the outlet pipe and close the outlet of the test chamber. Let water flow into the test chamber. Record the water level in the tank and let it sit for one hour. Then, prepare and mix the slurry.

[0085] Prepare the slurry sample according to the slurry mix ratio required by the test. After the slurry is prepared, connect the water pump to the bucket containing the slurry, then turn on the water pump and check whether it can work normally.

[0086] Check the test chamber for leaks. If not, open the water outlet, adjust the water volume, and then conduct the formal test.

[0087] Connect the water pump to the grouting holes of the test box. According to the test requirements, open the grouting holes that need to be connected, and keep the unconnected grouting holes closed to avoid affecting the results of the normal test.

[0088] Adjust the valve on the outlet pipe to the flow rate required for the test. When the water flow in the water tank reaches a stable state, grouting can be carried out. Turn on the water pump and timer to pump the prepared slurry into the gap between the fixed vertical plate and the movable vertical plate. Observe the water level changes in the test chamber.

[0089] After the slurry enters the gap between the fixed and movable vertical plates, it gradually solidifies, blocking the water flow within the gap. Every 30 or 60 seconds, photos are taken to record changes within the test chamber and information such as grouting pump pressure. After the slurry solidifies, a water level difference will form on both sides of the grouting hole. The difference in water level after the water flow stabilizes is recorded, along with other data such as the time on the timer.

[0090] The area of ​​the gap cross section is obtained by multiplying the width of the gap by the height of the gap (250 mm). Based on the equation flow rate = velocity × area, the velocity of the water flow can be inferred and the plugging effect of the slurry can be evaluated.

[0091] After completing this set of tests, prepare for the next set. Close the valve on the outlet pipe. Open all the outlets of the test chamber. Loosen the nuts on the test chamber's fixing plate, then rotate the positioning nuts to increase the gap width. Then connect the outlet pipe to the test chamber's water inlet and drain the solidified slurry from the chamber. Once all slurry is drained, proceed with the next set of tests.

[0092] After the test, drain the water tank, separate the water tank from the test chamber, fold the lifting platform, remove the water tank, and shut off the water pipes. Loosen the nuts on the test chamber, remove the threaded rods from the fixing plate, and then disassemble the test chamber. Once disassembled, clean the colloid from the test chamber and fold the various panels to place them in the test chamber.

[0093] The test system disclosed in this embodiment can accurately simulate the seepage environment and working conditions under different working conditions. The width of the simulated seepage gap can be adjusted by the movable vertical plate, and the environment of different seepage flow rates can be simulated by adjusting the water level.

[0094] The whole is detachable, which is convenient for installation, disassembly and storage. It can be installed conveniently and quickly when in use, and can be disassembled quickly after use. After disassembly, it can be placed neatly and conveniently, taking up less space.

[0095] A sealing strip is attached between the vertical plate and the fixed plate, which will not affect the observation effect, but also effectively prevent water seepage between the plate-plate contact surfaces and reduce test errors.

[0096] The positioning plate and positioning screw rod are set to accurately move the movable vertical plate. The size scale is engraved on the upper fixed plate to accurately control the gap size.

[0097] Placing a flexible patterned plate strip alongside the movable vertical plate not only allows for better observation of test results but also more closely resembles actual operating conditions. The flexible patterned plate strip is made of a rotatable, flexible material, with different patterns applied to its surface to simulate varying soil particle characteristics. A crank attached to the outside allows for switching between patterned surfaces, enabling the plate to be switched without disassembly.

[0098] There are support plates between the checkered plates, which can effectively prevent the deformation of the flexible checkered plates caused by water pressure.

[0099] The lifting platform and the intelligent water level control valve work together to achieve water head adjustment within 1200mm and control the flow rate through the valve. The combination of the three can approach the seepage conditions under actual working conditions.

[0100] The height of the lifting platform can be adjusted and controlled quickly and easily, and it is easy to store. After the test, it can be folded and stored.

[0101] The top support inside the lifting platform can prevent overturning when the water tank is at a high height, and can be folded and retracted when the water tank is at a low height, without taking up operating space and affecting the retraction of the lifting platform.

[0102] The use of transparent acrylic plate material makes it easy to directly observe the test results.

[0103] Example 2

[0104] In this embodiment, a method for testing waterproofing and leak-proofing of composite grouting materials is disclosed, comprising:

[0105] Move the movable vertical plate so that the gap between the movable vertical plate and the fixed vertical plate meets the test requirements;

[0106] Turn the tread plate belt so that the tread surface required by the test faces the gap;

[0107] By injecting water and slurry into the gap between the movable vertical plate and the fixed vertical plate, a waterproof and leak-proofing test is performed on the slurry.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A composite grouting material waterproofing and plugging test system, characterized in that: It comprises a test box; a fixed vertical plate and a movable vertical plate are arranged in the test box, and a gap simulating seepage cracks is left between the fixed vertical plate and the movable vertical plate; the movable vertical plate can move relative to the test box, so as to change the size of the gap between the fixed vertical plate and the movable vertical plate; a rotatable patterned plate belt is arranged on the side of the movable vertical plate facing the gap, and different patterned surfaces are arranged on the patterned plate belt; the patterned plate belt can be rotated so that different patterned surfaces face the gap.

2. A composite grouting material waterproofing and leak-proofing test system as claimed in claim 1, characterized in that: The four sides of the fixed vertical plate and the movable vertical plate are sealed and connected to the inner wall of the test box.

3. A composite grouting material waterproofing and plugging test system as claimed in claim 1, characterized in that: A thimble is arranged on the test box body, and the thimble can move relative to the test box body. One end of the thimble is connected to the movable vertical plate. When the thimble moves relative to the test box body, the movable vertical plate is driven to move relative to the test box body, thereby changing the size of the gap between the fixed vertical plate and the movable vertical plate.

4. A composite grouting material waterproofing and leak-proofing test system as claimed in claim 1, characterized in that: A support frame is arranged on one side of the movable vertical plate facing the gap, and the rotating shaft is connected with the support frame and can rotate around its own axis.

5. A composite grouting material waterproofing and leak-proofing test system as claimed in claim 4, characterized in that: The rotating shaft is connected to a crank, and the rotating shaft can be driven to rotate by the crank, and the crank is located outside the test box.

6. A composite grouting material waterproofing and leak-proofing test system as claimed in claim 1, characterized in that: The inner wall of the test box is provided with scales, through which the size of the gap between the fixed vertical plate and the movable vertical plate can be determined.

7. A composite grouting material waterproofing and plugging test system as claimed in claim 1, characterized in that: Grouting holes are arranged on the fixed vertical plate, and a water inlet and a water outlet are arranged on the test box; the grouting holes, the water inlet and the water outlet are all connected with the gap between the fixed vertical plate and the movable vertical plate.

8. A composite grouting material waterproofing and leak-proofing test system as claimed in claim 7, characterized in that: The water inlet is connected to the water tank, the water tank is connected to the lifting platform, and the lifting platform can drive the water tank to rise or fall.

9. A composite grouting material waterproofing and leak-proofing test system as claimed in claim 8, characterized in that: A vertical ruler is also included, which is used to measure the water level in the tank.

10. A test method for waterproofing and plugging of composite grouting materials, characterized in that: include: Move the movable vertical plate so that the gap between the movable vertical plate and the fixed vertical plate meets the test requirements; Turn the patterned plate belt so that the pattern surface required by the test faces the gap; By injecting water and slurry into the gap between the movable vertical plate and the fixed vertical plate, a waterproof and leak-proofing test is carried out on the slurry.

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