A method for treating water leakage in tunnel deformation joints

Abstract

The present application relates to a method for handling water leakage in a tunnel deformation joint, which comprises the following steps: along the length direction of the deformation joint, two mounting holes are drilled on the non-leaking section of the deformation joint, and the two mounting holes meet the following conditions: the two mounting holes are respectively located at the two ends of the water leakage section of the deformation joint, and the distance between the end of the water leakage section of the deformation joint and the mounting hole on its side is a set value; according to the width of the water leakage section of the deformation joint, the distance between the two mounting holes, and the thickness of the tunnel structure, the length and width of the first water stop strip are determined; along the length direction of the deformation joint, the first water stop strip is squeezed into the part of the deformation joint located between the two mounting holes, and the first water stop strip is filled into the mounting hole; and caulking glue is injected from the mounting hole. The first water stop strip is installed through the mounting hole and squeezed into the deformation joint to cover the water leakage area, and in combination with the use of caulking glue, the leaked water is sealed in the water leakage area, and there is no need to destroy the auxiliary sealing structure on a large scale.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel structure and tunnel construction, and in particular to a method for treating water leakage at a tunnel deformation joint. Background Art

[0002] In recent years, with the large-scale construction of highways, railways and urban subways, more and more open-cut tunnel projects have emerged. These tunnel projects are buried deep underground and surrounded by water all year round, which tests the waterproof ability of the tunnel. However, due to the limitations of technology and construction level, the waterproof problem of tunnels has always been a technical problem in the industry, and many existing or newly built tunnels have experienced leakage. Tunnel leakage includes deformation joint leakage, wall panel crack leakage and construction joint leakage, and deformation joint leakage is the most common.

[0003] In some related technologies, expansion waterstop is generally used to seal deformation joints. The water-expanding waterstop is based on excellent bentonite. Through physical and chemical modification, it has the function of absorbing water and swelling, and the elasticity of general elastomers. It has better water-stopping effect under constraint conditions. However, there are the following problems:

[0004] The disadvantage is that after repeated expansion, the expansion effect of the water-swelling waterstop will gradually deteriorate, so it needs to be replaced. However, during the replacement process, the original concrete, U-shaped plate or other auxiliary blocking structures need to be removed, and then the new waterstop strips need to be installed and then re-sealed. This replacement method causes large-scale damage to the auxiliary blocking structure, and the construction cost and cycle are long. Summary of the invention

[0005] An embodiment of the present application provides a method for treating water leakage in a tunnel deformation joint, so as to solve the problem in the related art that the replacement process of the expansion waterstop requires large-scale destruction of the auxiliary blocking structure.

[0006] In a first aspect, a method for treating water leakage in a tunnel deformation joint is provided, which comprises the following steps:

[0007] Two mounting holes are drilled on the non-leaking section of the deformation joint along the length direction of the deformation joint, wherein the two mounting holes meet the following conditions: the two mounting holes are respectively located at the two ends of the leaking section of the deformation joint, and the distance between the end of the leaking section of the deformation joint and the mounting hole on the side where it is located is a set value;

[0008] The length and width of the first water stop strip are determined according to the width of the leaking section of the deformation joint, the distance between the two installation holes, and the thickness of the tunnel structure;

[0009] Along the length direction of the deformation joint, squeeze the first water stop strip into the portion of the deformation joint between the two mounting holes, and fill the two mounting holes at both ends of the first water stop strip respectively;

[0010] Inject caulking adhesive into the mounting holes.

[0011] In some embodiments, the first water stop strip is divided into two sections;

[0012] The two segments of the first water stop strip are installed as follows: a portion of each segment is filled into the installation hole and squeezed into the non-leaking section of the deformation joint; the remaining portion of each segment is squeezed into the leaking section of the deformation joint.

[0013] In some embodiments, a knocking rod is used to fill a portion of each segment into the mounting hole;

[0014] The remaining part of each segment is bent, and then the remaining part of each segment is hot-melted and connected by hot-melt equipment to form a hot-melt point;

[0015] Use a tapping rod to squeeze the rest of each segment into the leaking section of the expansion joint.

[0016] In some embodiments, the knock rod is L-shaped, and the length of a portion of the knock rod extending into the mounting hole is smaller than the diameter of the first water stop strip.

[0017] In some embodiments, the length of the first water stop strip is determined according to the following formula:

[0018]

[0019] Among them, l is the length of the first water stop strip, L is the length of the leakage section of the deformation joint, and B is the thickness of the tunnel structure.

[0020] In some embodiments, the diameter of the mounting hole is 60-70 mm, and the hole depth is half the thickness of the tunnel structure, and the diameter of the mounting hole is greater than the width of the deformation joint;

[0021] The first water stop strip is a rubber water stop strip with a diameter of 40 to 50 mm.

[0022] In some embodiments, injecting caulking glue from the mounting hole includes the following steps:

[0023] A glue injection tube is arranged in the installation hole, and the glue injection tube is extended between the first water stop strip and the embedded steel edge rubber water stop strip in the wall;

[0024] A second water stop strip is arranged in the installation hole provided with the glue injection tube to fill the installation hole;

[0025] Use the glue injection tube to inject the caulking glue.

[0026] In some embodiments, the caulking adhesive is a high modulus polyurethane caulking adhesive.

[0027] In some embodiments, the length of the second water stop strip is equal to the depth of the mounting hole; the diameter of the second water stop strip is 10 to 20 mm;

[0028] The distance between the end of the leaking section of the expansion joint and the mounting hole on its side is 1000-1200mm.

[0029] In some embodiments, when the leaking section of the deformation joint is located on the tunnel side wall, in addition to removing the joint caulking glue, the tunnel side wall and the stainless steel water receiving box need to be removed; after completing the step of injecting the caulking glue from the installation hole, the tunnel side wall and the stainless steel water receiving box need to be restored;

[0030] When the leaking section of the expansion joint is located on the top surface of the tunnel, in addition to removing the joint caulking glue, the top plate surface decoration plate also needs to be removed; after completing the step of injecting the caulking glue from the installation hole, the top plate surface decoration plate also needs to be restored.

[0031] The beneficial effects of the technical solution provided by this application include:

[0032] The embodiment of the present application provides a method for handling water leakage in a tunnel deformation joint. Since the installation holes are formed by expanding the original deformation joints at the non-leaking sections of the deformation joints at both ends of the leaking section near the deformation joints, it is only necessary to expand the original deformation joints, thereby reducing the difficulty of drilling holes. Furthermore, the first water stop strip is installed through the installation hole and squeezed into the leaking section of the deformation joint and the non-leaking section of the deformation joint, so that both the leaking section of the deformation joint and the non-leaking section of the deformation joint can be sealed, that is, the leaking area of ​​the embedded steel edge rubber water stop strip is fully covered, and the use of caulking glue is used to seal the leaked water in the leaking area and does not leak out, so that the leakage can be plugged without disassembling the embedded steel edge rubber water stop strip. Such a leakage handling method does not require large-scale destruction of the auxiliary sealing structure and replacement of the embedded steel edge rubber water stop strip in the wall. In addition, it has no impact on the safety of the tunnel structure, and water stopping can be quickly constructed without interrupting tunnel traffic. The water stopping measures are highly targeted, the construction cost is low, and the process is relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic cross-sectional view of a tunnel after forming a mounting hole according to an embodiment of the present application;

[0035] Figure 2 Provided for the embodiments of this application Figure 1 Schematic diagram of the cross section at AA;

[0036] Figure 3 Provided for the embodiments of this application Figure 1 Schematic diagram of the cross section at BB;

[0037] Figure 4 A schematic diagram of a non-leaking section of a first water stop strip not squeezed into a deformation joint provided in an embodiment of the present application;

[0038] Figure 5 Provided for the embodiments of this application Figure 4 Schematic diagram of the cross section at CC;

[0039] Figure 6 Provided for the embodiments of this application Figure 4 Schematic diagram of the cross section at DD;

[0040] Figure 7 A schematic diagram of the steps of using a knocking rod for the first water stop strip provided in an embodiment of the present application;

[0041] Figure 8 Provided for the embodiments of this application Figure 7 Schematic diagram of the cross section at EE;

[0042] Fig. 9 A schematic diagram of the steps of bending and hot-melting the first water stop strip provided in an embodiment of the present application;

[0043] Fig.10 Provided for the embodiments of this application Fig. 9 Schematic diagram of the cross section at FF;

[0044] Fig.11 A schematic diagram of the steps of injecting glue and installing the second water stop strip provided in an embodiment of the present application;

[0045] Fig.12 Provided for the embodiments of this application Fig.11 Schematic diagram of the cross section at GG in the middle.

[0046] In the figure: 1. Installation hole; 2. Leaking section of expansion joint; 3. Embedded steel edge rubber waterstop; 4. Non-leaking section of expansion joint; 5. First waterstop strip; 6. Knock rod; 7. Hot melt point; 8. Second waterstop strip; 9. Glue injection tube; 10. Caulking glue. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0048] An embodiment of the present application provides a method for treating water leakage in a tunnel deformation joint, so as to solve the problem in the related art that the replacement process of the expansion waterstop requires large-scale destruction of the auxiliary blocking structure.

[0049] See also Figure 1-Figure 12 , a method for treating water leakage in a tunnel deformation joint, comprising the following steps:

[0050] First, two mounting holes 1 are drilled on the non-leaking section 4 of the deformation joint along the length direction of the deformation joint, wherein the two mounting holes 1 meet the following conditions: the two mounting holes 1 are respectively located at the two ends of the leaking section 2 of the deformation joint, and the distance between the end of the leaking section 2 of the deformation joint and the mounting hole 1 on its side is a set value; the distance between the end of the leaking section 2 of the deformation joint and the mounting hole 1 on its side is 1000-1200mm.

[0051] According to the width of the leaking section 2 of the deformation joint, the distance between the two mounting holes 1, and the thickness of the tunnel structure, the required length and width of the first water stop strip 5 are determined;

[0052] Along the length direction of the deformation joint, squeeze the first water stop strip 5 into the portion of the deformation joint between the two mounting holes 1, and fill the two mounting holes 1 at both ends of the first water stop strip 5;

[0053] Inject caulking glue 10 from the mounting hole 1.

[0054] The first water stop strip 5 can be a complete one or divided into two parts which are finally connected into a whole.

[0055] Through the above steps, since the installation hole 1 is formed by expanding the original deformation joint in the non-leaking section 4 of the deformation joint at both ends of the leaking section 2 near the deformation joint, it is only necessary to expand the original deformation joint, thereby reducing the difficulty of drilling; furthermore, the first waterstop strip 5 is installed through the installation hole 1, and squeezed into the leaking section 2 of the deformation joint and the non-leaking section 4 of the deformation joint, so that the leaking section 2 of the deformation joint and the non-leaking section 4 of the deformation joint can be sealed, that is, the leaking area of ​​the embedded steel edge rubber waterstop strip 3 is fully covered, and the use of the caulking glue 10 is combined to make the leaked water sealed in the leaking area and will not leak out, so that the leakage can be plugged without disassembling the embedded steel edge rubber waterstop strip 3; such a leakage treatment method does not require large-scale destruction of the auxiliary sealing structure, and replacement of the embedded steel edge rubber waterstop strip in the wall; in addition, it has no impact on the safety of the tunnel structure, and waterstopping can be quickly constructed without interrupting tunnel traffic. The waterstop measures are highly targeted, the construction cost is low, and the process is relatively simple.

[0056] In some preferred embodiments, the installation steps of the first water stop strip 5 are described as follows:

[0057] When the number of the first water stop strip 5 can be a complete one, there are two installation methods:

[0058] The first method is to squeeze the first water stop strip 5 into the leaking section 2 of the deformation joint, then fill it into the installation hole 1, and finally squeeze it from the installation hole 1 into the non-leaking section 4 of the deformation joint.

[0059] The second method is to first fill the first water stop strip 5 into the mounting hole 1, then squeeze it into the non-leaking section 4 of the deformation joint on the side corresponding to the mounting hole 1, and then squeeze it into the leaking section 2 of the deformation joint; then fill it into the remaining mounting hole 1, and finally squeeze the first water stop strip 5 into the non-leaking section 4 of the deformation joint on the side corresponding to the mounting hole 1.

[0060] In some preferred embodiments, when the first water stop strip 5 is divided into two sections, the final installation state is: part of each section is filled into the installation hole 1 and squeezed into the non-leaking section 4 of the deformation joint; the rest of each section is squeezed into the leaking section 2 of the deformation joint; please refer to the attached Figure 2-10 There are two ways to install:

[0061] The first method is to squeeze each segment of the first water stop strip 5 into the leaking section 2 of the deformation joint, then fill it into the corresponding installation hole 1, and then squeeze it into the non-leaking section 4 of the deformation joint, and finally heat-melt the connection between the two segments to form a hot melting point 7.

[0062] The second method is to first use the knocking rod 6 to fill part of each segment into the installation hole 1, and squeeze it into the non-leaking section 4 of the deformation joint to bend the rest of each segment, and then use the hot melt equipment to hot-melt the rest of each segment to form a hot melt point 7; finally, use the knocking rod 6 to squeeze the rest of each segment into the leaking section 2 of the deformation joint. This is the best embodiment. Now it is fixed at the installation hole 1 to avoid the influence of water flow and avoid displacement of the installed first water stop strip 5.

[0063] In some preferred embodiments, the length of the first water stop strip 5 is determined according to the following formula:

[0064]

[0065] Wherein, l is the length of the first water stop strip 5, L is the length of the water leakage section 2 of the deformation joint, and B is the thickness of the tunnel structure. The diameter of the installation hole 1 is 60-70 mm, and its hole depth h is half of the thickness B of the tunnel structure. The diameter of the installation hole 1 is greater than the width b of the deformation joint; the first water stop strip 5 is a rubber water stop strip with a diameter of 40-50 mm.

[0066] In some preferred embodiments, injecting the caulking glue 10 from the mounting hole 1 comprises the following steps:

[0067] A glue injection tube 9 is arranged in the installation hole 1, and the glue injection tube 9 is extended between the first water stop strip 5 and the embedded steel edge rubber water stop strip 3 in the wall; a second water stop strip 8 is arranged in the installation hole 1 provided with the glue injection tube 9 to fill the installation hole 1; and a caulking glue 10 is injected by the glue injection tube 9, and the caulking glue 10 is a high modulus polyurethane caulking glue. The length of the second water stop strip 8 is equal to the depth of the installation hole 1.

[0068] The diameter of the second water stop strip 8 is 10 to 20 mm. In this case, after the first water stop strip 5 is knocked with the knock rod 6 until the leaking section 2 of the deformation joint and the non-leaking section 4 of the deformation joint are completely blocked, a portion of the first water stop strip 5 still exists in the installation hole 1.

[0069] The diameter of the second water stop strip 8 is 40-50 mm. In this case, after the first water stop strip 5 is knocked by the knocking rod 6 until the leaking section 2 of the deformation joint and the non-leaking section 4 of the deformation joint are completely blocked, the first water stop strip 5 is just tangent to the bottom of the installation hole 1.

[0070] Thereby, the second water stop strip 8 and the first water stop strip 5 of the mounting hole 1, the first water stop strip 5 squeezed into the deformation joint, the embedded steel edge rubber water stop strip 3 and the concrete structure are tightly connected together to avoid water leakage.

[0071] In some preferred embodiments, when the leaking section 2 of the deformation joint is located on the tunnel side wall, in addition to removing the joint caulking glue 10, the tunnel side wall and the stainless steel water receiving box need to be removed; after completing the step of injecting the caulking glue 10 from the installation hole 1, the tunnel side wall and the stainless steel water receiving box need to be restored;

[0072] When the leaking section 2 of the deformation joint is located on the top surface of the tunnel, in addition to removing the joint caulking glue 10, the top plate surface decoration plate also needs to be removed; after completing the step of injecting the caulking glue 10 from the installation hole 1, the top plate surface decoration plate also needs to be restored.

[0073] The physical performance indicators of the materials used for the second water stop strip 8 and the first water stop strip 5 must meet the "Technical Specifications for Waterproofing of Underground Engineering".

[0074] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0075] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0076] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A method for treating water leakage in tunnel deformation joints, characterized in that: It includes the following steps: Two mounting holes (1) are drilled on the non-leaking section (4) of the deformation joint along the length direction of the deformation joint, wherein the two mounting holes (1) satisfy the following conditions: the two mounting holes (1) are respectively located at two ends of the leaking section (2) of the deformation joint, and the distance between the end of the leaking section (2) of the deformation joint and the mounting hole (1) on the side where the end of the leaking section (2) of the deformation joint is located is a set value; The length and width of the first water stop strip (5) are determined according to the width of the water leakage section (2) of the deformation joint, the distance between the two installation holes (1), and the thickness of the tunnel structure; Along the length direction of the deformation joint, the first water stop strip (5) is squeezed into the portion of the deformation joint located between the two mounting holes (1), and the two ends of the first water stop strip (5) are respectively filled into the two mounting holes (1); Injecting the caulking glue (10) from the mounting hole (1); injecting the caulking glue (10) from the mounting hole (1) comprises the following steps: A glue injection tube (9) is arranged in the installation hole (1), and the glue injection tube (9) is extended between the first water stop strip (5) and the embedded steel edge rubber water stop strip (3) in the wall; A second water stop strip (8) is arranged in the installation hole (1) provided with the glue injection tube (9) to fill the installation hole (1); The caulking glue (10) is injected by using a glue injection tube (9), and the caulking glue (10) is a high modulus polyurethane caulking glue.

2. The method for treating water leakage in tunnel deformation joints according to claim 1, characterized in that: The first water stop strip (5) is divided into two sections; The two segments of the first water stop strip (5) are installed in the following manner: a portion of each segment is filled into the installation hole (1) and squeezed into the non-leaking segment (4) of the deformation joint; and the remaining portion of each segment is squeezed into the leaking segment (2) of the deformation joint.

3. The method for treating water leakage in tunnel deformation joints according to claim 2, characterized in that: Using a knocking rod (6) to fill a portion of each segment into the mounting hole (1); The remaining part of each segment is bent, and then the remaining part of each segment is hot-melted and connected by hot-melt equipment to form a hot-melt point (7); The remaining part of each segment is squeezed into the leaking section (2) of the deformation joint using a knocking rod (6).

4. The method for treating water leakage in a tunnel deformation joint according to claim 3, characterized in that: The knock rod (6) is L-shaped, and the length of the portion thereof extending into the mounting hole (1) is smaller than the diameter of the first water stop strip (5).

5. The method for treating water leakage in tunnel deformation joints according to claim 1, characterized in that: The diameter of the mounting hole (1) is 60 to 70 mm, and the hole depth is half the thickness of the tunnel structure. The diameter of the mounting hole (1) is greater than the width of the deformation joint. The first water stop strip (5) is a rubber water stop strip with a diameter of 40 to 50 mm.

6. The method for treating water leakage in tunnel deformation joints according to claim 1, characterized in that: The caulking glue (10) is a high modulus polyurethane caulking glue.

7. The method for treating water leakage in tunnel deformation joints according to claim 1, characterized in that: The length of the second water stop strip (8) is equal to the depth of the mounting hole (1); the diameter of the second water stop strip (8) is 10 to 20 mm or 40 to 50 mm; The distance between the end of the water leakage section (2) of the deformation joint and the mounting hole (1) on the side where the water leakage section (2) is located is 1000-1200 mm.

8. The method for treating water leakage in tunnel deformation joints according to claim 1, characterized in that: When the leaking section (2) of the deformation joint is located on the tunnel side wall, in addition to removing the joint caulking glue (10), the tunnel side wall and the stainless steel water receiving box need to be removed; after completing the step of injecting the caulking glue (10) from the installation hole (1), the tunnel side wall and the stainless steel water receiving box need to be restored; When the leaking section (2) of the deformation joint is located on the top surface of the tunnel, in addition to removing the joint caulking glue (10), it is also necessary to remove the top plate surface decoration plate; after completing the step of injecting the caulking glue (10) from the installation hole (1), it is also necessary to restore the top plate surface decoration plate.

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