Installation method of tunnel second lining leakage water receiving device

Abstract

The invention relates to the field of constructional engineering equipment, in particular to an installation method of a tunnel secondary lining leakage water receiving device which is convenient to machine and install, accelerates the construction progress and reduces damage to secondary lining steel bars and concrete. The installation method of the external water receiving device for leaked water comprises the following steps that firstly, loose concrete is knocked off, and the concrete within the crack range is reinforced through an iron gauze; 2, determining the width of the externally-hung water receiving device according to the water leakage range and the water leakage amount, then performing segmentation according to the equal arc length according to the inner contour of the tunnel secondary lining to form a plurality of externally-hung segmented water receiving devices for water leakage, and numbering the externally-hung segmented water receiving devices in sequence; step 3, aligning the leaked water externally-hung segmented water receiving devices with corresponding numbers at the vault of the tunnel according to the center line of the vault, connecting in a lap joint manner, and fixing the leaked water externally-hung segmented water receiving devices on a second lining of the tunnel through expansion bolts; and step 4, plugging with a waterproof sealant.

Description

Technical Field

[0001] The invention relates to the field of construction engineering equipment, and in particular to an installation method of a tunnel secondary lining leakage water receiving device. Background Art

[0002] The water diversion method of water collection box for tunnel lining leakage is an effective method for dealing with tunnel leakage. It collects and guides the leakage water by setting up a water collection box, thereby reducing damage to the tunnel structure and ensuring the safe operation of the tunnel. At present, the common practice for tunnel lining leakage is to dig grooves and bury pipes. It is necessary to dig trapezoidal grooves in the secondary lining structure, bury semicircular pipes, and then fill them with plugging materials. However, for the construction joints of the arch of the highway tunnel that has been opened to traffic, there is leakage, and the side wall is infiltrated in a small area. The contour inside the tunnel is an arc, and the semicircular pipe is difficult to bend, process and install. The construction time of grooving and burying pipes is long, and it will cause certain damage to the secondary lining steel bars and concrete. Summary of the invention

[0003] Therefore, in view of the above-mentioned problems, the present invention provides a method for installing a tunnel secondary lining leakage water collection device, which is easy to process and install, speeds up the construction progress, and reduces the damage to the secondary lining steel bars and concrete.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A method for installing a water collection device for water leakage in a tunnel secondary lining, the water collection device comprising a water leakage external hook water collection device and a water leakage internal hook water collection device, when the tunnel secondary lining is leaking, the water leakage external hook water collection device is installed at the water leakage location of the tunnel secondary lining; when the tunnel secondary lining is seeping, the water leakage internal hook water collection device is installed at the water leakage location of the tunnel secondary lining;

[0006] The installation method of the leaking external water receiving device comprises the following steps:

[0007] Step 1: Take a vehicle-mounted aerial platform to the tunnel vault, knock off the loose concrete, and reinforce the concrete within the crack range with wire mesh;

[0008] Step 2: Determine the width of the external water connection device according to the scope and amount of water leakage, and then divide it into equal arc lengths according to the inner contour of the second lining of the tunnel to form multiple leakage external segmented water connection devices, and number them in sequence;

[0009] Step 3: Align the corresponding numbered external water-leakage plug-in segmented water-collecting devices at the tunnel vault along the center line of the vault, extend the external water-leakage plug-in segmented water-collecting devices to both ends of the length, and install the external water-leakage plug-in segmented water-collecting devices in sequence according to the numbering sequence, using overlapping connections, align the adjacent numbered external water-leakage plug-in segmented water-collecting devices with the reserved bolt holes of the installed external water-leakage plug-in segmented water-collecting devices, and fix them to the secondary lining of the tunnel through expansion bolts;

[0010] Step 4: Use waterproof sealant to seal the overlapping parts of the leaking external segmented water collection device and the joints between the leaking external segmented water collection device and the secondary lining of the tunnel.

[0011] Furthermore, the leaking external segmented water collection device includes a bottom plate, side plates, ear plates, waterproof sealant and waterproof rubber gaskets. The side plates are welded to the two lateral edges of the bottom plate, the ear plates are arranged on the upper edges of the side plates and are distributed laterally outward, the waterproof sealant is arranged on the inner side of the connection between the bottom plate and the side plates and on the outer side of the connection between the side plates and the ear plates, the bolt holes are arranged on the ear plates, and the waterproof rubber gaskets are arranged at the bolt holes.

[0012] Furthermore, the lateral side edge of the bottom plate abuts against the lower portion of one side surface of the side plate, and the lateral side edge of the ear plate abuts against the upper portion of the other side surface of the side plate.

[0013] Furthermore, the installation method of the water seepage built-in water receiving device comprises the following steps:

[0014] Step 1: Mark the seepage location of the tunnel secondary lining, clean the concrete surface around the construction site, and mark the concentrated seepage points;

[0015] Step 2: Cut an inverted trapezoidal groove at the seepage position on the upper edge of the tunnel secondary lining. The length of the groove extends above the crack without water seepage and down to the cable trough;

[0016] Step 3: Drill a water diversion hole at the concentrated water seepage point with a handheld puncher, the depth of the water diversion hole being no greater than the thickness of the secondary lining of the tunnel;

[0017] Step 4: Install the built-in water collection device for seepage along the center line of the groove.

[0018] Furthermore, the built-in water collection device for water seepage includes a semicircular pipe, an aluminum alloy pipe clamp, steel nails, an expansion water stop strip, a leak-proof material and a polymer cement mortar. The semicircular pipe is fitted with the inner wall of the groove, the aluminum alloy pipe clamp clamps the semicircular pipe, the steel nails fix the two sides of the aluminum alloy pipe clamp in the groove, the expansion water stop strip seals the groove and the semicircular pipe along both sides of the semicircular pipe, the leak-proof material covers the semicircular pipe, and the polymer cement mortar fills the groove.

[0019] By adopting the above technical solution, the beneficial effects of the present invention are:

[0020] 1) The installation method of the secondary lining leakage water collection device of this tunnel is to combine the leakage external hanging water collection device and the seepage internal water collection device. The leakage external hanging water collection device is used at the arch leakage, and the seepage internal water collection device is used at the small range of seepage on the side wall. This method solves the limitation of using a single treatment method, ensures the aesthetics of the tunnel, speeds up the construction progress, enables the highway to be quickly restored to traffic, and can be applied to tunnels of various cross-sectional sizes.

[0021] 2) The leaking external water receiving device is cut into sections, and then the water receiving device is split into a bottom plate, a side plate, and an ear plate. The bottom plate, the side plate, and the ear plate are bent according to the contour curve radius of different tunnels. The section processing can be completed in the factory and then installed on site, which provides conditions for the bending processing and installation of the water receiving device. By hanging the water receiving device on the secondary lining of the tunnel, the construction time of grooving and burying pipes can be reduced. This method also solves the problem that the semi-circular pipe of the stainless steel water receiving box is difficult to bend, process and install, and reduces the damage to the secondary lining steel bars and concrete, which can greatly save the construction period and speed up the construction progress. It is of great help to the treatment of water leakage in tunnels that have been opened to traffic and has a good application scenario. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the leaking external water receiving device divided into sections with equal arc lengths according to an embodiment of the present invention;

[0023] Figure 2 It is a schematic cross-sectional view of the structure of the leaking external segmented water receiving device in an embodiment of the present invention;

[0024] Figure 3 2 is a schematic diagram of the top view of the structure of the leaking external segmented water receiving device in an embodiment of the present invention;

[0025] Figure 4 is a schematic cross-sectional structural diagram of a tunnel secondary lining in a state where a built-in water seepage device is not installed in an embodiment of the present invention;

[0026] Figure 5 It is a front view structural schematic diagram of the secondary lining of the tunnel in a state where the built-in water seepage device is not installed in an embodiment of the present invention;

[0027] Figure 6 It is a schematic cross-sectional view of the structure of the built-in water seepage device in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0029] The embodiments of the present invention are:

[0030] refer to Figures 1 to 6As shown, a method for installing a water collection device for leakage water of a tunnel secondary lining is provided, wherein the water collection device comprises a leakage external hanging water collection device 1 and a leakage internal water collection device 2. When the tunnel secondary lining a leaks, the leakage external hanging water collection device 1 is installed at the leakage location of the tunnel secondary lining a; when the tunnel secondary lining a leaks, the leakage internal water collection device 2 is installed at the leakage location of the tunnel secondary lining a;

[0031] The installation method of the leaking external water receiving device 1 comprises the following steps:

[0032] Step 1: Take a vehicle-mounted aerial platform to the tunnel vault, knock off the loose concrete, and reinforce the concrete within the crack range with wire mesh;

[0033] Step 2: Determine the width of the external water receiving device 1 according to the leakage range and leakage amount, and then divide it according to the inner contour of the tunnel second lining a according to equal arc length to form multiple leakage external segmented water receiving devices 10, and number them in sequence;

[0034] Step 3: Align the corresponding numbered leaking external plug-in segmented water receiving devices 10 according to the center line b of the vault at the tunnel vault, extend the leaking external plug-in segmented water receiving devices 10 to both ends of the length, and install the leaking external plug-in segmented water receiving devices 10 in sequence according to the numbering sequence, using overlapping connections, align the adjacent numbered leaking external plug-in segmented water receiving devices 10 with the reserved bolt holes 106 of the installed leaking external plug-in segmented water receiving devices 10, and fix them on the tunnel secondary lining a through expansion bolts 3;

[0035] Step 4: Use waterproof sealant to seal the overlapping parts of the leaking external hanging segmented water collection device 10 and the joint parts between the leaking external hanging water collection device 1 and the second lining a of the tunnel.

[0036] Specifically, the leaking external segmented water receiving device 10 includes a bottom plate 101, a side plate 102, an ear plate 103, a waterproof sealant 104 and a waterproof rubber gasket 105. The side plate 102 is welded to the lateral edges of the bottom plate 101. The ear plate 103 is arranged on the upper edge of the side plate 102 and is distributed laterally outward. The waterproof sealant 104 is arranged on the inner side of the connection between the bottom plate 101 and the side plate 102 and the side plate 102 and the ear plate 103. On the outside of the connection, the bolt hole 106 is provided on the ear plate 103, and the waterproof rubber gasket 105 is provided at the bolt hole 106, so that the leaking external plug-in segmented water collecting device 10 is easy to install, and the lateral side edge of the bottom plate 101 abuts against the lower part of one side of the side plate 102, and the lateral side edge of the ear plate 103 abuts against the upper part of the other side of the side plate 102, thereby improving the leak-proof effect of the leaking external plug-in segmented water collecting device 10.

[0037] The installation method of the tunnel secondary lining leakage water receiving device is to combine the leakage external hanging water receiving device 1 and the seepage internal water receiving device 2, the leakage external hanging water receiving device 1 is used at the arch leakage, and the seepage internal water receiving device 2 is used at the small range of seepage on the side wall. Through this method, the limitation of using a single treatment method is solved, the aesthetics of the tunnel is ensured, the construction progress is accelerated, the highway can be quickly restored to traffic, and it can be applied to tunnels of various cross-sectional sizes; the leakage external hanging water receiving device 1 is cut into sections, and then the water receiving device is split into a bottom plate 101, a side plate 102, and an ear plate 103, and the bottom plate 101 is connected to the side plate 102. The plate 101, the side plate 102 and the ear plate 103 are bent according to the contour curve radius of different tunnels. The segmented processing can be completed in the factory and then installed on site, which provides conditions for the bending processing and installation of the water receiving device. By hanging the water receiving device on the secondary lining a of the tunnel, the construction time of grooving and pipe burying can be reduced. Through this method, the problem that the semi-circular pipe of the stainless steel water receiving box is difficult to bend, process and install is solved, and the damage to the secondary lining steel bars and concrete is reduced, which can greatly save the construction period and speed up the construction progress. It is of great help to the treatment of water leakage in the tunnel that has been opened to traffic and has a good application scenario.

[0038] Furthermore, the installation method of the seepage built-in water receiving device 2 comprises the following steps:

[0039] Step 1: Mark the seepage position c of the tunnel secondary lining a, clean the concrete surface around the construction site, and mark the concentrated seepage point d;

[0040] Step 2: cutting an inverted trapezoidal groove 4 at the water seepage position c on the upper edge of the tunnel secondary lining a, the length of the groove 4 extending above the non-water seepage crack and downward to the cable trough;

[0041] Step 3: Drill a water diversion hole 5 at the concentrated water seepage point d with a handheld puncher, the depth of the water diversion hole 5 being no greater than the thickness of the secondary lining a of the tunnel;

[0042] Step 4: Install the seepage built-in water receiving device 2 along the center line of the groove 4.

[0043] Specifically, the built-in water collection device 2 for water seepage includes a semicircular pipe 21, an aluminum alloy pipe clamp 22, a steel nail 23, an expansion water stop strip 24, a plugging material 25 and a polymer cement mortar 26. The semicircular pipe 21 is fitted with the inner wall of the groove 4, the aluminum alloy pipe clamp 22 clamps the semicircular pipe 21, the steel nail 23 fixes the two sides of the aluminum alloy pipe clamp 22 in the groove 4, the expansion water stop strip 24 blocks the groove 4 and the semicircular pipe 21 along both sides of the semicircular pipe 21, the plugging material 25 covers the semicircular pipe 21, and the polymer cement mortar 26 fills the groove 4.

[0044] It can effectively guide the water flow at the seepage point of the tunnel, reduce the corrosion effect of the seepage on the tunnel secondary lining a on the concrete, and avoid the seepage dripping onto the tunnel pavement to cause traffic safety accidents. At the same time, the diversion equipment does not damage the appearance of the tunnel secondary lining a and does not invade the tunnel driving limit.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A method for installing a water collection device for secondary lining leakage in a tunnel, characterized in that: The water receiving device includes a leakage external water receiving device and a seepage internal water receiving device. When the second lining of the tunnel leaks, the leakage external water receiving device is installed at the leakage location of the second lining of the tunnel; when the second lining of the tunnel seeps, the seepage internal water receiving device is installed at the seepage location of the second lining of the tunnel; The installation method of the leaking external water receiving device comprises the following steps: Step 1: Take a vehicle-mounted aerial platform to the tunnel vault, knock off the loose concrete, and reinforce the concrete within the crack range with wire mesh; Step 2: Determine the width of the external water connection device according to the scope and amount of water leakage, and then divide it into equal arc lengths according to the inner contour of the second lining of the tunnel to form multiple leakage external segmented water connection devices, and number them in sequence; Step 3: Align the corresponding numbered external water-leakage plug-in segmented water-collecting devices at the tunnel vault along the center line of the vault, extend the external water-leakage plug-in segmented water-collecting devices to both ends of the length, and install the external water-leakage plug-in segmented water-collecting devices in sequence according to the numbering sequence, using overlapping connections, align the adjacent numbered external water-leakage plug-in segmented water-collecting devices with the reserved bolt holes of the installed external water-leakage plug-in segmented water-collecting devices, and fix them to the secondary lining of the tunnel through expansion bolts; Step 4: Use waterproof sealant to seal the overlapping parts of the leaking external segmented water collection device and the joints between the leaking external segmented water collection device and the secondary lining of the tunnel.

2. The installation method of the tunnel secondary lining leakage water collection device according to claim 1 is characterized by: The leaking external segmented water collection device includes a bottom plate, side plates, ear plates, waterproof sealant and waterproof rubber gaskets. The side plates are welded to the two lateral edges of the bottom plate. The ear plates are arranged on the upper edges of the side plates and are distributed laterally outward. The waterproof sealant is arranged on the inner side of the connection between the bottom plate and the side plates and on the outer side of the connection between the side plates and the ear plates. The bolt holes are arranged on the ear plates, and the waterproof rubber gaskets are arranged at the bolt holes.

3. The installation method of the tunnel secondary lining leakage water collection device according to claim 2 is characterized by: The transverse side edge of the bottom plate abuts against the lower part of one side of the side plate, and the transverse side edge of the ear plate abuts against the upper part of the other side of the side plate.

4. The method for installing the tunnel secondary lining leakage water collection device according to any one of claims 1 to 3, characterized in that: The installation method of the water seepage built-in water receiving device comprises the following steps: Step 1: Mark the seepage location of the tunnel secondary lining, clean the concrete surface around the construction site, and mark the concentrated seepage points; Step 2: Cut an inverted trapezoidal groove at the seepage position on the upper edge of the tunnel secondary lining. The length of the groove extends above the crack without water seepage and down to the cable trough; Step 3: Drill a water diversion hole at the concentrated water seepage point with a handheld puncher, the depth of the water diversion hole being no greater than the thickness of the secondary lining of the tunnel; Step 4: Install the built-in water collection device for seepage along the center line of the groove.

5. The installation method of the tunnel secondary lining leakage water collection device according to claim 4 is characterized by: The built-in water collection device for water seepage includes a semicircular pipe, an aluminum alloy pipe clamp, steel nails, an expansion water stop strip, a leak-proof material and a polymer cement mortar. The semicircular pipe is fitted with the inner wall of the groove, the aluminum alloy pipe clamp clamps the semicircular pipe, the steel nails fix the two sides of the aluminum alloy pipe clamp in the groove, the expansion water stop strip seals the groove and the semicircular pipe along both sides of the semicircular pipe, the leak-proof material covers the semicircular pipe, and the polymer cement mortar fills the groove.

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