Submarine tunnel surrounding rock anchoring water stop grouting device

Abstract

The utility model relates to the field of submarine tunnel construction, especially sea tunnel surrounding rock anchoring water stop grouting device, including grouting pipe and membrane bag, grouting pipe is equipped with expansion piece, grouting pipe passes through expansion piece, and grouting pipe is connected with expansion piece screw thread, membrane bag is set up in the outer wall of grouting pipe and surrounds, and membrane bag is connected with grouting pipe and forms grouting space, membrane bag is equipped with pipe body, and pipe body communicates with grouting space, the grouting hole is blocked by the membrane bag grouting of membrane bag, and the grouting hole is avoided to leak, when carrying out submarine tunnel grouting construction, the grouting hole is blocked before the surrounding rock grouting operation of membrane bag, and the cement mortar in the surrounding rock is avoided with water and flows out, can the cement solidification of grouting operation injection be better reinforced to surrounding rock, thereby guaranteeing the grouting operation quality of submarine tunnel.

Description

Technical Field

[0001] This utility model relates to the field of submarine tunnel construction, and in particular to a grouting device for anchoring and water-stopping the surrounding rock of submarine tunnels. Background Technology

[0002] During tunnel construction, grouting is typically used to reinforce the surrounding rock, improving its stability during excavation and thus ensuring tunnel strength, worker safety, and construction quality. Grouting operations are usually carried out using grouting anchors. This involves inserting grouting anchors into grouting holes in the surrounding rock and injecting pressurized cement grout into the rock through the anchors. The surrounding rock is then reinforced after the cement grout solidifies.

[0003] However, for submarine tunnels, since the tunnel excavation location is underwater, pressurized water will seep into the tunnel during the excavation process. Submarine tunnel grouting not only needs to reinforce the surrounding rock, but also needs to seal the leakage points. When conventional grouting anchor rod grouting is used, the liquid cement grout will seep out with the water, resulting in poor grouting reinforcement effect on the surrounding rock and difficulty in sealing the leakage points. This leads to a long construction cycle for submarine tunnel grouting and affects the construction progress of the submarine tunnel. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies in grouting construction for submarine tunnels, such as poor grouting effect and long grouting construction cycle, and to provide a grouting device for anchoring and water-stopping the surrounding rock of submarine tunnels.

[0005] This utility model provides a grouting device for anchoring and sealing water in the surrounding rock of a submarine tunnel, comprising: The grouting pipe is equipped with an expansion member, the grouting pipe passes through the expansion member, and the grouting pipe is threadedly connected to the expansion member; A membrane bag is provided around the outer wall of the grouting pipe, and the membrane bag is connected to the grouting pipe to form a grouting space; the membrane bag is provided with a pipe body, and the pipe body is in communication with the grouting space.

[0006] Preferably, the membrane bag is fitted with several rubber rings, which compress the membrane bag to adhere to the outer wall of the grouting pipe.

[0007] Preferably, a plurality of the rubber rings are arranged at intervals along the axial direction of the grouting pipe.

[0008] Preferably, along the radial direction of the grouting pipe, the membrane bag has a maximum distance A from the axis of the grouting pipe, and the expansion member has a maximum distance B from the axis of the grouting pipe, wherein the maximum distance A is less than the maximum distance B.

[0009] Preferably, the grouting pipe is provided with a retaining part and a grout-stopping plug, the grouting pipe passes through the grout-stopping plug, the grout-stopping plug is slidably connected to the grouting pipe, the grout-stopping plug is located at the end of the membrane bag away from the expansion member, and the grout-stopping plug can abut against the retaining part; the pipe body passes through the grout-stopping plug.

[0010] Preferably, the grouting pipe is provided with an anchor plate, the grouting pipe passes through the anchor plate, the clamping part can abut against the anchor plate, the grout stop plug can abut against the anchor plate, and the pipe body passes through the anchor plate.

[0011] Preferably, the expansion member includes a cylindrical structural member, the grouting pipe is coaxially arranged with the cylindrical structural member, and the cylindrical structural member is threadedly connected to the grouting pipe; the cylindrical structural member is provided with a pushing member and a plurality of retaining members, the pushing member abuts against the retaining members, the pushing member is rotatably connected to the grouting pipe, the grouting pipe is provided with a limiting step, the limiting step abuts against the pushing member; one end of the retaining member is hinged to the cylindrical structural member, and the other end is provided with a spring member, the spring member being connected to the cylindrical structural member.

[0012] Preferably, the pipe body is provided with a grouting bend, the grouting bend is provided with a connection port, the connection port is away from the grouting pipe, the connection port is provided with a sealing element, and the sealing element is detachably connected to the grouting bend.

[0013] Preferably, the grouting pipe is provided with a grouting port, and the outer wall of the grouting pipe is provided with a threaded connection part, which is used to connect with the grouting equipment.

[0014] Preferably, the membrane bag comprises a nylon component.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides a grouting device for anchoring and sealing water in the surrounding rock of a submarine tunnel. After setting grouting holes in the surrounding rock of the submarine tunnel, a grouting pipe is inserted into the grouting hole, with one end of the grouting pipe protruding from the surrounding rock. By connecting the grouting equipment to the grouting pipe, the grouting pipe grouts the surrounding rock. After the grouting pipe reaches the specified depth, the expansion member can abut against the outer wall of the grouting hole, fixing the grouting pipe at the designated position in the grouting hole, preventing the grouting pipe from coming out of the grouting hole due to backlash during grout injection. To prevent water leakage from the grouting hole from affecting the grouting quality, a membrane bag is inserted into the grouting hole along with the grouting pipe during the grouting operation. Cement grout is injected into the grouting space through the pipe body, causing the membrane bag to expand and seal the grouting hole, preventing water leakage from the grouting hole. During the surrounding rock grouting operation, cement grout leakage is prevented, allowing the surrounding rock to be quickly reinforced by cement grout, preventing cement grout leakage, thereby ensuring the reinforcement effect of the surrounding rock, shortening the grouting construction period, and accelerating the construction process of the submarine tunnel.

[0016] 2. This utility model provides a grouting device for anchoring and sealing water in the surrounding rock of a submarine tunnel. It has a simple structure, is easy to manufacture, and is convenient to use. By grouting the membrane bag, the grouting hole is sealed, preventing water leakage. During the grouting construction of the submarine tunnel, the membrane bag seals the grouting hole before the surrounding rock grouting operation, preventing the cement grout injected into the surrounding rock from flowing out with the water. This allows the cement injected during the grouting operation to solidify and better reinforce the surrounding rock, thereby ensuring the quality of the grouting operation in the submarine tunnel. It has good economic and practical value. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the subsea tunnel surrounding rock anchoring and water-stopping grouting device of this utility model; Figure 2 This is a cross-sectional structural schematic diagram of the expansion component of the subsea tunnel surrounding rock anchoring and water-stopping grouting device of this utility model. Figure 3 This is a partial cross-sectional view of the membrane bag of the subsea tunnel surrounding rock anchoring and water-stopping grouting device of this utility model. Figure 4 This is a partially enlarged structural schematic diagram of the subsea tunnel surrounding rock anchoring and water-stopping grouting device of this utility model.

[0018] Marked in the image: 1-Grouting pipe, 11-Grouting port, 12-Threaded connection, 13-Limiting step, 2-Membrane bag, 21-Grouting space, 3-Expansion component, 31-Clamping component, 32-Spring component, 33-Pushing component, 4-Pipe body, 41-Grouting bend, 42-Sealing component, 5-Rubber ring, 6-Grouting stop plug, 7-Clamping part, 8-Anchor plate. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0020] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0022] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0023] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0024] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0025] Example 1 like Figures 1-4As shown, the grouting device for anchoring and sealing water in the surrounding rock of an undersea tunnel is specifically composed of a grouting pipe 1 and a membrane bag 2. The grouting pipe 1 is equipped with an expansion member 3, through which the grouting pipe 1 passes, and the grouting pipe 1 is threadedly connected to the expansion member 3. When the grouting pipe 1 extends into the grouting hole, the grouting pipe 1 carries the expansion member 3 into the grouting hole. After the grouting pipe 1 reaches the designated position, it abuts against the hole wall of the grouting hole through the expansion member 3, thus fixing the grouting pipe 1. The membrane bag 2 is arranged around the outer wall of the grouting pipe 1, and the membrane bag 2 is connected to the grouting pipe 1 to form a grouting space 21. The membrane bag 2 is located between the rotating part and the expansion member 3. The membrane bag 2 is equipped with a pipe body 4, which is connected to the grouting space 21. Before grouting the surrounding rock, cement grout is injected into the grouting space 21 through the pipe body 4, causing the membrane bag 2 to expand and preventing water from flowing out from the gap between the grouting hole and the grouting pipe 1.

[0026] After setting grouting holes in the surrounding rock of the submarine tunnel, grouting pipe 1 is inserted into the grouting hole, with one end of grouting pipe 1 protruding from the surrounding rock. By connecting the grouting equipment to grouting pipe 1, grouting pipe 1 grouts the surrounding rock. After grouting pipe 1 reaches the specified depth, expansion member 3 can abut against the outer wall of the grouting hole, fixing grouting pipe 1 in the designated position of the grouting hole and preventing grouting pipe 1 from coming out of the grouting hole due to backlash during grout injection. To prevent water leakage from the grouting hole from affecting the grouting quality, during grouting operations, membrane bag 2 is inserted into the grouting hole along with grouting pipe 1. Cement grout is injected into the grouting space 21 through pipe body 4, causing membrane bag 2 to expand and seal the grouting hole, preventing water leakage from the grouting hole. During the surrounding rock grouting operation, cement grout leakage is prevented, allowing the surrounding rock to be quickly reinforced by cement grout, thus ensuring the reinforcement effect of the surrounding rock, shortening the grouting construction period, and accelerating the construction process of the submarine tunnel.

[0027] In one or more embodiments, a plurality of rubber rings 5 ​​are fitted on the membrane bag 2, and the rubber rings 5 ​​squeeze the membrane bag 2 against the outer wall of the grouting pipe 1; specifically, the rubber rings 5 ​​are fitted on the outer wall of the membrane bag 2 to reduce the space occupied by the membrane bag 2 when it is not grouted, so that the operator can extend the grouting pipe 1 to the designated position of the grouting hole during construction; the rubber rings 5 ​​are elastic ring-shaped parts, and the rubber rings 5 ​​can expand or shrink with the membrane bag 2.

[0028] In an optional embodiment, several rubber rings 5 ​​are arranged at intervals along the axial direction of the grouting pipe 1 so that the membrane bag 2 is uniformly compressed.

[0029] In an optional embodiment, along the radial direction of the grouting pipe 1, the membrane bag 2 and the axis of the grouting pipe 1 have a maximum distance A, and the expansion member 3 and the axis of the grouting pipe 1 have a maximum distance B, with the maximum distance A being less than the maximum distance B. Specifically, when drilling the grouting hole, the diameter of the grouting hole is made slightly larger than the maximum diameter of the expansion member 3. While the expansion member 3 is being inserted into the grouting hole, the membrane bag 2 is ensured to extend into the grouting hole along with the grouting pipe 1, which facilitates operation by the operator.

[0030] In one or more embodiments, the grouting pipe 1 is provided with a retaining part 7 and a grout-stopping plug 6. The grouting pipe 1 passes through the grout-stopping plug 6, and the grout-stopping plug 6 is slidably connected to the grouting pipe 1. The grout-stopping plug 6 is located at the end of the membrane bag 2 away from the expansion member 3, and the grout-stopping plug 6 can abut against the retaining part 7. The pipe body 4 passes through the grout-stopping plug 6, and the grout-stopping plug 6 is placed into the grouting port 11 to prevent a large amount of cement grout from overflowing. The grout-stopping plug 6 enhances the sealing effect of water leakage. The grout-stopping plug 6 is conical, and the grouting pipe 1 passes through the grout-stopping plug 6 from the axis of the grout-stopping plug 6.

[0031] In an optional embodiment, the grouting pipe 1 is provided with an anchor plate 8, the grouting pipe 1 passes through the anchor plate 8, the clamping part 7 can abut against the anchor plate 8, the grout stop plug 6 can abut against the anchor plate 8, the pipe body 4 passes through the anchor plate 8, the anchor plate 8 provides a larger sealing area, thereby sealing the grouting hole and preventing cement grout from leaking out of the grouting hole during grouting, the grouting pipe 1 passes through the middle of the anchor plate 8, and the anchor plate 8 is a rectangular plate.

[0032] In an optional embodiment, the expansion member 3 is a cylindrical structure, and the grouting pipe 1 is coaxially arranged with the cylindrical structure. The cylindrical structure is threadedly connected to the grouting pipe 1. The cylindrical structure is provided with a pushing member 33 and several retaining members 31. The pushing member 33 abuts against the retaining members 31, and the pushing member 33 is rotatably connected to the grouting pipe 1. The grouting pipe 1 is provided with a limiting step 13, which abuts against the pushing member 33. One end of the retaining member 31 is hinged to the cylindrical structure, and the other end is provided with a spring member 32. The spring member 32 is connected to the cylindrical structure. After the expansion member 3 is in place, it is held in place by a lever. The clamping part 7 on the grouting pipe 1 is clamped by hand, causing the clamping part 7 to drive the grouting pipe 1 to rotate, causing the expansion member 3 and the grouting pipe 1 to undergo relative displacement. Within the expansion member 3, in the axial direction of the grouting pipe 1, the relative position of the cylindrical structure and the pushing member 33 changes, causing the pushing member 33 to push the clamping member 31, so that the clamping member 31 abuts against the inner wall of the grouting hole, thereby fixing the grouting pipe 1. Specifically, there are three clamping members 31, which are arranged in a ring around the circumference of the cylindrical structure. The three clamping members 31 can open simultaneously to abut against the inner wall of the grouting hole.

[0033] In one or more embodiments, the pipe body 4 is provided with a grouting bend 41, the grouting bend 41 is provided with a connection port, the connection port is away from the grouting pipe 1, the connection port is provided with a sealing element 42, the sealing element 42 is detachably connected to the grouting bend 41, so that the connection port is away from the grouting pipe 1 to avoid misoperation, and after the grouting of the membrane bag 2 is completed, the connection port is sealed by the sealing element 42 to prevent the backflow of cement slurry.

[0034] In one or more embodiments, the grouting pipe 1 is provided with a grouting port 11, and the outer wall of the grouting pipe 1 is provided with a threaded connection part 12. The threaded connection part 12 is used to connect with the grouting equipment, and the threaded connection part 12 facilitates the connection with the grouting equipment.

[0035] In one or more embodiments, the membrane bag 2 includes a nylon component. Nylon has high tensile strength, which allows the membrane bag 2 to expand in volume after grouting, thereby better sealing the grouting hole.

[0036] In this embodiment, the subsea tunnel surrounding rock anchoring and water-stopping grouting device is used by inserting the grouting pipe 1 into the grouting hole, rotating the grouting pipe 1 to open the expansion member 3, thereby fixing the grouting pipe 1. Then, grout is injected into the membrane bag 2 through the connection port on the pipe body 4. After the membrane bag 2 seals the grouting hole, water leakage from the grouting hole is prevented. Then, the grouting equipment is connected to the grouting port 11 to grout the surrounding rock of the subsea tunnel.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grouting device for anchoring and sealing water in the surrounding rock of an undersea tunnel, characterized in that, include: Grouting pipe (1), the grouting pipe (1) is provided with an expansion member (3), the grouting pipe (1) passes through the expansion member (3), and the grouting pipe (1) is threadedly connected to the expansion member (3); A membrane bag (2) is arranged around the outer wall of the grouting pipe (1). The membrane bag (2) is connected to the grouting pipe (1) to form a grouting space (21). The membrane bag (2) is provided with a pipe body (4), which is connected to the grouting space (21).

2. The subsea tunnel surrounding rock anchoring and water-stopping grouting device according to claim 1, characterized in that, The membrane bag (2) is fitted with several rubber rings (5), which squeeze the membrane bag (2) against the outer wall of the grouting pipe (1).

3. The subsea tunnel surrounding rock anchoring and water-stopping grouting device according to claim 2, characterized in that, Several rubber rings (5) are arranged at intervals along the axial direction of the grouting pipe (1).

4. The subsea tunnel surrounding rock anchoring and water-stopping grouting device according to claim 3, characterized in that, Along the radial direction of the grouting pipe (1), the membrane bag (2) has a maximum distance A from the axis of the grouting pipe (1), and the expansion member (3) has a maximum distance B from the axis of the grouting pipe (1), wherein the maximum distance A is less than the maximum distance B.

5. The subsea tunnel surrounding rock anchoring and water-stopping grouting device according to claim 1, characterized in that, The grouting pipe (1) is provided with a retaining part (7) and a grout stopper (6). The grouting pipe (1) passes through the grout stopper (6). The grout stopper (6) is slidably connected to the grouting pipe (1). The grout stopper (6) is located at the end of the membrane bag (2) away from the expansion member (3). The grout stopper (6) can abut against the retaining part (7). The pipe body (4) passes through the grout stopper (6).

6. The subsea tunnel surrounding rock anchoring and water-stopping grouting device according to claim 5, characterized in that, The grouting pipe (1) is provided with an anchor plate (8), the grouting pipe (1) passes through the anchor plate (8), the clamping part (7) can abut against the anchor plate (8), the grout stop plug (6) can abut against the anchor plate (8), and the pipe body (4) passes through the anchor plate (8).

7. The subsea tunnel surrounding rock anchoring and water-stopping grouting device according to claim 6, characterized in that, The expansion member (3) includes a cylindrical structure. The grouting pipe (1) is coaxially arranged with the cylindrical structure. The cylindrical structure is threadedly connected to the grouting pipe (1). The cylindrical structure is provided with a pushing member (33) and several retaining members (31). The pushing member (33) abuts against the retaining members (31). The pushing member (33) is rotatably connected to the grouting pipe (1). The grouting pipe (1) is provided with a limiting step (13). The limiting step (13) abuts against the pushing member (33). One end of the retaining member (31) is hinged to the cylindrical structure, and the other end is provided with a spring member (32). The spring member (32) is connected to the cylindrical structure.

8. The subsea tunnel surrounding rock anchoring and water-stopping grouting device according to claim 1, characterized in that, The pipe body (4) is provided with a grouting bend (41), the grouting bend (41) is provided with a connection port, the connection port is away from the grouting pipe (1), the connection port is provided with a sealing element (42), and the sealing element (42) is detachably connected to the grouting bend (41).

9. The subsea tunnel surrounding rock anchoring and water-stopping grouting device according to claim 1, characterized in that, The grouting pipe (1) is provided with a grouting port (11), and the outer wall of the grouting pipe (1) is provided with a threaded connection part (12), which is used to connect with the grouting equipment.

10. The subsea tunnel surrounding rock anchoring and water-stopping grouting device according to any one of claims 1-9, characterized in that, The membrane bag (2) includes a nylon component.

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