An indoor test device for verifying the water blocking performance of water blocking materials

Abstract

The invention discloses an indoor test device for verifying the water-plugging performance of water-plugging materials, comprising a water injection cavity wall, a water injection front plate, a bottom plate, a covering plate, a sealing bolt and a crack box; the water injection port of the water injection cavity wall is connected to its internal space; the water injection front plate is sealed and connected to one end of the water injection cavity wall; a perforation and an annular groove are provided on the bottom plate, the annular groove is arranged around the outer side of the perforation and is provided with a waterproof ring, the waterproof ring is clamped between the annular groove and the other end of the water injection cavity wall; the covering plate covers the perforation, and the covering plate and the bottom plate are detachably connected; the sealing bolt is used to adjust the tightness between the water injection cavity wall and the bottom plate; a plurality of gap grooves are provided on the inner wall of the crack box, one end of the crack box is sealed and connected to the perforation, and the other end is provided with a detachable box cover, and the box cover is provided with a grouting hole and an air outlet hole; the experiment of this scheme is simple and clear, thereby effectively solving the problem that the prior art cannot intuitively know the water-plugging effect of the water-plugging material.

Description

Technical Field

[0001] The invention relates to the technical field of water blocking material testing, and in particular to an indoor test device for verifying the water blocking performance of water blocking materials. Background Art

[0002] Grouting repair is one of the important means of treating underground space structural disasters. The principle is clear and straightforward: by injecting water-blocking materials into defective areas and utilizing the solidification of the materials, cracks or pores are quickly filled and the surrounding medium is compacted and bonded, achieving the purpose of reinforcing the surrounding rock, filling voids, and preventing leakage. At the same time, changes in the proportion of the same material can achieve plugging under different water pressures. Because destructive tests cannot be performed in actual plugging and repair projects, it is impossible to observe at what extreme water pressure the material plugging failure occurs. Therefore, material mechanics experiments such as uniaxial compression and impermeability tests are generally used to obtain the compressive strength and impermeability of the water-blocking material after solidification, and the water-blocking performance of the material is explained in combination with actual engineering application experience.

[0003] In summary, the existing technology cannot intuitively know the water blocking effect of the water blocking material, and therefore a technical solution that can solve this problem is urgently needed. Summary of the Invention

[0004] The purpose of the present invention is to provide an indoor test device for verifying the water-blocking performance of a water-blocking material, so as to solve the problem in the prior art that the water-blocking effect of the water-blocking material cannot be intuitively known.

[0005] In order to solve the above technical problems, the present invention provides an indoor test device for verifying the water-blocking performance of water-blocking materials, comprising a water injection chamber wall, a water injection front plate, a bottom plate, a cover plate, a sealing bolt and a crack box; the water injection chamber wall is enclosed in a tubular shape, and a water injection port is provided on the water injection chamber wall, and the water injection port is connected to the internal space enclosed by the water injection chamber wall; the water injection front plate is sealed and connected to a port of the water injection chamber wall; a perforation and an annular groove are provided on the bottom plate, the perforation passes through the bottom plate, the annular groove is arranged around the circumference of the perforation, a waterproof ring is provided in the annular groove, and the waterproof ring Clamped between the annular groove and the other port of the water injection chamber wall; the cover plate covers the perforation, and the cover plate and the bottom plate are detachably connected; the sealing bolt passes through the water injection pre-plate and the bottom plate, and the sealing bolt is used to adjust the tightness between the water injection chamber wall and the bottom plate; the inner wall of the crack box is provided with a plurality of gap grooves, one port of the crack box is sealedly connected to the perforation, and the other port of the crack box is provided with a detachable box cover, and the box cover is provided with a grouting hole and an air outlet, and the grouting hole and the air outlet are connected to the internal space surrounded by the crack box.

[0006] In one embodiment, the base plate is provided with a plurality of positioning threaded holes that do not penetrate the base plate, the plurality of positioning threaded holes are arranged around the circumference of the through hole, and the plurality of positioning threaded holes are all provided in the area surrounded by the annular groove; the indoor test device also includes a plurality of positioning bolts, and the plurality of positioning bolts pass through the cover plate and are respectively threadedly connected to the plurality of positioning threaded holes.

[0007] In one embodiment, the through-hole is a square hole, the covering plate is a circular plate, and the through-hole is completely located within the covering range of the covering plate.

[0008] In one embodiment, the gap grooves are arranged in a ring shape around the inner wall of the slit box, and a plurality of the gap grooves are arranged along the axial direction of the slit box.

[0009] In one embodiment, the inner wall of the crack box is provided with a plurality of angle steels, and the plurality of angle steels are discretely arranged.

[0010] In one embodiment, the sealing bolt is threadedly connected to the water injection pre-plate and the bottom plate, and the end of the sealing bolt is opposite to the surface of the water injection pre-plate facing away from the bottom plate.

[0011] In one embodiment, there are multiple annular grooves, and the multiple annular grooves are coaxially arranged, and the waterproof ring is provided in the multiple annular grooves.

[0012] The beneficial effects of the present invention are as follows:

[0013] During application, the interior of the crack box is used to load mortar to form a model with cracks, and the box cover is provided with grouting holes and air vents, so the grouting holes can be used to focus the sealing material on the model to complete the preparation of the experimental model; at this time, since the cover plate and the bottom plate are detachably connected, the water injection port is connected to the internal space surrounded by the water injection cavity wall, so water can be injected through the water injection port to complete the test of the water blocking effect of the water blocking material. The experimental process is simple and the experimental results are simple and clear, which effectively solves the problem that the existing technology cannot intuitively know the water blocking effect of the water blocking material. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a structural diagram provided by an embodiment of the present invention;

[0016] Figure 2 yes Figure 1 Schematic diagram of the internal structure of the water injection cavity wall;

[0017] Figure 3 yes Figure 1 Schematic diagram of the bottom plate structure;

[0018] Figure 4 yes Figure 3 Schematic diagram of the structure with the cover plate installed;

[0019] Figure 5 yes Figure 1 Schematic diagram of the crack box structure;

[0020] Figure 6 yes Figure 5 Schematic diagram of the rear view structure;

[0021] Figure 7 yes Figure 1 Application state diagram when loading mortar;

[0022] Figure 8 yes Figure 7 Diagram of the application state after the mortar is solidified;

[0023] Figure 9 yes Figure 8 Application status diagram after installing the cover.

[0024] The reference numerals are as follows:

[0025] 10. Water injection cavity wall; 11. Water injection port;

[0026] 20. Water injection front plate;

[0027] 30. Bottom plate; 31. Perforation; 32. Annular groove; 33. Positioning threaded hole;

[0028] 40. Cover plate; 41. Positioning bolt;

[0029] 50. Sealing bolt;

[0030] 60. Slit box; 61. Gap slot; 62. Box cover; 63. Grouting hole; 64. Air vent; 65. Angle steel;

[0031] 70. Foam block; 71. Designated crack; 72. Mortar. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0033] The present invention provides an indoor test device for verifying the water blocking performance of water blocking materials, which can be used for example Figures 1 to 6 As shown, it includes a water injection cavity wall 10, a water injection front plate 20, a bottom plate 30, a cover plate 40, a sealing bolt 50 and a crack box 60; the water injection cavity wall 10 is enclosed in a tubular shape, and a water injection port 11 is provided on the water injection cavity wall 10, and the water injection port 11 is communicated with the internal space enclosed by the water injection cavity wall 10; the water injection front plate 20 is sealed and connected to one end of the water injection cavity wall 10; a through hole 31 and an annular groove 32 are provided on the bottom plate 30, the through hole 31 passes through the bottom plate 30, and the annular groove 32 is arranged around the circumference of the through hole 31, and a waterproof ring (not shown) is provided in the annular groove 32, which is clamped between the annular groove 32 and the water injection cavity wall 10. Between the other port of the cavity wall 10; the cover plate 40 covers the perforation 31, and the cover plate 40 and the bottom plate 30 are detachably connected; the sealing bolt 50 passes through the water injection pre-plate 20 and the bottom plate 30, and the sealing bolt 50 is used to adjust the tightness between the water injection cavity wall 10 and the bottom plate 30; the inner wall of the crack box 60 is provided with a plurality of gap grooves 61, and one port of the crack box 60 is sealedly connected to the perforation 31, and the other port of the crack box 60 is provided with a detachable box cover 62, and the box cover 62 is provided with a grouting hole 63 and an air outlet 64, and the grouting hole 63 and the air outlet 64 are connected to the internal space surrounded by the crack box 60.

[0034] When using, first loosen the sealing bolt 50 to release the connection between the sealing bolt 50 and the bottom plate 30, then keep the cover plate 40 connected to the bottom plate 30, and remove the box cover 62 to place the bottom plate 30 and the crack box 60 in the same position. Figure 7 At this time, a foam block 70 can be placed in the central position of the crack box 60, and then the mortar 72 is poured from top to bottom. After the mortar 72 is firmly fixed, the foam block 70 is dissolved by ethyl acetate to obtain a specified crack 71. This state is as shown. Figure 8 As shown; then as Figure 9 As shown, the box cover 62 is reinstalled and the water blocking material is filled in through the grouting hole 63. The setting of the air outlet 64 will maintain the air pressure balance inside and outside the crack box 60, ensuring the adequacy of the water blocking material filling; finally, the cover plate 40 is removed and the water injection cavity wall 10, the water injection front plate 20 and the bottom plate 30 are reassembled as Figure 1 As shown, by injecting water into the water injection port 11, it can be known whether the water-blocking material can completely block the cracks. The experimental process is simple and the experimental results are simple and clear, which effectively solves the problem that the existing technology cannot intuitively know the water-blocking effect of the water-blocking material.

[0035] like Figure 3 and Figure 4As shown, the base plate 30 is provided with a plurality of positioning threaded holes 33 that do not penetrate the base plate 30, and the plurality of positioning threaded holes 33 are arranged around the circumference of the through hole 31, and the plurality of positioning threaded holes 33 are all arranged in the area surrounded by the annular groove 32; the indoor test device also includes a plurality of positioning bolts 41, and the plurality of positioning bolts 41 pass through the cover plate 40 and are respectively threadedly connected to the plurality of positioning threaded holes 33.

[0036] After adopting this setting method, the cover plate 40 can be installed and removed by loosening and tightening the positioning bolts 41, which is easy to operate. Moreover, since the positioning threaded holes 33 do not pass through the base plate 30, the installation of the cover plate 40 does not reduce the watertightness of the base plate 30.

[0037] like Figure 3 and Figure 4 As shown, the through hole 31 is a square hole, the covering plate 40 is a circular plate, and the through hole 31 is completely located within the covering range of the covering plate 40 .

[0038] With this arrangement, the cover plate 40 can completely cover the through-hole 31 and also cover the outer edge of the through-hole 31 , thereby better preventing mortar from overflowing from the edge where the through-hole 31 and the cover plate 40 meet.

[0039] like Figure 5 As shown, the gap grooves 61 are arranged in a ring shape around the inner wall of the slit box 60 , and a plurality of gap grooves 61 are arranged along the axial direction of the slit box 60 .

[0040] After setting the gap groove 61, the mortar can penetrate into the gap groove 61, which will make the mortar more firmly fixed in the crack box 60. After adopting the above-mentioned setting method, the coverage range of the gap groove 61 is maximized, thereby making the mortar more reliably fixed in the crack box 60.

[0041] like Figure 5 As shown, the inner wall of the crack box 60 is provided with a plurality of angle steels 65, and the plurality of angle steels 65 are discretely arranged.

[0042] After the angle steel 65 is added, the angle steel 65 can be embedded in the mortar, thereby further strengthening the fixation of the mortar; wherein, the discrete arrangement of the angle steel 65, that is, the angle steel 65 can be randomly arranged at various locations on the inner wall of the crack box 60, to ensure the stability of various locations after the mortar solidifies.

[0043] like Figure 1 As shown, the sealing bolt 50 is threadedly connected to the water injection pre-plate 20 and the bottom plate 30 , and the end of the sealing bolt 50 is opposite to the surface of the water injection pre-plate 20 facing away from the bottom plate 30 .

[0044] After adopting this setting, if the sealing bolt 50 is tightened, the end of the sealing bolt 50 will abut against the water injection pre-plate 20, thereby applying a pushing force, thereby making the connection between the water injection cavity wall 10 and the bottom plate 30 more secure.

[0045] like Figure 3 As shown, there are multiple annular grooves 32, and the multiple annular grooves 32 are coaxially arranged, and waterproof rings are provided in the multiple annular grooves 32.

[0046] After adopting this arrangement, the water tightness of the connection between the water injection cavity wall 10 and the bottom plate 30 can be further improved.

[0047] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An indoor test device for verifying the water blocking performance of water blocking materials, characterized in that: It includes a water injection cavity wall, a water injection front plate, a bottom plate, a cover plate, a sealing bolt and a crack box; The water injection cavity wall is formed into a tubular shape, and a water injection port is provided on the water injection cavity wall, and the water injection port is connected to the internal space surrounded by the water injection cavity wall; The water injection front plate is sealed and connected to a port of the water injection cavity wall; The bottom plate is provided with a perforation and an annular groove, the perforation passes through the bottom plate, the annular groove is arranged around the circumference of the perforation, a waterproof ring is provided in the annular groove, and the waterproof ring is clamped between the annular groove and another port of the water injection cavity wall; The cover plate covers the perforation, and the cover plate is detachably connected to the bottom plate; The sealing bolt passes through the water injection front plate and the bottom plate, and the sealing bolt is used to adjust the tightness between the water injection cavity wall and the bottom plate; The inner wall of the crack box is provided with a plurality of gap grooves, one end of the crack box is sealed and connected to the perforation, and the other end of the crack box is provided with a detachable box cover, the box cover is provided with a grouting hole and an air outlet, and the grouting hole and the air outlet are in conduction with the internal space surrounded by the crack box; The sealing bolt is threadedly connected to the water injection front plate and the bottom plate, and the end of the sealing bolt is opposite to the surface of the water injection front plate away from the bottom plate; There are a plurality of annular grooves, and the plurality of annular grooves are coaxially arranged, and the waterproof rings are arranged in the plurality of annular grooves.

2. The indoor test device according to claim 1, characterized in that: The bottom plate is provided with a plurality of positioning threaded holes which do not penetrate the bottom plate, the plurality of positioning threaded holes are arranged around the circumference of the through hole, and the plurality of positioning threaded holes are all arranged within the area surrounded by the annular groove; The indoor test device also includes a plurality of positioning bolts, and the plurality of positioning bolts pass through the cover plate and are respectively threadedly connected with the plurality of positioning threaded holes.

3. The indoor test device according to claim 2, characterized in that: The through hole is a square hole, the covering plate is a circular plate, and the through hole is completely placed within the covering range of the covering plate.

4. The indoor test device according to claim 1, characterized in that: The gap grooves are arranged in a ring shape around the inner wall of the slit box, and a plurality of the gap grooves are arranged along the axial direction of the slit box.

5. The indoor test device according to claim 4, characterized in that: The inner wall of the crack box is provided with a plurality of angle steels, and the plurality of angle steels are discretely arranged.

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