CN211478318U - Indoor simulation test testing arrangement of secondary lining replenishment slip casting - Google Patents
Indoor simulation test testing arrangement of secondary lining replenishment slip casting Download PDFInfo
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- CN211478318U CN211478318U CN201921639268.4U CN201921639268U CN211478318U CN 211478318 U CN211478318 U CN 211478318U CN 201921639268 U CN201921639268 U CN 201921639268U CN 211478318 U CN211478318 U CN 211478318U
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Abstract
The utility model relates to a tunnel lining slip casting construction test field, in particular to indoor analogue test testing arrangement field of secondary lining supplementary slip casting, include: a transparent chamber; the grouting channel is communicated with the water outlet of the transparent chamber; an exhaust channel connected with the transparent chamber; a screen assembly provided with an inlet, an outlet and a screen, the inlet of the screen assembly communicating with the chamber; a piston used for moving along the gravity direction is arranged in the transparent cavity, a cavity above the piston is used for simulating a cavity of a tunnel secondary lining, a slurry discharge port of the slurry injection channel is located in the cavity, an air inlet of the exhaust channel is located in the cavity, and the screen assembly is communicated with the cavity. The device is adopted to visually reflect the supplementary grouting effect of the tunnel secondary lining, can help researchers to research and improve the supplementary grouting method of the secondary lining under various working conditions, and plays a role in guiding the engineering practice.
Description
Technical Field
The utility model relates to a tunnel lining slip casting construction test field, in particular to indoor analogue test testing arrangement field of secondary lining supplementary slip casting.
Background
Tunnel construction occupies a larger and larger proportion in the field of civil traffic construction in China, and in 2018, planning construction of the Sichuan-Tibet railway is started in China comprehensively, and the tunnel occupation ratio in the Sichuan-Tibet railway is up to 70%. When the tunnel is built, a large cavity is left at the top of the lining by primary grouting, and the secondary lining needs to be supplemented and grouted at the moment. If the supplementary grouting can not achieve qualified filling effect on the secondary lining, the vault of the tunnel is not compact, and the phenomenon of 'two layers of skin' is caused. Because of the concealment and invisibility of the supplementary grouting, the difficulty in the tunnel grouting process is how to check the supplementary grouting effect of the tunnel and how to improve the secondary lining supplementary grouting technology of the tunnel.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an adopt simple and easy structure can simulate the secondary lining when tunnel secondary lining replenishes the slip casting and secondary lining replenishes the indoor analogue test testing arrangement of slip casting that replenishes of slip casting result under various operating mode conditions and the response condition, be applied to tunnel secondary lining and replenish the effect of slip casting and guide.
In order to realize above-mentioned purpose, the technical scheme that this application adopted is indoor analogue test testing arrangement of secondary lining supplementary slip casting, includes:
a transparent chamber;
the grouting channel is communicated with the water outlet of the transparent cavity and is used for injecting slurry into the cavity;
the exhaust channel is connected with the transparent chamber and is used for simulating the condition that the secondary lining of the tunnel is completely closed or not completely closed;
the screen assembly is provided with an inlet, an outlet and a screen, the inlet of the screen assembly is communicated with the chamber, and the screen assembly is used for simulating the bleeding condition when the tunnel lining has gaps with different sizes;
the transparent cavity is internally provided with a piston which is used for moving along the gravity direction, a cavity above the piston is used for simulating a cavity of a tunnel secondary lining, a slurry discharge port of the slurry injection channel is positioned in the cavity, an air inlet of the exhaust channel is positioned in the cavity, and the screen assembly is communicated with the cavity.
When the simulation grouting device is used, the simulation grouting conditions are set before indoor simulation grouting is carried out. And injecting grout to be injected into the cavity of the transparent chamber from the grouting channel, and adjusting the size of the cavity by adjusting the height of the piston to simulate the volume of the cavity of the secondary lining of the tunnel. And adjusting the height of a slurry discharge port of the slurry injection channel to simulate different slurry injection depths. And adjusting the closing state of the air outlet switch to simulate the condition that the tunnel secondary lining is completely closed or is not completely closed. The opening and closing of the switch of the water outlet 4 is adjusted to simulate the condition whether a tunnel secondary lining gap exists or not, and the adjustable piston is suitable for lining gaps corresponding to different heights. And (3) simulating different tunnel gap sizes by adopting the screen assembly. And after the adjustment is carried out, grouting is started, the designed grouting speed is controlled, and grouting is stopped when the target pressure is reached. At the moment, the filling degree and the grouting state of the grouting in the cavity can be directly observed, and the water yield of the outlet of the screen assembly is measured.
The utility model discloses a secondary lining supplementary slip casting result under various operating mode conditions and the corresponding condition when simple and easy test device simulation tunnel secondary lining supplementary slip casting, carry out the reflection directly perceived to tunnel secondary lining supplementary slip casting effect, help relevant engineering personnel to carry out preliminary understanding to secondary lining supplementary slip casting effect under the corresponding operating mode condition, simultaneously, can help the researcher to study and improve secondary lining supplementary slip casting method under all kinds of operating mode conditions, play the guide effect to the engineering reality.
Further, at least two water outlets 4 arranged along the gravity direction are arranged on the transparent chamber, and each water outlet 4 is communicated with the screen assembly.
Therefore, lining gaps corresponding to different heights can be simulated in a wider range.
Further, the screen assembly comprises a pipe body communicated with the water outlet of the chamber, and a screen connecting part used for placing the screen in the pipe body is arranged on the pipe body.
In the two lining supplementary slip casting constructions in actual tunnel, the condition is various, and wherein the infiltration gap is also diverse, so need frequent the transform of carrying on to the simulation condition in gap, so carry out the simulation in-process to two lining gaps in the tunnel, the change of the sieve plate in simulation gap needs a more convenient operation mode, so the utility model discloses a set up screen cloth connecting portion on the body.
Specifically, be provided with the mounting groove on the above-mentioned body, above-mentioned screen cloth connecting portion include with the screen cloth mount pad of mounting groove adaptation, this screen cloth mount pad is the arc structure that agrees with the body pipe wall, and the inboard of this screen cloth mount pad is provided with the draw-in groove that is used for installing the screen cloth. Realize like this the location of screen cloth, also ensure the screen cloth installation and can not take place the skew, through setting up foretell screen cloth mount pad, when needing to be changed the screen cloth, with the screen cloth install on the screen cloth mount pad can, then with the screen cloth mount pad embedding in the mounting groove, accomplish the change of screen cloth, very be adapted to the needs of two lining replenishment slip casting simulation experiments in tunnel to the crack simulation condition like this, more light, convenient change the screen cloth.
Preferably, the lock catch can be arranged on the pipe body and the screen mounting seat, when the screen mounting seat is completely embedded into the pipe body, the screen mounting seat is folded with the pipe body, and then is locked through the lock catch, and in order to provide sealing between the screen mounting seat and the pipe body, the sealing gasket can be sleeved at the edge position of the screen mounting seat.
Furthermore, one end of the screen mounting seat is hinged with one groove edge of the mounting groove; or, the screen mounting seat and the pipe body are of a split structure.
Further, the water outlet 4 is connected with a leakage branch pipe, the leakage branch pipes are connected to a leakage main pipe extending along the gravity direction, and the leakage main pipe is connected with an inlet of the screen assembly.
Further, the indoor simulation test testing device for secondary lining supplementary grouting further comprises a water containing groove with scales, and an opening in the upper portion of the water containing groove is used for corresponding to an outlet of the screen assembly, so that water leaking from the transparent chamber can be conveniently measured.
Furthermore, the exhaust channel and the grouting channel are movably arranged on the piston in a penetrating mode, so that the height of an air inlet of the exhaust channel and the height of an outlet of the grouting channel can be conveniently adjusted.
Preferably, sealing rings can be arranged between the exhaust channel, the grouting channel and the piston to realize better sealing.
Preferably, the inlet of the exhaust passage and the outlet of the grouting passage are provided with flanges with diameters larger than the diameters of the inlet and the outlet, so that the grouting passage or the exhaust passage is prevented from being separated from the cavity when the grouting passage or the exhaust passage is adjusted in a lifting mode.
Furthermore, a pressure detection device for detecting the air pressure of the cavity is arranged on the wall of the transparent cavity, so that an operator can conveniently observe the pressure detection device during grouting, and the safety and the reliability of the test are guaranteed. The pressure detection device can be a pressure gauge, a pressure detector and the like.
Further, the wall of the transparent chamber is provided with an air valve communicated with the cavity and used for releasing the pressure in the cavity after the test is finished.
The present invention will be further described with reference to the accompanying drawings and the detailed description. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description. Or may be learned by practice of the invention.
Drawings
The accompanying drawings, which form a part of the disclosure, are included to assist in understanding the disclosure, and the description provided herein and the accompanying drawings, which are related thereto, are intended to explain the disclosure, but do not constitute an undue limitation on the disclosure.
In the drawings:
FIG. 1 is a schematic view for explaining a secondary lining supplementary grouting indoor simulation test device of the present application;
FIG. 2 is a schematic view illustrating a screen assembly according to the first embodiment;
FIG. 3 is a radial schematic view of the tubular body of the screen assembly of the second embodiment;
FIG. 4 is a schematic axial view of the screen mounting base and tubular body of the screen assembly of the second embodiment when deployed;
FIG. 5 is a radial schematic view of the tubular body of the screen assembly illustrating a third embodiment of the present invention;
FIG. 6 is a schematic axial view of the screen mounting base and tubular body of the screen assembly of the third embodiment when deployed;
the labels in the figure are: the device comprises a transparent chamber 1, a pressure gauge 2, an air valve 3, a water outlet 4, a screen assembly 5, a pipe 510, a mounting groove 511, a screen mounting seat 512, a lock catch 513, a piston 6, a grouting channel 7, an exhaust channel 8, a solid adjusting rod 9, a water containing tank 10, a screen 11 and a sealing gasket 12.
Detailed Description
The present invention will be described more fully with reference to the accompanying drawings. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Before the present invention is described with reference to the accompanying drawings, it is to be noted that:
the technical solutions and features provided in the present invention in each part including the following description may be combined with each other without conflict.
Moreover, the embodiments of the invention described in the following description are generally only examples of a subset of the invention, and not all examples. Therefore, all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention shall fall within the protection scope of the present invention.
With respect to the terms and units of the present invention. The term "comprises" and any variations thereof in the description and claims of this invention and the related art are intended to cover non-exclusive inclusions.
As shown in fig. 1 and 2, in the first embodiment: the utility model provides a tunnel two lining supplementary slip casting indoor module test testing arrangement, includes transparent cavity 1, manometer 2, pneumatic valve 3, delivery port 4, screen assembly 5, piston 6, slip casting passageway 7, exhaust passage 8, solid regulating rod 9 and flourishing basin 10. A piston 6 moving along the gravity direction is arranged in the transparent chamber 1, a cavity above the piston 6 is used for simulating a cavity of a tunnel secondary lining, a slurry discharge port of the slurry injection channel 7 is positioned in the cavity, an air inlet of the exhaust channel 8 is positioned in the cavity, and the screen assembly 5 is communicated with the cavity.
The transparent chamber 1 of the water outlet 4 is provided with at least two water outlets which are arranged along the gravity direction, and each water outlet 4 is communicated with the screen assembly 5. The screen assembly 5 includes a tube 510 communicating with the water outlet 4 of the chamber, and the tube 510 is provided with a screen connecting portion for placing the screen 11 in the tube 510. The water outlet 4 is connected with a leakage branch pipe, the leakage branch pipes are all connected to a leakage main pipe extending along the gravity direction, and the leakage main pipe is connected with an inlet of the screen assembly 5. The tube 510 and the water outlet 4 of the transparent chamber 1 can be connected by flanges.
The upper opening of the water tank 10 is adapted to correspond to the outlet of the screen assembly 5. Above-mentioned exhaust passage 8 and slip casting passageway 7 are all mobilizable wear to locate on piston 6 to the height of the air inlet of exhaust passage 8 and the export of slip casting passageway 7 is adjusted to the convenience. Sealing rings can be arranged between the exhaust channel 8, the grouting channel 7 and the piston 6 to achieve better sealing. Flanges with the diameter larger than the diameter of the grouting channel 7 are arranged on the air inlet of the exhaust channel 8 and the outlet of the grouting channel 7, so that the grouting channel 7 or the exhaust channel 8 is prevented from being separated from the cavity when the grouting channel 7 or the exhaust channel 8 is lifted and lowered.
The transparent chamber 1 is a cylindrical compartment body with an opening at the lower end made of high-strength transparent glass, so that a grouting container is formed, and the fullness degree and grouting progress of grouting can be reflected in real time.
The pressure gauge 2 is arranged in the center of the top surface of the transparent chamber 1, is made of a common pressure tester and is used for measuring the pressure of the cavity in the device.
The air valve 3 is arranged on the top surface of the transparent chamber 1 and used for releasing pressure generated in the cavity after grouting is finished.
The water outlet sieve opening is arranged on the side surface of the transparent chamber 1 and formed by communicating a plurality of water outlets 4, and the terminal water outlet 4 is connected with the screen assembly 5 and used for simulating the bleeding condition when the tunnel lining has gaps with different sizes.
The screen assembly 5 includes a plurality of screens 11 of different mesh sizes to simulate tunnel lining apertures of different sizes.
The piston 6 is arranged in the transparent chamber 1, the partition plate is made of common durable materials, and the partition plate is penetrated by the grouting channel 7 and the exhaust channel 8 and is connected with a solid adjusting rod 9 for forming a closed cavity with the transparent chamber 1 and controlling the volume of the cavity.
The grouting passage 7 is connected to the piston 6, penetrates the piston 6, and is made of a stainless steel pipe for injecting grout.
The exhaust passage 8 is connected with the piston 6, penetrates through the piston 6, and is controlled by a switch to be in an open-close state, when the switch is opened, the exhaust passage is used for simulating the condition that the tunnel lining is not completely closed during grouting, and the vertical position of an air leakage gap in the secondary tunnel lining can be simulated.
The solid adjusting rod 9 is vertically fixed with the piston 6 and used for moving the position of the piston 6.
The water containing groove 10 is arranged at the end of the water outlet 4 and is used for containing water bleeding of the water outlet 4 and measuring the water bleeding volume.
Before the indoor simulated grouting is carried out, the simulated grouting conditions are set. The height of the piston 6 is adjusted through the solid adjusting rod 9, the size of the cavity is adjusted, and the volume of the cavity of the tunnel secondary lining is simulated. And adjusting the heights of the grouting channel 7 and the air outlet pipe 10 to simulate different grouting depths and air leakage heights. And adjusting the closing state of the air outlet switch to simulate the condition that the tunnel secondary lining is completely closed or is not completely closed. And the opening and closing of the water outlet 4 switch are adjusted to simulate the condition whether a tunnel secondary lining gap exists or not, and the water outlet 4 switches with different heights are opened and closed to adapt to lining gaps corresponding to the piston 6 at different heights. Screens 11 of different gap sizes are inserted into the screen assembly 5 to simulate different tunnel slot sizes. After the adjustment, grouting is started, the designed grouting speed is controlled, the pressure gauge 2 is observed, and grouting is stopped when the target pressure is reached. At this time, the filling degree and the grouting state of the grouting in the cavity can be directly observed, and the water containing volume in the water containing groove 10 is measured. When the test is finished, the air valve 3 is opened to release the pressure in the cavity, then the piston 6 is dismounted, and the main body of the testing device of the tunnel secondary lining supplementary grouting indoor module is cleaned, so that the test and the use of the device can be finished.
As shown in fig. 3 and 4, example two: on the basis of the first embodiment, the pipe body 510 is provided with an installation groove 511, the screen connecting portion includes a screen mounting seat 512 adapted to the installation groove 511, the screen mounting seat 512 is an arc-shaped structure fitted to the pipe wall of the pipe body 510, and a clamping groove for installing the screen 11 is formed in the inner side of the screen mounting seat 512. One end of the screen mounting seat 512 is hinged with one groove edge of the mounting groove 511. Realize like this to screen cloth 11's location, also ensure that the skew can not take place in the installation of screen cloth 11, through setting up foretell screen cloth mount pad 512, when needing to change screen cloth 11, with screen cloth 11 install on screen cloth mount pad 512 can, then with screen cloth mount pad 512 embedding in mounting groove 511, accomplish the change of screen cloth 11, very be adapted to the needs to the two lining supplementary slip casting simulation experiments in tunnel like this, more light, convenient change screen cloth 11. In order to facilitate the opening and closing operation of the screen mounting base 512, a handle or a pulling plate may be provided on the outer side of the screen mounting base 512.
Preferably, a latch 513 may be disposed on the tube 510 and the screen mounting seat 512, and when the screen mounting seat 512 is completely embedded in the tube 510, that is, after being folded with the tube 510, the latch 513 is locked, so as to provide a seal between the screen mounting seat 512 and the tube 510, the gasket 12 may be inserted into the edge position of the screen mounting seat 512.
One way of arranging the screen mounting seat 512 is to hinge the screen mounting seat 512 on the pipe body 510, and when a test is needed, after the screen 11 is mounted on the screen mounting seat 512, the screen mounting seat 512 is folded, so that the screen mounting seat 512 is not only convenient and integrated, but also can be prevented from being lost; the screen mesh 11 is mounted on the screen mesh mounting base 512, and a clamping groove may be provided on the inner side of the screen mesh mounting base 512, so that the screen mesh 11 is clamped in, axially limited, and radially fixed by friction.
As shown in fig. 5 and 6, example three: different from the second embodiment, the screen mounting seat 512 and the tube 510 are a split structure. Adopt split type structure with screen cloth mount pad 512 and body 510, when needs are tested, with the screen cloth installation back, in letting screen cloth mount pad 512 imbed mounting groove 511, adopt this kind of mode, can avoid the adapting unit problem that screen cloth mount pad 512 and body 510's connection brought.
The contents of the present invention have been explained above. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Based on the above-mentioned contents of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.
Claims (10)
1. Indoor simulation test testing arrangement of secondary lining supplementary slip casting, its characterized in that includes:
a transparent chamber;
the grouting channel is communicated with the water outlet of the transparent cavity and is used for injecting slurry into the cavity;
the exhaust channel is connected with the transparent chamber and is used for simulating the condition that the secondary lining of the tunnel is completely closed or not completely closed;
the screen assembly is provided with an inlet, an outlet and a screen, the inlet of the screen assembly is communicated with the chamber, and the screen assembly is used for simulating the bleeding condition when the tunnel lining has gaps with different sizes;
the device comprises a transparent cavity, a piston, a cavity, a grouting channel, an air inlet, a screen assembly and a screen assembly, wherein the piston used for moving along the gravity direction is arranged in the transparent cavity, a cavity above the piston is used for simulating a cavity of a tunnel secondary lining, a grout outlet of the grouting channel is located in the cavity, the air inlet of the air outlet channel is located in the cavity, and the screen assembly is communicated with the cavity.
2. The secondary lining supplementary grouting indoor simulation test device of claim 1, wherein at least two water outlets arranged along the gravity direction are arranged on the transparent chamber, and each water outlet is communicated with a screen assembly.
3. The secondary lining supplementary grouting indoor simulation test device of claim 1, wherein the screen assembly comprises a pipe body communicated with the water outlet of the chamber, and a screen connecting part for placing a screen in the pipe body is arranged on the pipe body.
4. The secondary lining supplementary grouting indoor simulation test device of claim 3, wherein a mounting groove is formed in the pipe body, the screen connecting part comprises a screen mounting seat matched with the mounting groove, the screen mounting seat is of an arc-shaped structure matched with the pipe wall of the pipe body, and a clamping groove for mounting a screen is formed in the inner side of the screen mounting seat.
5. The secondary lining supplementary grouting indoor simulation test device of claim 4, wherein one end of the screen mounting seat is hinged with one groove edge of the mounting groove; or, the screen mounting seat and the pipe body are of a split structure.
6. The secondary lining supplementary grouting indoor simulation test device of claim 1, wherein the water outlet is connected with leakage branch pipes, the leakage branch pipes are connected with a leakage main pipe extending along the gravity direction, and the leakage main pipe is connected with the inlet of the screen assembly.
7. The secondary lining supplementary grouting indoor simulation test device of claim 1, further comprising a graduated water containing tank, wherein the upper opening of the water containing tank is used for corresponding to the outlet of the screen assembly.
8. The secondary lining supplementary grouting indoor simulation test device of claim 1, wherein the exhaust passage and the grouting passage are movably arranged on the piston in a penetrating way.
9. The secondary lining supplementary grouting indoor simulation test device of claim 1, wherein a pressure detection device for detecting the air pressure of the cavity is arranged on the wall of the transparent chamber.
10. The secondary lining supplemental grouting indoor simulation test device according to claim 1, wherein a gas valve communicated with the cavity is arranged on the wall of the transparent chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921639268.4U CN211478318U (en) | 2019-09-27 | 2019-09-27 | Indoor simulation test testing arrangement of secondary lining replenishment slip casting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921639268.4U CN211478318U (en) | 2019-09-27 | 2019-09-27 | Indoor simulation test testing arrangement of secondary lining replenishment slip casting |
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| CN211478318U true CN211478318U (en) | 2020-09-11 |
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| CN201921639268.4U Active CN211478318U (en) | 2019-09-27 | 2019-09-27 | Indoor simulation test testing arrangement of secondary lining replenishment slip casting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112394021A (en) * | 2021-01-20 | 2021-02-23 | 西南交通大学 | Indoor testing arrangement of permeable pavement structure osmotic coefficient |
| CN112781968A (en) * | 2021-04-12 | 2021-05-11 | 西南交通大学 | Micro-motion abrasion test sample forming device among open-graded water distribution and stable gravel particles |
-
2019
- 2019-09-27 CN CN201921639268.4U patent/CN211478318U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112394021A (en) * | 2021-01-20 | 2021-02-23 | 西南交通大学 | Indoor testing arrangement of permeable pavement structure osmotic coefficient |
| CN112394021B (en) * | 2021-01-20 | 2021-04-09 | 西南交通大学 | Indoor testing arrangement of permeable pavement structure osmotic coefficient |
| CN112781968A (en) * | 2021-04-12 | 2021-05-11 | 西南交通大学 | Micro-motion abrasion test sample forming device among open-graded water distribution and stable gravel particles |
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