CN215728146U - Test device for microorganism pressurization grouting solidification loess - Google Patents
Test device for microorganism pressurization grouting solidification loess Download PDFInfo
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- CN215728146U CN215728146U CN202122220142.7U CN202122220142U CN215728146U CN 215728146 U CN215728146 U CN 215728146U CN 202122220142 U CN202122220142 U CN 202122220142U CN 215728146 U CN215728146 U CN 215728146U
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Abstract
A kind of little biological pressurization slip casting solidifies the experimental apparatus of the loess, including the soil sample container, the upper end of the soil sample container links with exit end of the grouting machine and air compressor machine separately through the conduit, the entrance point of the grouting machine communicates to the liquid supply bottle through the conduit, there are valves on the conduit between liquid supply bottle and grouting machine, between grouting machine and soil sample container and between air compressor machine and soil sample container; during testing, the liquid supply bottle is connected with an inlet of the grouting machine through a conduit and a valve, the cover plate is fixedly arranged at the top of the soil sample container, and outlets of the grouting machine and the air compressor are connected in parallel to a small hole in the middle of the cover plate through the conduit and the valve; the utility model solves the problem of difficult infiltration of the bacterial liquid cementing liquid in the soil body by using a pressurizing grouting mode, has simple structure and easy operation, has obvious effect of solidifying loess by microbial pressurizing grouting, and provides a new idea for curing the MICP technology.
Description
Technical Field
The utility model belongs to a test device, and particularly relates to a test device for microorganism pressurization, grouting and loess solidification.
Background
The collapsible loess is repeatedly reinforced by the MICP technology, and the aim of reducing or eliminating the collapsible property of the loess is fulfilled. In the MICP reinforcing process, calcium carbonate generated by the induction of the bacillus basalis can fill the overhead pores of the collapsible loess, and plays a supporting role in the collapsible of the collapsible loess which is soaked in water and compressed. However, as the reinforcement times increase, the pores in the collapsible loess are gradually filled and blocked by calcium carbonate, and the infiltration of the bacterial liquid cementing liquid becomes more and more difficult, which has adverse effect on the effective reinforcement depth of the soil sample.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide the test device for the microorganism pressurized grouting solidification loess, which solves the problem that microorganism grouting solidification cannot go deep by arranging the pressurizing device, can realize the switching between a single-liquid grouting method and a double-liquid grouting method in the microorganism grouting process, has the advantages of simple structure, good air tightness and easy operation, has obvious microorganism pressurized grouting loess effect, and also provides sample preparation conditions and convenience for the subsequent triaxial shear test.
In order to achieve the above purpose, the utility model provides the following technical scheme:
the utility model provides a test device of little pressurization slip casting solidification loess, includes soil sample container 1, 1 upper ends of soil sample container are connected with the exit end of slip casting machine 2 and air compressor machine 3 respectively through the pipe, and the entrance point of slip casting machine 2 communicates through the pipe to in the liquid supply bottle 5, all is equipped with valve 4 on the pipe between liquid supply bottle 5 and the slip casting machine 2, between slip casting machine 2 and the soil sample container 1 and between air compressor machine 3 and the soil sample container 1.
The top of the soil sample container 1 is provided with a detachable cover plate 1-1, and the middle of the cover plate 1-1 is provided with a small hole 1-2 matched with the guide pipe.
And sealing gaskets are arranged at the joint of the top of the soil sample container 1 and the cover plate 1-1 and the joint of the small hole 1-2 and the guide pipe.
The soil sample container 1 is made of transparent organic glass.
The number of the liquid supply bottles 5 and the number of the conduits are increased or decreased according to the test requirements.
The body of the liquid supply bottle 5 is provided with scales.
The utility model has the beneficial effects that:
the problem that microorganism grouting solidification cannot go deep is solved through pressurization grouting of the air compressor 3 and the grouting machine 2; the arrangement of the liquid supply bottle 5 and the catheter is increased or decreased according to the test requirements, so that the switching between a single-liquid grouting method and a double-liquid grouting method in the microorganism grouting process is met; observing the loess grouting pressurization condition at any time through the soil sample container 1 made of transparent materials; the utility model has simple structure, good air tightness, easy acquisition of test materials, easy operation and obvious effect of microorganism pressurization grouting loess, and provides a new idea for curing loess by the MICP technology.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a soil sample container; 1-1, a cover plate; 1-2, small holes; 2. grouting machine; 3. an air compressor; 4. a valve; 5. a liquid supply bottle.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
referring to fig. 1, a test device for microorganism pressurization slip casting solidification loess, includes soil sample container 1, soil sample container 1 upper end is connected with the exit end of slip casting machine 2 and air compressor machine 3 respectively through the pipe, and the entrance point of slip casting machine 2 communicates to in the liquid supply bottle 5 through the pipe, all is equipped with valve 4 on the pipe between liquid supply bottle 5 and slip casting machine 2, between slip casting machine 2 and soil sample container 1 and between air compressor machine 3 and soil sample container 1.
The top of the soil sample container 1 is provided with a detachable cover plate 1-1, and the middle of the cover plate 1-1 is provided with a small hole 1-2 matched with the guide pipe.
And sealing gaskets are arranged at the joint of the top of the soil sample container 1 and the cover plate 1-1 and the joint of the small hole 1-2 and the guide pipe.
The soil sample container 1 is made of transparent organic glass.
The number of the liquid supply bottles 5 and the number of the conduits are increased or decreased according to the test requirements.
The body of the liquid supply bottle 5 is provided with scales.
The height of the soil sample container 1 is higher than that of the soil sample.
The working principle of the utility model is as follows:
during the test, the grouting machine 2, the air compressor 3 and the liquid supply bottle 5 are respectively placed on a workbench, then the liquid supply bottle 5 is connected with the inlet end of the grouting machine 6 through a conduit and a valve 4, the cover plate 1-1 is fixedly installed at the top of the soil sample container 1, the outlet ends of the grouting machine 2 and the air compressor 3 are connected in parallel to the small hole 1-2 in the middle of the cover plate 1-1 through the conduit and the valve 4, the soil sample is placed in the soil sample container 1, and the test of solidifying loess by pressurizing and grouting the microorganism is carried out on the soil sample in the soil sample container 1 by controlling different valves 4.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that modifications and adaptations can be made without departing from the principles of the utility model and these are intended to be within the scope of the utility model.
Claims (6)
1. The utility model provides a test device of microorganism pressurization slip casting solidification loess, includes soil sample container (1), its characterized in that: the upper end of the soil sample container (1) is respectively connected with the outlet ends of the grouting machine (2) and the air compressor (3) through conduits, the inlet end of the grouting machine (2) is communicated into the liquid supply bottle (5) through conduits, and valves (4) are respectively arranged on the conduits between the liquid supply bottle (5) and the grouting machine (2), between the grouting machine (2) and the soil sample container (1) and between the air compressor (3) and the soil sample container (1).
2. The apparatus for testing microorganism pressure grouting solidified loess according to claim 1, wherein: the top of the soil sample container (1) is provided with a detachable cover plate (1-1), and the middle of the cover plate (1-1) is provided with a small hole (1-2) matched with the guide pipe.
3. The apparatus for testing microorganism pressure grouting solidified loess according to claim 2, wherein: and sealing gaskets are arranged at the joint of the top of the soil sample container (1) and the cover plate (1-1) and the joint of the small hole (1-2) and the guide pipe.
4. The apparatus for testing microorganism pressure grouting solidified loess according to claim 1, wherein: the soil sample container (1) is made of transparent organic glass.
5. The apparatus for testing microorganism pressure grouting solidified loess according to claim 1, wherein: the number of the liquid supply bottles (5) and the number of the conduits are increased or decreased according to the test requirements.
6. The apparatus for testing microorganism pressure grouting solidified loess according to claim 1, wherein: the body of the liquid supply bottle (5) is provided with scales.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122220142.7U CN215728146U (en) | 2021-09-14 | 2021-09-14 | Test device for microorganism pressurization grouting solidification loess |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122220142.7U CN215728146U (en) | 2021-09-14 | 2021-09-14 | Test device for microorganism pressurization grouting solidification loess |
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| CN215728146U true CN215728146U (en) | 2022-02-01 |
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| CN202122220142.7U Active CN215728146U (en) | 2021-09-14 | 2021-09-14 | Test device for microorganism pressurization grouting solidification loess |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115450198A (en) * | 2022-10-31 | 2022-12-09 | 西安建筑科技大学 | Device for solidifying loess foundation through microorganism pressurized grouting and method for solidifying loess foundation |
| CN117965292A (en) * | 2024-04-02 | 2024-05-03 | 广州大学 | Soil pressurizing grouting experimental device and experimental method thereof |
-
2021
- 2021-09-14 CN CN202122220142.7U patent/CN215728146U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115450198A (en) * | 2022-10-31 | 2022-12-09 | 西安建筑科技大学 | Device for solidifying loess foundation through microorganism pressurized grouting and method for solidifying loess foundation |
| CN115450198B (en) * | 2022-10-31 | 2024-05-14 | 西安建筑科技大学 | Device for solidifying loess foundation through microorganism pressurization grouting and method for solidifying loess foundation |
| CN117965292A (en) * | 2024-04-02 | 2024-05-03 | 广州大学 | Soil pressurizing grouting experimental device and experimental method thereof |
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