CN204476470U - A kind of waterproof and water drainage system of applicable tunnel project seam - Google Patents

Abstract

The utility model belongs to a waterproof and drainage system suitable for tunnel engineering joints. The waterproof and drainage system includes an Ω-type drainable waterstop, an ordinary waterstop, a grit chamber, a longitudinal drainage ditch, and a slurry filter; the Ω-type drainable waterstop and the ordinary waterstop are both It is laid along the arch of the tunnel, and the two are arranged on the engineering joints of the second lining in turn from the outside of the tunnel; the opening of the Ω pipe of the Ω-shaped drainable waterstop faces the side of the surrounding rock, and a slurry filter is laid at the opening. The water belt; the grit chamber and the longitudinal drainage ditch are located at the bottom of the cable channel of the tunnel; the Ω-type drainable water stop and the common water stop converge in the grit chamber. Compared with the prior art, the waterproof and drainage system suitable for tunnel engineering joints described in the utility model reduces the chance of water leakage, improves the reliability and maintainability of the waterstop, and can effectively prevent frost heave blockage failure, Moreover, the setting of the caisson pool can facilitate dredging, maintenance and inspection in the later stage, and the drainage effect is good.

Description

A Waterproof and Drainage System Suitable for Tunnel Engineering Joints

technical field

The utility model belongs to the technical field of tunnel and underground engineering waterproofing, in particular to a waterproofing and drainage system suitable for tunnel engineering joints.

Background technique

With the great-leap-forward development of my country's transportation industry, more and more tunnel projects have been repaired, and more and more tunnels have been repaired. However, the problem of tunnel damage is becoming more and more prominent, especially the water leakage from the "three cracks". The so-called "ten tunnels and nine leaks" just reflect the frequent water damage. Water leakage disease not only affects the normal use and life of the electromechanical equipment in the tunnel, causes the tunnel lining to crack or fall off, threatens the safety of driving in the tunnel, but also shortens the maintenance cycle and service life of the highway tunnel, and it is difficult to completely cure it. The construction industry is called the No. 1 stubborn disease of tunnel engineering.

Although many mountain tunnels built in recent years have been equipped with special waterproof layers, there are still many tunnels that leak to varying degrees shortly after they are built. Due to the damage and blockage of various reasons in the construction and operation of the tunnel waterproof system, the seepage water will pass through the waterproof layer, making the concrete lining the key to the waterproofing of the entire tunnel project. At present, the "three-slit" waterproof general sheet has the problems of poor drainage and insufficient density around the waterstop and expanded rubber strips.

Contents of the invention

In order to solve the above technical problems, the utility model provides a waterproof and drainage system suitable for tunnel engineering joints with simple structure, convenient operation and strong maintainability.

A waterproof and drainage system suitable for tunnel engineering joints described in the utility model, the waterproof and drainage system includes an Ω-type drainable waterstop 1, an ordinary waterstop 2, a grit chamber 3, a longitudinal drainage ditch 4, a waterstop Slurry filter water belt 5, thermal insulation layer 6 and reserved grouting hole 7; the Ω-type drainable water stop belt 1 and ordinary water stop belt 2 are laid along the arch of the tunnel, and the two are arranged from the outside of the tunnel to the inside in turn On the engineering joint of the second lining; the Ω pipe opening of the Ω-type drainable waterstop 1 is facing the surrounding rock side, and a slurry filter water belt 5 is laid at the opening; the grit chamber 3, the longitudinal drainage ditch 4 is located at the bottom of the cable channel of the tunnel; the Ω-type drainable waterstop 1 and the common waterstop 2 converge in the grit chamber 3 .

The utility model relates to a waterproof and drainage system suitable for tunnel engineering joints. The waterproof and drainage system includes an insulating layer 6 laid along the tunnel engineering joints, and the insulating layer 6 is provided with reserved grouting holes 7 .

The utility model relates to a waterproof and drainage system suitable for tunnel engineering joints. The common waterstop 2 is laid at the reserved grouting holes 7 of the engineering joints.

The utility model relates to a waterproof and drainage system suitable for tunnel engineering joints. The Ω-shaped drainable waterstop 1 is a common ribbed detour waterstop pasted on both sides of the Ω-shaped spring drain pipe.

A waterproof and drainage system suitable for tunnel engineering joints described in the utility model, the Ω-type drainable waterstop 1 is coated with Sinochem HK-798, a high-permeability epoxy resin waterproof material, at the pasting place.

According to the waterproof and drainage system suitable for tunnel engineering joints described in the utility model, the grit chamber 3 is arranged on the side of the cable trough close to the longitudinal drainage ditch 4 .

A waterproof and drainage system suitable for tunnel engineering joints described in the utility model, the Ω-type drainable waterstop 1 is set at (1/3)-(1/2) of the thickness of the second lining close to the direction of the primary lining .

According to the waterproof and drainage system suitable for tunnel engineering joints described in the utility model, the common waterstop 2 is arranged at (1/2)-(2/3) of the thickness of the second lining close to the direction of the primary lining.

Compared with the prior art, the waterproof and drainage system suitable for tunnel engineering joints described in the utility model has the following advantages and effects: the waterstop is endowed with a drainage function, and the seepage water at the waterstop is effectively reduced after being drained first and then blocked. The pressure reduces the chance of water leakage; the setting of no joint in the middle of the Ω-shaped pipe improves the reliability of the water stop; the double water stop and the reserved grouting hole improve the reliability and maintainability of the water stop; drainage The setting of the insulation layer in the system can effectively prevent frost heaving and blockage failure, and if necessary, electric heating wire can be inserted to heat and dredge; the drainage system path is smooth and not easy to block, and the setting of caisson pool can facilitate later dredging and maintenance inspection, and the drainage effect is good.

Description of drawings

Figure 1: Front view of the structure of the waterproof and drainage system; Figure 2: Top view of the structure of the waterproof and drainage system; Figure 3: Schematic diagram of the Ω-type drainable waterstop; 1-Ω-type drainable waterstop, 2-ordinary waterstop, 3- grit chamber, 4- thermal insulation drainage ditch, 5- grout stop filter belt, 6- thermal insulation layer, 7- reserved grouting hole.

Detailed ways

The waterproof and drainage system suitable for tunnel engineering joints described in the present invention will be further described below in conjunction with specific embodiments, but the protection scope of the present invention is not limited thereto.

Example 1

A waterproof and drainage system suitable for tunnel engineering joints, the waterproof and drainage system includes Ω-type drainable waterstop 1, ordinary waterstop 2, grit chamber 3, longitudinal drainage ditch 4, slurry filter waterstop 5, The thermal insulation layer 6 and the reserved grouting hole 7; the Ω-type drainable waterstop 1 and the ordinary waterstop 2 are laid along the arch of the tunnel, and the two are arranged in the engineering joint of the second lining from the outside of the tunnel inward. Above; the opening of the Ω pipe of the Ω-type drainable waterstop 1 is facing the side of the surrounding rock, and a slurry-stop filter waterbelt 5 is laid on the opening; the grit chamber 3 and the longitudinal drainage ditch 4 are located in the cable trough of the tunnel Bottom; the Ω-type drainable waterstop 1 and the common waterstop 2 converge in the grit chamber 3; the Ω-type drainable waterstop 1 is set at the thickness of the second lining close to the direction of the primary lining (1/ 3)-(1/2); the common waterstop 2 is set at (1/2)-(2/3) of the thickness of the second lining close to the direction of the primary lining.

Example 2

A waterproof and drainage system suitable for tunnel engineering joints, said waterproof and drainage system includes Ω-type drainable waterstop 1, ordinary waterstop 2, grit chamber 3, longitudinal drainage ditch 4, slurry filter waterstop 5, The thermal insulation layer 6 and the reserved grouting hole 7; the Ω-type drainable waterstop 1 and the ordinary waterstop 2 are laid along the arch of the tunnel, and the two are arranged in the engineering joint of the second lining from the outside of the tunnel inward. Above; the opening of the Ω pipe of the Ω-type drainable waterstop 1 is facing the side of the surrounding rock, and a slurry-stop filter waterbelt 5 is laid on the opening; the grit chamber 3 and the longitudinal drainage ditch 4 are located in the cable trough of the tunnel Bottom; the Ω-type drainable waterstop 1 and the common waterstop 2 converge in the grit chamber 3; the waterproof and drainage system includes an insulation layer 6 laid along the tunnel engineering joints to protect the Ω-type drainable Type waterstop 1 and ordinary waterstop 2, the insulation layer 6 is provided with a reserved grouting hole 7; the ordinary waterstop 2 is laid at the reserved grouting hole 7 of the engineering joint; the Ω-type The drainable waterstop 1 is pasted on both sides of the Ω-shaped spring drain pipe on the ordinary ribbed bypass waterstop; the Ω-type drainable waterstop 1 is coated with high-permeability epoxy resin waterproof material at the pasting place Sinochem HK-798; the grit chamber 3 is arranged on the side of the cable trough close to the longitudinal drainage ditch 4; the Ω-type drainable waterstop 1 is arranged on (1/3) of the thickness of the second lining close to the direction of the primary lining -(1/2); the common waterstop 2 is set at (1/2)-(2/3) of the thickness of the second lining close to the direction of the primary lining.

Construction process: After the excavation of the tunnel is completed, the initial support is carried out according to the conventional method, including steel mesh, anchor rod, steel arch frame, and the initial lining shotcrete is applied at the same time; after the base surface treatment of the initial lining concrete, the conventional method is used Apply as a cold-proof insulation layer; when pouring one side of the second-lining mold-concrete, reserve an anti-Ω groove at its edge close to the thickness of about 1/3 of the primary lining direction. After the pouring is completed, place the Ω-shaped spring drain pipe In the groove of the second-lined molded concrete, both sides of the Ω-shaped spring drainage pipe Ω head are hot-melted and pasted with the ordinary ribbed bypass waterstop, and the high-permeability epoxy resin waterproof material Sinochem HK-798 is used for bonding in some places The slurry filter water-stop is laid at the opening, and it is integrated with the water-stop, and the water-stop is laid toward the inner side of the tunnel with thermal insulation material; the ordinary water-stop 2 is installed at about 2/3 of the thickness close to the direction of the primary lining, and the ordinary water-stop The construction technology of the water belt 2 and the reserved grouting hole shall be constructed according to the road tunnel specification. The lower end of the waterstop and waterstop 4 is connected to the grit chamber at the bottom of the tunnel cable trench; the concrete molding construction of the second lining molding on the other side of the tunnel engineering joint is carried out; the grit is reserved at the bottom when pouring the cable trough Pond and thermal insulation longitudinal drainage gutter structures.

Compared with the prior art, the waterproof and drainage system suitable for tunnel engineering joints described in the utility model has the following advantages and effects: the waterstop is endowed with a drainage function, and the seepage water at the waterstop is effectively reduced after being drained first and then blocked. The pressure reduces the chance of water leakage; the setting of no joint in the middle of the Ω-shaped pipe improves the reliability of the water stop; the double water stop and the reserved grouting hole improve the reliability and maintainability of the water stop; drainage The setting of the insulation layer in the system can effectively prevent frost heaving and blockage failure, and if necessary, electric heating wire can be inserted to heat and dredge; the drainage system path is smooth and not easy to block, and the setting of caisson pool can facilitate later dredging and maintenance inspection, and the drainage effect is good.

Claims (8)

1. A waterproof and drainage system suitable for tunnel engineering joints, characterized in that, the waterproof and drainage system comprises Ω-type drainable waterstops (1), common waterstops (2), grit chambers (3), Longitudinal drainage ditch (4) and grout-stop water-stop (5); the Ω-type drainable water-stop (1) and common water-stop (2) are laid along the arch of the tunnel, and the two are followed by the tunnel It is arranged on the engineering joint of the second lining from outside to inside; the Ω pipe opening of the Ω-type drainable waterstop (1) is facing the surrounding rock side, and a slurry filter waterstop (5) is laid on the opening; the sinking The sand tank (3) and the longitudinal drainage ditch (4) are located at the bottom of the cable channel of the tunnel; the Ω-shaped drainable water stop (1) and the common water stop (2) converge in the grit chamber (3). 2. A kind of waterproof and drainage system suitable for tunnel engineering joints according to claim 1, characterized in that, said waterproof and drainage system comprises an insulating layer (6) laid along the tunnel engineering joints, on which the insulating layer (6) A reserved grouting hole (7) is provided. 3. A waterproof and drainage system suitable for tunnel engineering joints according to claim 2, characterized in that, the common waterstop (2) is laid at the reserved grouting holes (7) of the engineering joints. 4. A waterproof and drainage system suitable for tunnel engineering joints according to claim 1, characterized in that, the Ω-shaped drainable waterstop (1) is pasted on the Ω-shaped waterstop with ribs on the ordinary detour waterstop Spring drain on both sides. 5. A kind of waterproof and drainage system suitable for tunnel engineering joints according to claim 4, characterized in that, the Ω-type drainable waterstop (1) is coated with high-permeability epoxy resin waterproof material at the pasting place Sinochem HK-798. 6. A waterproof and drainage system suitable for tunnel engineering joints according to claim 1, characterized in that the grit chamber (3) is arranged on the side of the cable trough close to the longitudinal drainage ditch (4). 7. A waterproof and drainage system suitable for tunnel engineering joints according to claim 1, characterized in that the Ω-shaped drainable waterstop (1) is set at 1/3 of the thickness of the second lining close to the direction of the primary lining -1/2 place. 8. A waterproof and drainage system suitable for tunnel engineering joints according to claim 1, characterized in that the common waterstop (2) is set at 1/2-2/3 of the thickness of the second lining close to the direction of the primary lining place.