CN221256831U - Reverse circulation grouting device - Google Patents
Reverse circulation grouting device Download PDFInfo
- Publication number
- CN221256831U CN221256831U CN202421197540.9U CN202421197540U CN221256831U CN 221256831 U CN221256831 U CN 221256831U CN 202421197540 U CN202421197540 U CN 202421197540U CN 221256831 U CN221256831 U CN 221256831U
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- Prior art keywords
- anchor rod
- hollow anchor
- grouting
- cylindrical shell
- mounting hole
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- 239000002002 slurry Substances 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 239000011440 grout Substances 0.000 claims description 24
- 238000013016 damping Methods 0.000 claims description 9
- 238000007569 slipcasting Methods 0.000 claims description 5
- 239000011435 rock Substances 0.000 description 8
- 238000004873 anchoring Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The application discloses a reverse circulation grouting device, which comprises a slurry gas double-channel connector, wherein the slurry gas double-channel connector comprises a cylindrical shell; the grouting device is characterized in that a hollow anchor rod mounting hole A and a hollow anchor rod mounting hole B are respectively formed in the upper end and the lower end of the inner side face of the cylindrical shell, an exhaust channel is formed in the cylindrical shell, the exhaust channel is communicated with the bottom of the inner side face of the hollow anchor rod mounting hole A, a grouting hole is formed in the middle of the outer side face of the cylindrical shell, the grouting hole is communicated with the hollow anchor rod mounting hole B, an automatic sealing device is arranged at the position, close to the grouting hole, of the outer side face of the cylindrical shell, and the grouting device further comprises a hollow anchor rod.
Description
Technical Field
The application relates to the technical field of rock-soil anchoring, in particular to a reverse circulation grouting device.
Background
At present, in the rock-soil, mine and tunnel engineering, the anchor rod is widely applied, generally hollow grouting anchor rod support is used, after the anchor rod and the anchor head are placed into the drilled rock wall hole, grouting is carried out from the hollow anchor rod hole, and then grouting is formed by overflowing the anchor head into the rock wall hole.
When grouting is carried out to the place where the inclined upper part of the tunnel is supported, grout can flow backwards downwards along the anchor hole under the influence of gravity after being injected from the top of the anchor rod, and although a part of the anchor rod is provided with a special exhaust pipe, the anchor rod is blocked by the backflow grout, so that air in the anchor hole cannot be discharged; meanwhile, the external exhaust pipe is required to be contacted with the slurry, and the slurry can squeeze the exhaust pipe in the grouting process, so that the exhaust is unsmooth, a series of problems of insufficient grouting, insufficient slurry filling and the like occur, and the support strength is influenced.
The existing anchor rod mechanism for grouting the inclined upper supporting part of the tunnel mainly comprises a solid rod body, an anchor rod protecting cover, an external exhaust pipe and a plurality of connectors, the structure is too complex, the structure can only be manually operated step by step, the mechanical construction requirements cannot be met, and meanwhile, after grouting in an anchor hole is filled, a grouting opening needs to be plugged manually, so that grouting efficiency is seriously affected.
Disclosure of Invention
The application provides a reverse circulation grouting device which is suitable for grouting anchoring products of all rock supports, is particularly suitable for grouting supports of soft and hard rock and crushed rock, solves the problems that grouting is not full and can not adapt to mechanized construction due to slurry backflow when the existing tunnel is obliquely grouting upwards, and can effectively solve the problems in the background technology.
In order to achieve the above purpose, the present application provides the following technical solutions: the reverse circulation grouting device comprises a slurry gas double-channel connector, wherein the slurry gas double-channel connector comprises a cylindrical shell; the upper end and the lower end of the inner side surface of the cylindrical shell are respectively provided with a hollow anchor rod mounting hole A and a hollow anchor rod mounting hole B, the cylindrical shell is provided with an exhaust channel, the exhaust channel is communicated with the bottom of the inner side surface of the hollow anchor rod mounting hole A, the middle part of the outer side surface of the cylindrical shell is provided with a grouting hole, the grouting hole is communicated with the hollow anchor rod mounting hole B, the position, close to the grouting hole, of the outer side surface of the cylindrical shell is provided with an automatic sealing device, and the lower end surface of the cylindrical shell is provided with a grout stop plug for preventing grout from overflowing.
The reverse circulation grouting device further comprises two hollow anchor rods, wherein the two hollow anchor rods are detachably installed in the hollow anchor rod installation holes A and the hollow anchor rod installation holes B at the two ends of the grout-gas double-channel connector respectively.
Preferably, the exhaust channel is an exhaust groove, the exhaust groove is located in the cylindrical shell and is arranged along the direction of the hollow anchor rod mounting hole B, and the air outlet of the exhaust groove is formed in the bottom of the cylindrical shell.
Preferably, the hollow anchor rod mounting holes A and B are respectively provided with internal threads.
Preferably, the outer surface of the rod body of the hollow anchor rod is provided with a thread section, and the hollow anchor rod is connected with the hollow anchor rod mounting hole A and the hollow anchor rod mounting hole B through threads.
Preferably, the rod body of the hollow anchor rod is a full thread section.
Preferably, the automatic sealing device is an annular damping belt, an annular groove is formed in the middle of the outer side face of the cylindrical shell, and the annular damping belt is arranged in the annular groove.
Preferably, the automatic sealing device comprises an arc-shaped cover plate, and the upper end surface of the arc-shaped cover plate is rotationally connected with the outer side surface of the cylindrical shell.
Preferably, the rotation angle of the arc-shaped cover plate is 0-90 degrees.
Compared with the prior art, the application has the beneficial effects that:
1. The reverse circulation grouting device is suitable for grouting anchoring products of all rock supports, is particularly suitable for grouting supports of soft and hard rocks and crushed rocks, and solves the problems that grouting is not full and mechanical construction cannot be adapted due to slurry backflow when the existing tunnel is obliquely grouting upwards;
2. According to the reverse circulation grouting device, the automatic sealing device is arranged at the grouting opening, when grouting is stopped, the pressure in the grouting pipe disappears, the automatic sealing device is closed to realize the blocking of the grouting opening, so that slurry in an anchor hole is prevented from flowing back into an anchor rod, and the automatic sealing device adopts an annular damping belt or a metal cover plate with a rebound function;
3. This reverse circulation slip casting device, through bottom cavity stock slip casting, in grouting hole injection anchor eye on follow thick liquid gas binary channels connector, thick liquid is stopped by the grout stop stopper, gradually fills up the anchor eye, and air in the anchor eye is discharged from top cavity stock and exhaust groove to realize that grouting is full in the anchor eye, improve the anchoring effect.
Drawings
FIG. 1 is a cross-sectional view of a slurry gas dual channel connector of example 1;
FIG. 2 is a schematic view showing the internal structure of the slurry gas dual channel connector in example 1;
FIG. 3 is a schematic view of a hollow anchor rod structure;
FIG. 4 is a schematic structural view of the reverse circulation grouting device in example 1;
fig. 5 is a cross-sectional view of the slurry gas dual channel connector of example 2.
In the figure: the hollow anchor rod comprises a hollow anchor rod mounting hole A, a cylindrical shell body 2, a hollow anchor rod mounting hole B, a 4 annular damping belt, a 5 grout stop plug, a 6 grouting hole, a 7 exhaust groove and an 8 arc-shaped cover plate.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, if directional descriptions such as "upper", "lower", "front", "rear", "left", "right", etc. are referred to as directions or positional relationships based on those shown in fig. 1, they are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. When a feature is referred to as being "disposed," "secured" or "connected" to another feature, it can be directly disposed, secured or connected to the other feature or it can be indirectly disposed, secured or connected to the other feature.
The application provides the following technical scheme:
Example 1
Referring to fig. 1-4, a reverse circulation grouting device comprises a slurry gas dual-channel connector, wherein the slurry gas dual-channel connector comprises a cylindrical shell 2; the upper end and the lower end of the inner side surface of the cylindrical shell 2 are respectively provided with a hollow anchor rod mounting hole A1 and a hollow anchor rod mounting hole B3, the cylindrical shell 2 is provided with an exhaust channel, the exhaust channel is communicated with the bottom of the inner side surface of the hollow anchor rod mounting hole A1, the middle part of the outer side surface of the cylindrical shell 2 is provided with a grouting hole 6, the grouting hole 6 is communicated with the hollow anchor rod mounting hole B3, the position, close to the grouting hole 6, of the outer side surface of the cylindrical shell 2 is provided with an automatic sealing device, and the lower end surface of the cylindrical shell 2 is provided with a grout stop plug 5 for preventing grout from overflowing.
Specifically, the top hollow anchor rod and the bottom hollow anchor rod are respectively arranged on the hollow anchor rod mounting hole A1 and the hollow anchor rod mounting hole B3, when grouting is carried out from the hollow anchor rod mounting hole B3 to the anchor hole, grouting is carried out to the anchor hole through a grouting hole 6 in the middle of the outer side surface of the cylindrical shell 2, and air is discharged along the middle hole and the exhaust channel of the top hollow anchor rod; the grout stop plug 5 is made of rubber materials and is used for enabling the grout to flow downwards after being injected when the hollow anchor rod is installed upwards or obliquely downwards, so that leakage can be caused, and the grout stop plug 5 blocks the anchor hole to avoid the grout from overflowing.
More specifically, the automatic sealing device can completely cover the grouting holes 6, and when the grouting holes 6 stop grouting, the automatic sealing device can realize all the blocking of the grouting holes 6, and the number of the grouting holes 6 is not less than one.
This reverse circulation slip casting device still includes the cavity stock, the quantity of cavity stock is two, and two cavity stocks are installed respectively at the both ends of thick liquid gas binary channels connector.
Specifically, the hollow anchor rod installed on the hollow anchor rod installation hole A1 is divided into a proximal end and a distal end, wherein the proximal end is connected to the slurry gas double-channel connector, and the distal end stretches into the bottom of the anchor hole.
More specifically, the hollow anchor rod can be provided with different anchor heads according to actual working conditions.
Further, the exhaust channel is an exhaust groove 7, the exhaust groove 7 is located inside the cylindrical shell 2 and is arranged along the direction of the hollow anchor rod mounting hole B3, and an air outlet of the exhaust groove 7 is formed in the bottom of the cylindrical shell 2.
Specifically, the exhaust groove 7 avoids the installation of an exhaust pipe, so that the construction efficiency can be effectively improved; meanwhile, the exhaust groove 7 is not deformed by the slurry extrusion as compared with the internal exhaust pipe.
More specifically, the width of the exhaust groove 7 is generally 2-3mm, and when the slurry enters the exhaust groove 7, the slurry automatically blocks the exhaust groove 7, and at this time, the grouting is automatically stopped; the reverse circulation grouting device is a disposable component, is matched with an anchoring integrated machine for use, and can remarkably improve the construction efficiency.
Further, an annular groove is formed in the middle of the outer side face of the cylindrical shell 2, the automatic sealing device is an annular damping belt 4, and the annular damping belt 4 is arranged in the annular groove.
In particular, the annular damping band 4 can be made of rubber or other materials with rebound force, can be flushed by pressure during grouting, and can stop the back flow of slurry during grouting.
Further, the hollow anchor rod mounting holes A1 and the hollow anchor rod mounting holes B3 are respectively provided with internal threads.
Specifically, the screw thread sets up the dismantlement that has made things convenient for hollow screw rod.
Further, the outer surface of the rod body of the hollow anchor rod is provided with a thread section, and the thread section is connected with internal threads inside the hollow anchor rod mounting hole A1 and the hollow anchor rod mounting hole B3.
Further, the rod body of the hollow anchor rod is a full thread section.
Specifically, the two ends of the full-thread section anchor rod can be interchanged, so that the use convenience is improved.
Example 2
Referring to fig. 3 and 5, the main difference between embodiment 2 and embodiment 1 is that: the automatic sealing device is a movable baffle plate made of metal and other materials.
The reverse circulation grouting device comprises a slurry gas double-channel connector, wherein the slurry gas double-channel connector comprises a cylindrical shell 2; the upper end and the lower end of the inner side surface of the cylindrical shell 2 are respectively provided with a hollow anchor rod mounting hole A1 and a hollow anchor rod mounting hole B3, the cylindrical shell 2 is provided with an exhaust channel, the exhaust channel is communicated with the bottom of the inner side surface of the hollow anchor rod mounting hole A1, the middle part of the outer side surface of the cylindrical shell 2 is provided with a grouting hole 6, the grouting hole 6 is communicated with the hollow anchor rod mounting hole B3, the position, close to the grouting hole 6, of the outer side surface of the cylindrical shell 2 is provided with an automatic sealing device, and the lower end surface of the cylindrical shell 2 is provided with a grout stop plug 5 for preventing grout from overflowing.
This reverse circulation slip casting device still includes the cavity stock, the quantity of cavity stock is two, and two cavity stocks are detachable respectively in cavity stock mounting hole A1 and the cavity stock mounting hole B3 at thick liquid gas binary channels connector both ends.
Further, the exhaust channel is an exhaust groove 7, the exhaust groove 7 is located inside the cylindrical shell 2 and is arranged along the direction of the hollow anchor rod mounting hole B3, and an air outlet of the exhaust groove 7 is formed in the bottom of the cylindrical shell 2.
Further, the automatic sealing device comprises an arc-shaped cover plate 8, and the upper end face of the arc-shaped cover plate 8 is rotationally connected with the outer side face of the cylindrical shell 2.
Specifically, during grouting, the arc-shaped cover plate 8 is flushed away by the slurry, at the moment, the grouting holes 6 are opened, the slurry can be discharged through the grouting holes 6, and after grouting is stopped, the arc-shaped cover plate 8 automatically rotates to reset to seal the grouting holes 6 under the action of gravity, so that slurry diversion is avoided.
Further, the rotation angle of the arc-shaped cover plate 8 is 0-90 degrees.
Specifically, the arc-shaped cover plate 8 can rotate at a small angle, so that the situation that the rotation angle is too large to automatically reset is avoided.
Further, the hollow anchor rod mounting holes A1 and the hollow anchor rod mounting holes B3 are respectively provided with internal threads.
Further, the outer surface of the rod body of the hollow anchor rod is provided with a thread section, and the hollow anchor rod is connected with the hollow anchor rod mounting hole A1 and the hollow anchor rod mounting hole B3 through threads.
Further, the rod body of the hollow anchor rod is a full thread section.
When in use: firstly, an anchor hole is drilled by using a drilling machine, and then two hollow anchor rods are respectively connected with the hollow anchor rod mounting hole A1 and the hollow anchor rod mounting hole B3 through threads. The grout stop 5 is then mounted on the cylindrical housing 2. And (3) sending the connected top hollow anchor rod into the drilled anchor hole, so that the grout stop plug 5 blocks the anchor hole, and connecting the bottom hollow anchor rod with a grouting machine. And starting a grouting machine, conveying the grout forwards from the hollow anchor rod at the bottom, enabling the grout to enter a grouting hole 6 on the side surface of the cylindrical shell 2, and grouting the grout into the anchor hole by means of a pressure punching automatic sealing device. When the hollow anchor rod is grouting upwards, grout flows back downwards in the anchor hole and is blocked by the grout stop plug 5, the anchor hole is gradually filled with the grout under pressure, and air is discharged after entering the exhaust passage from the hollow anchor rod at the top. And finally, when the slurry in the anchor hole is filled, the slurry enters the exhaust passage from the middle hole of the hollow anchor rod at the top to block the exhaust passage, and the grouting is automatically stopped. After the grouting machine stops working, the pressure disappears, and the automatic sealing device rebounds or automatically returns to a position to block the grouting holes 6, so that the slurry is prevented from flowing back.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a reverse circulation slip casting device which characterized in that: comprises a slurry gas double-channel connector, wherein the slurry gas double-channel connector comprises a cylindrical shell (2); the grouting device is characterized in that a hollow anchor rod mounting hole A (1) and a hollow anchor rod mounting hole B (3) are respectively formed in the upper end and the lower end of the inner side surface of the cylindrical shell (2), an exhaust channel is formed in the cylindrical shell (2), the exhaust channel is communicated with the bottom of the inner side surface of the hollow anchor rod mounting hole A (1), a grouting hole (6) is formed in the middle of the outer side surface of the cylindrical shell (2), the grouting hole (6) is communicated with the hollow anchor rod mounting hole B (3), an automatic sealing device is arranged at the position, close to the grouting hole (6), of the outer side surface of the cylindrical shell (2), and a grout stop plug (5) for preventing grout from overflowing is arranged on the lower end surface of the cylindrical shell (2);
The grouting device comprises a grouting dual-channel connector, and is characterized by further comprising two hollow anchor rods, wherein the two hollow anchor rods are detachably arranged in a hollow anchor rod mounting hole A (1) and a hollow anchor rod mounting hole B (3) at two ends of the grouting dual-channel connector respectively.
2. The reverse circulation grouting device according to claim 1, wherein: the exhaust channel is an exhaust groove (7), the exhaust groove (7) is located in the cylindrical shell (2) and is arranged along the direction of the hollow anchor rod mounting hole B (3), and the air outlet of the exhaust groove (7) is arranged at the bottom of the cylindrical shell (2).
3. The reverse circulation grouting device according to claim 1, wherein: internal threads are arranged in the hollow anchor rod mounting hole A (1) and the hollow anchor rod mounting hole B (3).
4. A reverse circulation grouting device according to claim 3, wherein: the outer surface of the rod body of the hollow anchor rod is provided with a thread section, and the hollow anchor rod is connected with the hollow anchor rod mounting hole A (1) and the hollow anchor rod mounting hole B (3) through threads.
5. The reverse circulation grouting device according to claim 4, wherein: the rod body of the hollow anchor rod is a full thread section.
6. A reverse circulation grouting device according to any one of claims 1 to 5, wherein: the automatic sealing device is an annular damping belt (4), an annular groove is formed in the middle of the outer side face of the cylindrical shell (2), and the annular damping belt (4) is arranged in the annular groove.
7. A reverse circulation grouting device according to any one of claims 1 to 5, wherein: the automatic sealing device comprises an arc-shaped cover plate (8), and the upper end face of the arc-shaped cover plate (8) is rotationally connected with the outer side face of the cylindrical shell (2).
8. The reverse circulation grouting device according to claim 7, wherein: the rotation angle of the arc-shaped cover plate (8) is 0-90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421197540.9U CN221256831U (en) | 2024-05-29 | 2024-05-29 | Reverse circulation grouting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421197540.9U CN221256831U (en) | 2024-05-29 | 2024-05-29 | Reverse circulation grouting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221256831U true CN221256831U (en) | 2024-07-02 |
Family
ID=91656617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421197540.9U Active CN221256831U (en) | 2024-05-29 | 2024-05-29 | Reverse circulation grouting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221256831U (en) |
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2024
- 2024-05-29 CN CN202421197540.9U patent/CN221256831U/en active Active
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| Date | Code | Title | Description |
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