CN213181498U - Be used for prosthetic visualization device of rock sample slip casting that breaks - Google Patents
Be used for prosthetic visualization device of rock sample slip casting that breaks Download PDFInfo
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- CN213181498U CN213181498U CN202022291146.XU CN202022291146U CN213181498U CN 213181498 U CN213181498 U CN 213181498U CN 202022291146 U CN202022291146 U CN 202022291146U CN 213181498 U CN213181498 U CN 213181498U
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Abstract
The utility model discloses a visualization device for grouting repair of a fractured rock sample, which comprises a grouting cylinder with a top cover and a bottom cover and a pressurizing device for providing pressurizing power for grouting; the grouting cylinder is made of transparent materials, a layer of partition plate is arranged at the middle upper part in the grouting cylinder, and a containing cavity for containing repair slurry is formed between the partition plate and the top cover; the pressurizing device is communicated with the accommodating cavity; two diversion trenches are arranged on the inner wall of the grouting cylinder, one end of one of the two diversion trenches is communicated with the accommodating cavity, and the other end of the diversion trench is positioned at the middle lower part of the grouting cylinder; one end of the other diversion trench is positioned at the middle lower part of the grouting cylinder, and the other end of the other diversion trench is connected with the end face of the bottom cover; and a rubber film for fixing the rock sample is arranged in the grouting cylinder. The device has the following advantages: effective exhaust, adjustable grouting pressure, convenient disassembly and assembly, controllable grouting pressure, adjustable fracture width and visualization.
Description
Technical Field
The utility model relates to a rock mechanics test field technical field especially relates to a be used for the prosthetic visual device of rock sample slip casting that breaks.
Background
In the process of construction or service of the underground engineering surrounding rock, due to factors in the aspects of the strength of the rock, geological environment and the like, the surrounding rock is inevitably damaged and broken to different degrees, so that the problems of water inrush of the underground engineering, instability of the surrounding rock and the like are caused, and the loss to different degrees is brought to the production and life of people. In the existing engineering, the broken surrounding rock is usually repaired by adopting a grouting method, but the evaluation and research on the repair performance of the broken rock are few, and particularly, a corresponding test device is lacked, so that people cannot understand the repair process of the broken rock deeply.
Disclosure of Invention
To the above-mentioned problem among the prior art, the utility model provides a pair of a be used for the prosthetic visualization device of rock sample slip casting that breaks has solved lack among the prior art evaluation research and has broken the prosthetic test device of rock sample and lead to can't deep understanding the problem of rock sample repair process.
In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows:
the visualization device for grouting repair of the fractured rock sample comprises a grouting cylinder with a top cover and a bottom cover and a pressurizing device for providing pressurizing power for grouting;
the grouting cylinder is made of transparent materials, a layer of partition plate is arranged at the middle upper part in the grouting cylinder, and a containing cavity for containing repair slurry is formed between the partition plate and the top cover; the pressurizing device is communicated with the accommodating cavity;
two diversion trenches are arranged on the inner wall of the grouting cylinder, one end of one of the two diversion trenches is communicated with the accommodating cavity, and the other end of the diversion trench is positioned at the middle lower part of the grouting cylinder; one end of the other diversion trench is positioned at the middle lower part of the grouting cylinder, and the other end of the other diversion trench is connected with the end face of the bottom cover; and a rubber film for fixing the rock sample is arranged in the grouting cylinder.
In the process of carrying out grouting repair test on the fractured rock sample, wrapping the fractured rock sample by using a rubber film, cutting a gap on the rubber film by using a knife, placing the rock sample wrapped by the rubber film into a grouting cylinder, enabling the rubber film to be in close contact with the inner wall of the grouting cylinder, and starting a pressurizing device to carry out grouting repair on the rock sample, wherein the experimental object is a cylindrical rock sample; and the repairing slurry flows into the rock sample crack from one of the two diversion trenches to repair the crack, flows out from the other diversion trench after the repairing slurry is filled in the rock sample crack, and completes the grouting repair test after the repairing slurry is solidified. A tester can visually know the whole grouting repairing process through the transparent grouting cylinder; the arrangement of the two diversion trenches ensures that the slurry inlet channel and the slurry outlet channel are unique, the grouting effect is ensured, and the grouting repair test is smoothly carried out.
Further, the pressurizing device comprises a liquid nitrogen bottle and a liquid conveying pipe, and a liquid outlet of the liquid nitrogen bottle is provided with a pressure reducing valve and a pressure gauge; one end of the infusion tube is communicated with the liquid nitrogen bottle through a connecting pressure reducing valve, and the other end of the infusion tube penetrates through the top cover to be communicated with the containing cavity. Liquid nitrogen with the purity of 99.2 percent is arranged in the liquid nitrogen bottle, and the liquid nitrogen is insoluble in water, so that injected repair slurry is ensured not to be polluted, and the nitrogen is safe, reliable, low in cost and economical; the pressure reducing valve can adjust the liquid nitrogen injection pressure, provide power of different sizes and facilitate the infiltration of repair slurry under different pressures.
Further, as a specific arrangement mode of the two guide grooves, the cross sections of the two guide grooves are semicircular, and the horizontal distance between the two guide grooves is the inner diameter of the grouting cylinder.
Furthermore, the outer wall of the grouting cylinder is provided with a fixing bolt for fixing a rock sample in the grouting cylinder. When grouting repair test is carried out on the fracture widths of different rock samples, the fractured upper rock section can be lifted manually, the fracture width is increased, then the fixing bolt is tightened, the fixing bolt penetrates through the outer wall of the grouting cylinder to be in close contact with a rubber film on the outer wall of the fractured upper rock section, the fracture width of the fractured rock sample is adjusted, the fixing position is fixed, and the fracture width can be controlled.
Further, a slurry collecting container is arranged below the grouting cylinder; the inner surface of the bottom cover is provided with a plurality of salient points, and the bottom cover is provided with a flow guide port and a flow guide pipe with one end connected with the flow guide port; the other end of the flow guide pipe is connected with the slurry collecting container, and a flow guide valve is arranged on the flow guide pipe. The raised points serve as support points for the rock sample so as to provide fluid drainage channels.
Furthermore, in order to take out a rock sample in the grouting cylinder conveniently, the grouting cylinder is formed by connecting two semi-cylindrical shells, a step-shaped connecting part is arranged at the joint of the two shells, and a plurality of throat hoops are uniformly arranged on the outer wall of the grouting cylinder at intervals. The hose clamp and the connecting part are arranged, so that the sealing is better, the structure is stable, and the leakage of the repair slurry is avoided.
Preferably, the inner diameter of the grouting cylinder is 53mm, the height of the grouting cylinder is 160mm, and the thickness of the wall of the grouting cylinder is 10 mm.
Furthermore, in order to measure the fracture width of the rock sample conveniently, vertical scales are arranged on the outer wall of the grouting cylinder.
Furthermore, in order to enable the whole device to form a skid-mounted structure and facilitate the carrying of the whole device, the visualization device further comprises a fixing frame, and the grouting cylinder, the liquid nitrogen bottle and the slurry collecting container are all fixed on the fixing frame.
The utility model has the advantages that: in the utility model, the transparent arrangement of the grouting cylinder facilitates the testing personnel to visually know the repairing process of the broken rock sample; the grouting cylinder is formed by connecting two semicircular shells, so that the leakage of repair grout is avoided, and a rock sample in the grouting cylinder is convenient to take out; the setting of pressure device, the injection pressure of convenient control restoration thick liquid, the setting of guiding gutter ensures that the thick liquid advances, goes out the passageway only, guarantees the slip casting effect, makes slip casting restoration experiment go on smoothly.
Drawings
Fig. 1 is a schematic structural diagram of a visualization device for grouting repair of a fractured rock sample.
Fig. 2 is a schematic sectional view of a grouting cylinder.
Fig. 3 is a structural schematic diagram of a bottom cover of a grouting cylinder.
Wherein, 1, grouting a cylinder; 2. a top cover; 3. a bottom cover; 4. a pressurizing device; 401. a liquid nitrogen bottle; 402. a transfusion tube; 403. a pressure reducing valve; 404. a pressure gauge; 5. a partition plate; 6. an accommodating chamber; 7. a diversion trench; 8. a rubber film; 9. fixing the bolt; 10. a slurry collection vessel; 11. a flow guide port; 12. a flow guide pipe; 13. a flow guide valve; 14. a housing; 15. a connecting portion; 16. a hose clamp; 17. vertically scaling; 18. a fixed mount; 19. and (4) bumps.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in fig. 1 to 3, the utility model provides a visual device for grouting restoration of a fractured rock sample, which comprises a grouting cylinder 1 with a top cover 2 and a bottom cover 3 and a pressurizing device 4 for providing pressurizing power for grouting; the grouting cylinder 1 is formed by connecting two semi-cylindrical shells 14, so that a tester can take out a rock sample in the grouting cylinder 1 conveniently, the two shells 14 are made of transparent materials and can be made of organic glass, the connecting part of the two shells 14 is provided with a step-shaped connecting part 15, and the outer wall of the grouting cylinder 1 is uniformly provided with a plurality of throat hoops 16 at intervals. The arrangement of the hose clamp 16 and the connecting part 15 has the advantages of good sealing and stable structure, and avoids leakage of repair slurry.
The tested rock sample is a cylinder with the diameter of 50mm, the inner diameter of the grouting cylinder 1 is 53mm, the height of the grouting cylinder 1 is 160mm, and the thickness of the cylinder wall of the grouting cylinder 1 is 10 mm. A rubber membrane 8 for fixing a rock sample is arranged in the grouting cylinder 1, and the thickness of the rubber membrane 8 is 1.5 mm; the rubber membrane 8 wraps the rock sample to be tested and fixes the rock sample to be tested in the grouting cylinder 1.
As shown in fig. 1, the outer wall of the grouting cylinder 1 is provided with a fixing bolt 9 for fixing a rock sample in the grouting cylinder 1. When different rock samples fracture width are required to be subjected to grouting repair test, the fractured upper rock section can be lifted manually, so that the fracture width is increased, then the fixing bolt 9 is tightened, the fixing bolt 9 penetrates through the outer wall of the grouting cylinder 1 to be in close contact with the rubber film 8 on the outer wall of the fractured upper rock section, the fracture width of the fractured rock samples is adjusted, the fixing position is fixed, and the fracture width can be controlled.
Vertical scales 17 are arranged on the outer wall of the grouting cylinder 1, and the fracture width of a rock sample can be conveniently measured.
A layer of partition plate 5 is arranged at the middle upper part in the grouting cylinder 1, and a containing cavity 6 for containing repair slurry is formed between the partition plate 5 and the top cover 2;
the pressurizing device 4 is communicated with the accommodating cavity 6; the pressurizing device 4 comprises a liquid nitrogen bottle 401 and an infusion tube 402, and a pressure reducing valve 403 and a pressure gauge 404 are arranged at a liquid outlet of the liquid nitrogen bottle 401; one end of the infusion tube 402 is communicated with the liquid nitrogen bottle 401 through a connecting pressure reducing valve 403, and the other end of the infusion tube passes through the top cover 2 and is communicated with the containing cavity 6. Liquid nitrogen with the purity of 99.2 percent is arranged in the liquid nitrogen bottle 401, and the liquid nitrogen is insoluble in water, so that injected repair slurry is not polluted, and the nitrogen is safe, reliable, low in cost and economical; the pressure reducing valve 403 can adjust the injection pressure of liquid nitrogen, provide power of different sizes, and facilitate infiltration of repair slurry under different pressures.
Two guide grooves 7 are formed in the inner wall of the grouting cylinder 1, one end of one of the two guide grooves 7 is communicated with the accommodating cavity 6, and the other end of the guide groove 7 is located at the middle lower part of the grouting cylinder 1; one end of the other diversion trench 7 is positioned at the middle lower part of the grouting cylinder 1, and the other end is connected with the end face of the bottom cover 3; the cross section of the two guide grooves 7 can be semicircular, and the horizontal distance between the two guide grooves 7 is the inner diameter of the grouting cylinder 1. The arrangement of the diversion trench 7 ensures that the slurry inlet channel and the slurry outlet channel are unique, the grouting effect is ensured, and the grouting repair test is smoothly carried out.
As shown in fig. 3, a slurry collecting container 10 is arranged below the grouting cylinder 1; the inner surface of the bottom cover 3 is provided with a plurality of convex points 19, the number of the convex points 19 can be three, the convex points 19 can be hemispheres with the bottom surface diameter of 6mm and the height of 4mm, and the convex points 19 are used as supporting points of a rock sample so as to provide a fluid discharge channel. The bottom cover 3 is provided with a flow guide port 11 and a flow guide pipe 12 with one end connected with the flow guide port 11; the other end of the draft tube 12 is connected with the slurry collecting container 10, and a draft valve 13 is arranged on the draft tube 12.
The visual device for grouting repair of the fractured rock sample further comprises a fixing frame 18, and the grouting cylinder 1, the liquid nitrogen bottle 401 and the slurry collecting container 10 are all fixed on the fixing frame 18, so that the whole device forms a skid-mounted structure, and the whole device is convenient to carry.
In the process of carrying out grouting repair test on the fractured rock sample, the experimental object is a cylindrical rock sample, firstly, the fractured rock sample is wrapped by using a rubber film 8, then, a gap is formed in the rubber film 8 by using a knife, the position of the gap corresponds to the position of the fractured part of the rock sample, the rock sample wrapped by the rubber film 8 is placed into a grouting cylinder 1, the rubber film 8 is in close contact with the inner wall of the grouting cylinder 1, and a pressurizing device 4 is started to carry out grouting repair on the rock sample; and the repairing slurry flows into the rock sample crack from one of the two diversion trenches 7, the rock sample crack is repaired, the repairing slurry flows out from the other diversion trench 7 after the rock sample crack is filled with the repairing slurry, and the grouting repairing test is completed after the repairing slurry is solidified. The whole grouting repair process can be visually known by a tester through the transparent grouting cylinder 1.
Claims (9)
1. A visualization device for grouting restoration of a fractured rock sample is characterized by comprising a grouting cylinder (1) with a top cover (2) and a bottom cover (3) and a pressurizing device (4) for providing pressurizing power for grouting;
the grouting cylinder (1) is made of transparent materials, a layer of partition plate (5) is arranged at the middle upper part in the grouting cylinder (1), and a containing cavity (6) for containing repair slurry is formed between the partition plate (5) and the top cover (2); the pressurizing device (4) is communicated with the accommodating cavity (6);
two diversion trenches (7) are arranged on the inner wall of the grouting cylinder (1), one end of one diversion trench (7) is communicated with the accommodating cavity (6), and the other end of the diversion trench is positioned at the middle lower part of the grouting cylinder (1); one end of the other diversion trench (7) is positioned at the middle lower part of the grouting cylinder (1), and the other end is connected with the end face of the bottom cover (3); a rubber membrane (8) for fixing a rock sample is arranged in the grouting cylinder (1).
2. The visualization device for grouting restoration of a fractured rock specimen according to claim 1, wherein the pressurizing device (4) comprises a liquid nitrogen bottle (401) and a liquid conveying pipe (402), and a liquid outlet of the liquid nitrogen bottle (401) is provided with a pressure reducing valve (403) and a pressure gauge (404); one end of the infusion tube (402) is communicated with the liquid nitrogen bottle (401) through the pressure reducing valve (403), and the other end of the infusion tube penetrates through the top cover (2) to be communicated with the containing cavity (6).
3. Visualization device for grouting restoration of a fractured rock specimen according to claim 2, characterized in that the cross section of the two guide grooves (7) is semicircular, and the horizontal distance between the two guide grooves (7) is the inner diameter of the grouting cylinder (1).
4. Visualization device for grouting restoration of a fractured rock specimen according to claim 2, characterized in that the outer wall of the grouting cylinder (1) is provided with a fixing bolt (9) for fixing the rock specimen in the grouting cylinder (1).
5. Visualization device for grouting restoration of a fractured rock specimen according to claim 2, characterized in that a grout collecting container (10) is arranged below the grouting cylinder (1); a plurality of salient points (19) are arranged on the inner surface of the bottom cover (3), a flow guide opening (11) and a flow guide pipe (12) with one end connected with the flow guide opening (11) are arranged on the bottom cover (3); the other end of the draft tube (12) is connected with the slurry collecting container (10), and a draft valve (13) is arranged on the draft tube (12).
6. The visualization device for grouting restoration of the fractured rock sample according to any one of claims 1 to 5, wherein the grouting cylinder (1) is formed by connecting two semi-cylindrical shells (14), a step-shaped connecting part (15) is arranged at the joint of the two shells (14), and a plurality of throat hoops (16) with uniform intervals are arranged on the outer wall of the grouting cylinder (1).
7. Visualization device for grouting restoration of a fractured rock specimen according to claim 6, wherein the inner diameter of the grouting cylinder (1) is 53mm, the height of the grouting cylinder (1) is 160mm, and the thickness of the wall of the grouting cylinder (1) is 10 mm.
8. Visualization device for grouting restoration of a fractured rock specimen according to claim 6, characterized in that the outer wall of the grouting cylinder (1) is provided with vertical scales (17).
9. Visualization device for grouting restoration of a fractured rock specimen according to claim 6, further comprising a fixing frame (18), wherein the grouting cylinder (1), the liquid nitrogen bottle (401) and the grout collecting container (10) are all fixed on the fixing frame (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022291146.XU CN213181498U (en) | 2020-10-15 | 2020-10-15 | Be used for prosthetic visualization device of rock sample slip casting that breaks |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022291146.XU CN213181498U (en) | 2020-10-15 | 2020-10-15 | Be used for prosthetic visualization device of rock sample slip casting that breaks |
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| CN213181498U true CN213181498U (en) | 2021-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022291146.XU Active CN213181498U (en) | 2020-10-15 | 2020-10-15 | Be used for prosthetic visualization device of rock sample slip casting that breaks |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114808989A (en) * | 2022-05-07 | 2022-07-29 | 南昌大学 | Rock structure surface pressure grouting equipment capable of adjusting filling thickness |
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2020
- 2020-10-15 CN CN202022291146.XU patent/CN213181498U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114808989A (en) * | 2022-05-07 | 2022-07-29 | 南昌大学 | Rock structure surface pressure grouting equipment capable of adjusting filling thickness |
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