Quick plugging device for sand filling pipe of immersed tunnel and using method of quick plugging device

Abstract

The invention relates to the field of tunnel construction engineering, in particular to a quick plugging device for a sand filling pipe of an immersed tunnel and a using method of the quick plugging device. Comprising a steel box body covering a sand filling pipe gushing outwards, the bottom of the steel box body is fixed to an immersed tube bottom plate so that a sealed space can be formed in the steel box body, and water gushing out of the sand filling pipe is accumulated in the steel box body; the inlet end of the grouting pipe is located outside the steel box body, the outlet end of the grouting pipe extends into the steel box body, and grouting is conducted in the steel box body through the grouting pipe so that the sand filling pipe can be blocked, and the sand filling pipe can be prevented from continuously gushing outwards; the drainage pipe is arranged at the top of the steel box body and is communicated with the interior of the steel box body, so that when grouting is carried out on the interior of the steel box body, accumulated water sprayed out of the interior of the steel box body is drained out of the drainage pipe. The device has the beneficial effects that the steel box body is arranged, the steel box body is fixed to the immersed tube bottom plate, so that the sand filling pipe is located in the steel box body, and when water bursts outwards from the sand filling pipe, the water is sealed in the steel box body, so that the sand filling pipe is quickly blocked, and the effect of preventing continuous gushing is achieved.

Description

Technical Field

[0001] The present invention relates to the field of tunnel construction engineering, in particular to a rapid plugging device for a sand-filling pipe in an immersed tunnel and a use method thereof. Background Art

[0002] During the construction of immersed tube tunnels, improvements to the foundation are often necessary. Currently, a common method involves installing sand-filling pipes on the bottom plate of the tunnel. Once the tunnel is in place, these pipes are used to improve the soil beneath it. During major repairs to immersed tube tunnels, these pipes can be disturbed, causing water and sand to gush outward. Therefore, effective emergency response measures are essential to address these potential risks. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a rapid sealing device for sand filling pipes in immersed tube tunnels and a method for using the same, so as to solve the problem that during the construction of existing immersed tube tunnels, sand filling pipes are set at the bottom plate of the immersed tube to improve the bottom soil through the sand filling pipes. During the overhaul of the immersed tube tunnel, the sand filling pipes may be disturbed, thereby causing sudden surges in the sand filling pipes.

[0004] The technical solution to achieve the above purpose is:

[0005] The present invention provides a rapid plugging device for a sand-filling pipe in an immersed tunnel, comprising:

[0006] A steel box body is used to cover the sand filling pipe gushing outwards, wherein the bottom of the steel box body is fixed to the bottom plate of the immersed tube so that the interior of the steel box body forms a sealed space, and the water gushing out of the sand filling pipe is accumulated in the steel box body;

[0007] At least one grouting pipe, the inlet end of the grouting pipe being located outside the steel box and the outlet end extending into the interior of the steel box, for grouting into the steel box through the grouting pipe to seal the sand filling pipe and prevent the sand filling pipe from continuing to gushed outward;

[0008] A drainage pipe is provided on the top of the steel box body, and the drainage pipe is communicated with the interior of the steel box body, so that when grouting is poured into the interior of the steel box body, the accumulated water gushing out from the interior of the steel box body is discharged from the drainage pipe.

[0009] Furthermore, it also includes:

[0010] A fixing plate provided at the bottom of the steel box, the fixing plate being annular in shape, the inner side of the fixing plate being fixed to the outer surface of the steel box;

[0011] At least two stiffening ribs fixed to the top of the fixing plate and the outer surface of the steel box to enhance the connection strength between the fixing plate and the steel box;

[0012] At least two expansion bolts are provided on the fixing plate. The expansion bolts pass through the fixing plate and are anchored into the bottom plate of the immersed tube, thereby fixing the steel box body.

[0013] Furthermore, a circular water-stopping rubber strip is provided at the bottom of the fixing plate.

[0014] Furthermore, a closing valve is provided on the drain pipe, and the opening and closing of the drain pipe is controlled by the closing valve.

[0015] Furthermore, it also includes a sand retaining net fixed on the inner wall of the steel box to block the sand and soil gushing out of the sand filling pipe to prevent it from being discharged from the drainage pipe.

[0016] The present invention also provides a method for using a rapid plugging device for a sand-filled pipe in an immersed tunnel. The specific method of use is as follows:

[0017] Use a steel box to cover the sand filling pipe gushing outwards, and fix the steel box to the bottom plate of the immersed tube. The sand and water gushing outwards from the sand filling pipe are accumulated in the steel box.

[0018] Pour mortar into the steel box through the grouting pipe, so that the mortar can drain the accumulated water in the steel box from the drainage pipe;

[0019] After the mortar reaches the designed strength, the steel box is removed.

[0020] Furthermore, the method for fixing the steel box to the bottom plate of the immersed tube is as follows:

[0021] Providing a circular fixing plate and fixing the fixing plate to the bottom of the steel box;

[0022] Place the steel box at the construction location, and make the fixing plate close to the bottom plate of the immersed tube;

[0023] At least two expansion bolts are provided, and the expansion bolts pass through the fixing plate and are anchored in the immersed tube bottom plate.

[0024] Furthermore, before placing the steel box at the construction location, a circular water-stopping rubber strip is provided and fixed to the bottom of the fixing plate, thereby improving the sealing effect between the fixing plate and the bottom plate of the immersed tube.

[0025] Furthermore, before installing the drain pipe, a closing valve is provided and installed in the drain pipe;

[0026] When the sand filling pipe gushes outward, close the sealing valve to seal the accumulated water and sand gushing out of the sand filling pipe in the steel box;

[0027] Before pouring mortar into the steel box, the closing valve is opened so that the mortar squeezes out the accumulated water in the steel box from the drain pipe during the pouring of mortar;

[0028] When the mortar is discharged from the drain pipe, it is determined that the accumulated water in the steel box has been drained, and then the grouting is stopped and the closing valve is closed, and the grouting pipe is blocked at the same time.

[0029] Furthermore, before fixing the steel box, a sand retaining net is provided and fixed to the inner wall of the steel box, so that when pouring mortar, the sand retaining net blocks the sand in the steel box to prevent it from being discharged from the drain pipe.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1) A steel box is provided and fixed to the bottom plate of the immersed tube, so that the sand filling pipe is located inside the steel box. When water gushes out of the sand filling pipe, the water is sealed in the steel box, thereby quickly blocking the sand filling pipe and preventing further gushing.

[0032] 2) By setting up grouting pipes and drainage pipes, mortar is poured into the steel box through the grouting pipes, and the accumulated water in the steel box is discharged. After the mortar is completely solidified, the grouting pipes are permanently sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a top view of the rapid plugging device for the sand-filling pipe of an immersed tunnel according to the present invention.

[0034] Figure 2 It is a side sectional view of the rapid plugging device for the sand filling pipe of the immersed tube tunnel according to the present invention.

[0035] Legend: 1. Expansion bolt; 2. Fixing plate; 3. Stiffening rib; 4. Steel box; 5. Drain pipe; 6. Closing valve; 7. Water-stop rubber strip; 8. Grouting pipe; 9. Sand retaining net; 10. Sand filling pipe; 11. Submerged tube bottom plate. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] See Figure 1The present invention provides a rapid plugging device for a sand filling pipe in an immersed tube tunnel and a method for using the device, which solves the problem that, during the construction of an existing immersed tube tunnel, a sand filling pipe is set at the bottom plate of the immersed tube to improve the soil at the bottom of the tunnel. During the overhaul of the immersed tube tunnel, the sand filling pipe may be disturbed, thereby causing a sudden surge in the sand filling pipe. 1) By setting a steel box body and fixing the steel box body to the bottom plate of the immersed tube, the sand filling pipe is located in the steel box body. When water gushes out of the sand filling pipe, the water is sealed in the steel box body, thereby quickly plugging the sand filling pipe and preventing further gushing.

[0038] 2) By setting up grouting pipes and drainage pipes, mortar is poured into the steel box through the grouting pipes, and the accumulated water in the steel box is discharged. After the mortar is completely solidified, the grouting pipes are permanently sealed.

[0039] The following describes a rapid plugging device for a sand-filled pipe in an immersed tunnel and a method for using the device in conjunction with the accompanying drawings.

[0040] See Figure 1 , showing a top view of the rapid plugging device for the sand filling pipe of the immersed tube tunnel according to the present invention. Figure 2 , shows a side sectional view of the rapid plugging device for the sand filling pipe of the immersed tube tunnel of the present invention. Figure 1 and Figure 2 , a rapid plugging device for sand-filling pipes in immersed tunnels and a method of using the same are described in the present invention.

[0041] like Figure 1 and Figure 2 As shown, the present invention provides a rapid plugging device for a sand-filled pipe in an immersed tunnel, comprising:

[0042] A steel box 4 is provided to cover the sand filling pipe 10 gushing outwards. The bottom of the steel box 4 is fixed to the bottom plate 11 of the immersed tube to form a sealed space inside the steel box 4. The water gushing out of the sand filling pipe 10 is accumulated in the steel box 4.

[0043] at least one grouting pipe 8, the inlet end of the grouting pipe 8 being located outside the steel box 4 and the outlet end extending into the interior of the steel box 4, for grouting into the steel box 4 through the grouting pipe 8 to seal the sand filling pipe 10 to prevent the sand filling pipe 10 from continuing to gushed outward;

[0044] A drainage pipe 5 is provided on the top of the steel box body 4 , and the drainage pipe 5 is communicated with the interior of the steel box body 4 , so that when grouting is poured into the interior of the steel box body 4 , the accumulated water gushing out from the interior of the steel box body 4 is discharged from the drainage pipe 5 .

[0045] Specifically, the inlet end of the grouting pipe 8 is connected to a slurry pipe. The steel box 4 is cylindrical in shape and has no bottom. The height and size of the steel box 4 are greater than those of the sand filling pipe 10, so that the steel box 4 can cover the sand filling pipe 10.

[0046] In a preferred embodiment, two grouting pipes 8 are provided.

[0047] In a specific embodiment, it also includes:

[0048] A fixing plate 2 is provided at the bottom of the steel box 4, the fixing plate 2 is annular, and the inner side of the fixing plate 2 is fixed to the outer surface of the steel box 4;

[0049] At least two stiffening ribs 3 are fixed to the top of the fixing plate 2 and the outer surface of the steel box 4 to enhance the connection strength between the fixing plate 2 and the steel box 4;

[0050] At least two expansion bolts 1 are provided on the fixing plate 2 . The expansion bolts 1 pass through the fixing plate 2 and are anchored into the immersed tube bottom plate 11 , thereby fixing the steel box 4 .

[0051] Specifically, there are eight expansion bolts 1 and eight stiffening ribs 3 , and the expansion bolts 1 and the stiffening ribs 3 are staggered with each other.

[0052] In one embodiment, a circular water-stopping rubber strip 7 is provided at the bottom of the fixing plate 2. The water-stopping rubber strip 7 enables a seal between the fixing plate 2 and the immersed tube bottom plate 11, thereby preventing water or mortar in the steel box 4 from leaking.

[0053] In a specific embodiment, a closing valve 6 is provided on the drain pipe 5 , and the opening and closing of the drain pipe 5 are controlled by the closing valve 6 .

[0054] In one embodiment, a sand retaining net 9 is further provided on the inner wall of the steel box 4 to block the sand and soil gushing out of the sand filling pipe 10 and prevent it from being discharged from the drainage pipe 5. The sand retaining net 9 can prevent the soil from flowing out of the drainage pipe 5, ensuring that only water can flow out of the steel box 4.

[0055] The present invention also provides a method for using a rapid plugging device for a sand-filled pipe in an immersed tunnel. The specific method of use is as follows:

[0056] Use a steel box 4 to cover the sand filling pipe 10 gushing outward, and fix the steel box 4 on the sinking tube bottom plate 11. The sand and water gushing outward from the sand filling pipe 4 are accumulated in the steel box 4.

[0057] Pour mortar into the steel box 4 through the grouting pipe 8, so that the mortar can drain the accumulated water in the steel box 4 from the drain pipe 5;

[0058] After the mortar reaches the designed strength, the steel box 4 is removed.

[0059] In one embodiment, the method for fixing the steel box 4 to the immersed tube bottom plate 11 is as follows:

[0060] Provide a circular fixing plate 2, and fix the fixing plate 2 to the bottom of the steel box 4;

[0061] Place the steel box 4 at the construction location, and make the fixing plate 2 close to the immersed tube bottom plate 11;

[0062] At least two expansion bolts 1 are provided, and the expansion bolts 1 pass through the fixing plate 2 and are anchored into the immersed tube bottom plate 11 .

[0063] In a specific embodiment, before the steel box 4 is placed at the construction location, a circular water-stop rubber strip 7 is provided and the water-stop rubber strip 7 is fixed to the bottom of the fixed plate 2, thereby improving the sealing effect between the fixed plate 2 and the immersed tube bottom plate 11.

[0064] In a specific embodiment, before installing the drain pipe 5 , a closing valve 6 is provided and installed in the drain pipe 5 ;

[0065] When the sand filling pipe 10 gushes outward, the sealing valve 6 is closed, thereby sealing the accumulated water and sand gushing out of the sand filling pipe 10 in the steel box 4;

[0066] Before pouring mortar into the steel box 4, open the closing valve 6 so that when pouring mortar, the mortar can squeeze out the accumulated water in the steel box 4 from the drain pipe;

[0067] When the mortar is discharged from the drain pipe 5 , it is determined that the accumulated water in the steel box 4 has been drained, and then the grouting is stopped and the closing valve 6 is closed, and the grouting pipe 8 is blocked at the same time.

[0068] In a specific embodiment, before fixing the steel box body 4 , a sand retaining net 9 is provided and fixed to the inner wall of the steel box body 4 , so that when pouring mortar, the sand retaining net 9 blocks the sand in the steel box body 4 and prevents it from being discharged from the drain pipe 5 .

[0069] The following describes in detail the use of the rapid plugging device for the sand filling pipe of an immersed tunnel according to the present invention.

[0070] Before use, the rapid sealing device is assembled.

[0071] When water and sand are found gushing out of the sand filling pipe 10, the steel box 4 is quickly buckled onto the sand filling pipe 10 and the sealing valve 6 is closed. At this time, the fixing plate 2 is tightly attached to the sinking tube bottom plate 11, and the water-stop rubber strip 7 can prevent water leakage between the fixing plate 2 and the sinking tube bottom plate 11. Then, the steel box 4 is fixed to the sinking tube bottom plate 11 through the fixing plate 2 using the expansion bolts 1. This blocks the water or sand gushing out of the sand filling pipe 10 within the steel box 4, achieving a rapid sealing effect.

[0072] Then connect the grouting pipe 8 to the slurry pipe, open the sealing valve 6, and pour grout into the steel box 4 through the slurry pipe and the grouting pipe 8. At the same time, pouring in the mortar will drain the accumulated water in the steel box 4 through the drain pipe 5. When the mortar begins to be discharged from the drain pipe 5, it is determined that the accumulated water in the steel box 4 has been drained, stop grouting, close the sealing valve 6, then remove the slurry pipe and block the grouting pipe 8.

[0073] After the mortar is completely solidified and reaches the designed strength, the device is removed, thereby permanently sealing the sand filling pipe 10.

[0074] The present invention has been described in detail above with reference to the embodiments of the accompanying drawings. A person skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention. The scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. A rapid plugging device for sand filling pipes in immersed tunnels, characterized by: include: A steel box (4) covers the sand filling pipe (10) gushing outward, wherein the bottom of the steel box (4) is fixed to the bottom plate (11) of the submerged tube so that a sealed space is formed inside the steel box (4), and water gushing out of the sand filling pipe (10) is accumulated in the steel box (4); at least one grouting pipe (8), the inlet end of the grouting pipe (8) being located outside the steel box (4) and the outlet end extending into the interior of the steel box (4), and grouting the steel box (4) through the grouting pipe (8) to seal the sand filling pipe (10) to prevent the sand filling pipe (10) from continuing to gushing outward; A drainage pipe (5) is provided on the top of the steel box (4), and the drainage pipe (5) is connected to the interior of the steel box (4), so that when grouting is performed inside the steel box (4), the accumulated water gushing out from the interior of the steel box (4) is discharged from the drainage pipe (5).

2. The rapid plugging device for sand filling pipes in immersed tunnels according to claim 1, characterized in that: Also includes: A fixing plate (2) is provided at the bottom of the steel box (4), the fixing plate (2) is in the shape of a circular ring, and the inner side of the fixing plate (2) is fixed to the outer surface of the steel box (4); At least two stiffening ribs (3) are fixed to the top of the fixing plate (2) and the outer surface of the steel box (4) to enhance the connection strength between the fixing plate (2) and the steel box (4); At least two expansion bolts (1) are provided on the fixing plate (2), and the expansion bolts (1) pass through the fixing plate (2) and are anchored in the immersed tube bottom plate (11), thereby achieving fixation of the steel box body (4).

3. The rapid plugging device for sand filling pipes in immersed tunnels according to claim 2, characterized in that: A circular water-stopping rubber strip (7) is provided at the bottom of the fixing plate (2).

4. The rapid plugging device for sand filling pipes in immersed tunnels according to claim 1, characterized in that: The drain pipe (5) is provided with a closing valve (6), and the opening and closing of the drain pipe (5) are controlled by the closing valve (6).

5. The rapid plugging device for sand filling pipes in immersed tunnels according to claim 1, characterized in that: It also includes a sand retaining net (9) fixed on the inner wall of the steel box (4) to block the sand and soil gushing out of the sand filling pipe (10) to prevent it from being discharged from the drainage pipe (5).

6. A method for using the rapid plugging device for sand-filled pipes in immersed tunnels according to claim 1, characterized in that: The specific usage is as follows: A steel box (4) is used to cover the sand filling pipe (10) gushing outward, and the steel box (4) is fixed on the sinking tube bottom plate (11), so that the sand and water gushing outward from the sand filling pipe (4) are accumulated in the steel box (4); Pouring mortar into the steel box (4) through the grouting pipe (8) so that the mortar can discharge the accumulated water in the steel box (4) through the drainage pipe (5); After the mortar reaches the designed strength, the steel box (4) is removed.

7. The method for using the rapid plugging device for the sand-filling pipe of an immersed tunnel according to claim 6, characterized in that: The method for fixing the steel box (4) to the immersed tube bottom plate (11) is as follows: Providing a circular fixing plate (2), and fixing the fixing plate (2) to the bottom of the steel box (4); Placing the steel box (4) at the construction location, and making the fixing plate (2) close to the immersed tube bottom plate (11); At least two expansion bolts (1) are provided, and the expansion bolts (1) pass through the fixing plate (2) and are anchored in the immersed tube bottom plate (11).

8. The method for using the rapid plugging device for the sand-filling pipe of an immersed tunnel according to claim 7, characterized in that: Before the steel box (4) is placed at the construction location, a circular water-stopping rubber strip (7) is provided and the water-stopping rubber strip (7) is fixed to the bottom of the fixing plate (2), thereby improving the sealing effect between the fixing plate (2) and the immersed tube bottom plate (11).

9. The method for using the rapid plugging device for the sand-filling pipe of an immersed tunnel according to claim 6, characterized in that: Before installing the drain pipe (5), a closing valve (6) is provided and installed in the drain pipe (5); When the sand filling pipe (10) gushes outward, the sealing valve (6) is closed, thereby sealing the accumulated water and sand gushing out of the sand filling pipe (10) in the steel box (4); Before pouring mortar into the steel box (4), the closed valve (6) is opened, so that when pouring mortar, the mortar squeezes out the accumulated water in the steel box (4) from the drain pipe; When the mortar is discharged from the drain pipe (5), it is determined that the accumulated water in the steel box (4) has been drained, and then the grouting is stopped and the closing valve (6) is closed, and the grouting pipe (8) is blocked at the same time.

10. The method for using the rapid plugging device for the sand-filling pipe of an immersed tunnel according to claim 6, characterized in that: Before the steel box (4) is fixed, a sand retaining net (9) is provided and fixed to the inner wall of the steel box (4), so that when mortar is poured, the sand retaining net (9) blocks the sand in the steel box (4) and prevents it from being discharged from the drainage pipe (5).

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