CN212867603U - Constant-resistance large-deformation grouting anchor rod - Google Patents
Constant-resistance large-deformation grouting anchor rod Download PDFInfo
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- CN212867603U CN212867603U CN202021398084.6U CN202021398084U CN212867603U CN 212867603 U CN212867603 U CN 212867603U CN 202021398084 U CN202021398084 U CN 202021398084U CN 212867603 U CN212867603 U CN 212867603U
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Abstract
The utility model is suitable for the soft rock mass engineering supporting field that is broken and has the characteristics of large deformation, and provides a constant-resistance large-deformation grouting anchor rod, which comprises a hollow grouting rod body, a constant-resistance sleeve, a nut, a grouting pipe and a grouting station, wherein the hollow grouting rod body comprises a rod body, rod body constant-resistance sawteeth and grouting holes; the constant-resistance sleeve comprises sleeve constant-resistance sawteeth and a tray; the grouting station comprises a slurry storage tank, a filter, a power pump, a one-way valve and a pressure gauge; the slip casting pipe is impressed the slurry into broken rock mass through the slip casting hole with the slurry by the slip casting station through the hollow body of rod, the utility model has the advantages of the constant resistance sawtooth set up to provide certain strut resistance for the rock mass, can make whole rock mass big deformation all be in a constant resistance state, the manometer can be controlled the slip casting condition according to the broken condition of different rock masses for broken rock mass becomes a more complete rock mass, and simple and practical has administered broken soft rock big deformation problem in the aspect of following two.
Description
Technical Field
The utility model belongs to the technical field of soft rock engineering is strutted, especially, relate to a permanent resistance large deformation slip casting stock.
Background
The problem of large deformation of soft rock generally exists in the field of geotechnical engineering, and in the process of geotechnical engineering construction in the fields of tunnels, water conservancy, mine roadways and the like, an anchor rod becomes support equipment which is most widely applied, and the obvious characteristic of the soft rock is that large deformation is easy to occur, so that collapse accidents are easy to cause due to difficult support, but the soft rock support is still an engineering problem at present, and the means for solving the soft rock support is relatively limited. The hollow grouting anchor rod is a common supporting tool, is buried in a stratum, and reinforces the stratum by the tensile strength of the self-height strength and the mode of closely combining the grouting body around the anchor rod and the stratum so as to improve the integrity of the stratum and control the deformation of the stratum to achieve a stable and safe state. The conventional supporting technology is difficult to simultaneously meet the characteristics of large deformation and grouting, namely, the rock mass is subjected to large deformation and simultaneously the rock mass is subjected to grouting reinforcement, namely, the good soft rock supporting effect is achieved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a permanent big slip casting stock that warp aims at solving traditional soft rock and struts the means, is difficult to satisfy and resists the more broken problem that just has the rock mass to warp greatly of soft rock.
The utility model is realized in such a way that a constant-resistance large-deformation grouting anchor rod comprises a hollow grouting rod body, a constant-resistance sleeve, a nut, a grouting pipe and a grouting station;
the hollow grouting rod body comprises a rod body, rod body constant-resistance sawteeth and a grouting hole; the constant-resistance sleeve comprises sleeve constant-resistance sawteeth and a tray; the constant-resistance sleeve and the rod body are both arranged into hollow structures, the tray is sleeved on the rod body and is fixedly connected with a rock wall through a nut, the nut is screwed at the rear part of the tray on the rod body, the constant-resistance sleeve is sleeved on the outer surface of the rod body, and the central hole of the grouting pipe is communicated with the grouting hole; the grouting station is connected with the hollow grouting rod body through a grouting pipe;
the grouting station comprises a slurry storage tank, a filter, a power pump, a one-way valve and a pressure gauge, and the pressure gauge is connected with the grouting pipe through a joint; the one-way valve is arranged in front of the pressure gauge and is in threaded connection with the grouting pipe, the inlet end of the one-way valve is connected with the outlet end of the power pump, the output end of the filter is connected with the inlet end of the power pump, the power pump is in threaded connection with the filter, and the inlet end of the filter is in threaded connection with the outlet end of the pulp storage box.
Preferably, the side wall of the rear end of the rod body is provided with threads, and the threads of the rod body are in standard fit with the threads on the nut.
Preferably, the nut adopts hemisphere or hexagon nut, and is provided with antifriction packing ring with the tray junction.
Preferably, a sealing sleeve is arranged on the constant-resistance sleeve, and the sealing sleeve is positioned at the front part of the tray.
Preferably, the check valve is a straight-through check valve.
Preferably, the tray is a butterfly tray.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to a permanent resistance large deformation slip casting stock, anchor the stock into broken rock mass, the body of rod can slide along the permanent resistance sleeve that sets up when the rock mass takes place the large deformation, provides certain deformation compensation, provides certain supporting resistance for the rock mass through the permanent resistance sawtooth that sets up, can make whole large deformation all be in a permanent resistance state; slurry is pressed into the broken rock mass from the grouting station through the hollow rod body and the grouting holes through the arranged connecting grouting pipes, grouting conditions are controlled through the arranged pressure gauge according to the breaking conditions of different rock masses, and grouting enables the broken rock mass to form a complete rock mass, so that collapse accidents of the rock mass cannot occur; the constant-resistance sleeve enables the rock mass to deform greatly and cannot collapse, grouting enables the broken rock mass to become a complete rock mass, and the problem of large deformation of broken soft rock is solved from two aspects, and the grouting device is simple and practical and can effectively control the geotechnical engineering problem of large deformation of soft rock.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a sectional view of the structure of the present invention;
fig. 3 is an enlarged view of the constant-resistance sleeve of the present invention.
In the figure: 1-hollow grouting rod body, 2-constant resistance sleeve, 3-nut, 4-grouting pipe, 5-grouting station, 6-pressure gauge, 7-one-way valve, 8-power pump, 9-filter, 10-grout storage tank, 11-rod body, 12-rod body constant resistance sawtooth, 13-grouting hole, 21-sleeve constant resistance sawtooth and 22-tray.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, the present invention provides a constant-resistance large-deformation grouting anchor rod: the grouting device comprises a hollow grouting rod body 1, a constant-resistance sleeve 2, a nut 3, a grouting pipe 4 and a grouting station 5;
the hollow grouting rod body 1 comprises a rod body 11, rod body constant-resistance sawteeth 12 and grouting holes 13; the constant-resistance sleeve 2 comprises sleeve constant-resistance sawteeth 21 and a tray 22; the constant-resistance sleeve 2 and the rod body 11 are both of hollow structures, the tray 22 is sleeved on the rod body 11 and is fixedly connected with a rock wall through a nut 3, the nut 3 is in threaded connection with the rear part of the tray 22 on the rod body 11, the constant-resistance sleeve 2 is sleeved on the outer surface of the rod body 11, and a central hole of the grouting pipe 4 is communicated with the grouting hole 13; the grouting station 5 is connected with the hollow grouting rod body 1 through a grouting pipe 4;
the grouting station comprises a slurry storage tank 10, a filter 9, a power pump 8, a one-way valve 7 and a pressure gauge 6, wherein the pressure gauge 6 is connected with the grouting pipe 4 through a joint; the one-way valve 7 is arranged in front of the pressure gauge 6 and is in threaded connection with the grouting pipe 4, the inlet end of the one-way valve 7 is connected with the outlet end of the power pump 8, the output end of the filter 9 is connected with the inlet end of the power pump 8, the input end of the power pump 8 is in threaded connection with the outlet end of the filter 9, and the inlet end of the filter 9 is in threaded connection with the outlet end of the slurry storage box 10.
Further, the side wall of the rear end of the rod body 11 is provided with a thread, and the thread of the rod body 11 is in standard fit with the thread on the nut 3.
In this embodiment, be provided with the screw thread through setting up the body of rod 11 rear end lateral wall, just the screw thread of the body of rod 11 with screw thread on the nut 3 is standard cooperation, has realized dismantling the connection, has solved the problem of traditional stock support length, also makes things convenient for stock installation and recovery simultaneously.
Further, the nut 3 is a hemispherical or hexagonal nut, and a friction-reducing washer is arranged at the joint of the nut and the tray 22.
In this embodiment, nut 3 adopts hemisphere or hexagon nut, and is provided with the antifriction packing ring with tray 22 junction, and the antifriction packing ring mainly acts on for reducing the frictional force between nut and the tray, makes the moment of torsion turn into the pretightning force, and 3 main effects of nut are for having increased tray 22 to the pretightning force of rock mass, and the prevention country rock is become flexible from the layer, improves anchoring strength.
Furthermore, a sealing sleeve is arranged on the constant-resistance sleeve 2 and is positioned at the front part of the tray.
In the embodiment, a sealing sleeve arranged on the constant-resistance sleeve 2 and arranged at the front part of the tray prevents flow loss generated in the grouting process and reduces corrosion of a connecting part.
Further, the check valve 7 is a straight-through check valve.
In the present embodiment, the through check valve 7 prevents the pump from being damaged by a sudden increase in the system pressure, and prevents the pressure from being adversely affected by gradually increasing the regulated pressure.
Further, the tray 22 is a butterfly tray.
In the embodiment, the butterfly-shaped tray 22 is arranged, and corresponding torque is applied to the nut 3 to enable the nut to be tightly pressed on the upper surface of the surrounding rock, so that the pre-tightening force of the butterfly-shaped tray 22 on the surrounding rock body is increased, the stress state of the surrounding rock is improved, the sliding of a separation layer and a structural plane of the surrounding rock can be effectively realized, and the anchoring strength is improved.
The utility model discloses a working process:
the anchor rod drilling is drilled on the broken tunnel rock body, the anchor rod is installed in the anchor rod drilling, when the rock body is deformed greatly, the hollow grouting rod body 1 of the anchor rod can slide along the constant-resistance sleeve 2, the anchor rod is in a constant-resistance state to the support of the rock body when the rock body is deformed greatly due to the constant-resistance sawteeth of the sleeve 21, and meanwhile, the anchor rod can also deform greatly, so that the rock body which is deformed greatly can not generate collapse accidents. When the rock mass takes place to be connected slip casting pipe 4 and the slip casting section of hollow slip casting body of rod 1 when the large deformation, then be connected slip casting pipe 4 and slip casting station 5, improve the stability of rock mass through carrying out the slip casting to broken rock mass for broken rock mass becomes stable rock mass because the adhesive effect of slurry. Grouting slurry is stored in a slurry storage box 10, slurry is pressed into a rock body through a power pump 8, the slurry entering the rock body needs to be filtered through a filter 9, large impurity blockage is prevented and treated, the pressed slurry cannot flow back into the slurry storage box 10 through a one-way valve 7, the pressure of the pressed slurry can be controlled through a pressure gauge 6 to control the grouting amount, and the pressure of the rock body with different crushing degrees needing grouting is determined by the actual situation on site. After grouting is finished, the grouting pipe 4 is disconnected from the anchor rod after the slurry is solidified, and grouting is finished.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a constant resistance large deformation slip casting stock which characterized in that: comprises a hollow grouting rod body (1), a constant-resistance sleeve (2), a nut (3), a grouting pipe (4) and a grouting station (5);
the hollow grouting rod body (1) comprises a rod body (11), rod body constant-resistance sawteeth (12) and grouting holes (13); the constant-resistance sleeve (2) comprises sleeve constant-resistance sawteeth (21) and a tray (22); the constant-resistance sleeve (2) and the rod body (11) are both of hollow structures, the tray (22) is sleeved on the rod body (11) and is fixedly connected with a rock wall through a nut (3), the nut (3) is in threaded connection with the rear part of the tray (22) on the rod body (11), the constant-resistance sleeve (2) is sleeved on the outer surface of the rod body (11), and a central hole of the grouting pipe (4) is communicated with the grouting hole (13); the grouting station (5) is connected with the hollow grouting rod body (1) through a grouting pipe (4);
the grouting station comprises a grout storage box (10), a filter (9), a power pump (8), a one-way valve (7) and a pressure gauge (6), wherein the pressure gauge (6) is connected with the grouting pipe (4) through a joint; check valve (7) are arranged in before manometer (6) and spiro union in on slip casting pipe (4), check valve (7) entry end with power pump (8) exit end links to each other, the output of filter (9) links to each other with the entrance point of power pump (8), pass through screw thread threaded connection between power pump (8) input and filter (9) exit end, filter (9) entrance point with it is screw thread threaded connection to store up thick liquid case (10) exit end.
2. The constant-resistance large-deformation grouting anchor rod as claimed in claim 1, wherein: the side wall of the rear end of the rod body (11) is provided with threads, and the threads of the rod body (11) are in standard fit with the threads on the nut (3).
3. The constant-resistance large-deformation grouting anchor rod as claimed in claim 1, wherein: the nut (3) adopts a hemispherical or hexagonal nut, and a friction reducing washer is arranged at the joint of the nut and the tray (22).
4. The constant-resistance large-deformation grouting anchor rod as claimed in claim 1, wherein: and a sealing sleeve is arranged on the constant-resistance sleeve (2), and is positioned at the front part of the tray.
5. The constant-resistance large-deformation grouting anchor rod as claimed in claim 1, wherein: the check valve (7) is a straight-through check valve.
6. The constant-resistance large-deformation grouting anchor rod as claimed in claim 1, wherein: the tray (22) is a butterfly tray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021398084.6U CN212867603U (en) | 2020-07-16 | 2020-07-16 | Constant-resistance large-deformation grouting anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021398084.6U CN212867603U (en) | 2020-07-16 | 2020-07-16 | Constant-resistance large-deformation grouting anchor rod |
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| Publication Number | Publication Date |
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| CN212867603U true CN212867603U (en) | 2021-04-02 |
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| CN202021398084.6U Active CN212867603U (en) | 2020-07-16 | 2020-07-16 | Constant-resistance large-deformation grouting anchor rod |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788538A (en) * | 2023-01-31 | 2023-03-14 | 中国矿业大学(北京) | Constant-resistance large-deformation hollow grouting-resin coupling anchoring bolt |
-
2020
- 2020-07-16 CN CN202021398084.6U patent/CN212867603U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788538A (en) * | 2023-01-31 | 2023-03-14 | 中国矿业大学(北京) | Constant-resistance large-deformation hollow grouting-resin coupling anchoring bolt |
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