CN219197361U - Cold region operation tunnel lining infiltration punishment structure - Google Patents

Abstract

The utility model relates to the field of tunnel lining water seepage protection, in particular to a tunnel lining water seepage treatment structure for a cold region operation tunnel. The damage of freezing injury and water seepage to the tunnel structure is solved. The lining seepage treatment structure comprises a waterproof heat-insulation combination, a water drain hole and a heat-insulation drain pipe combination; the waterproof heat-insulating combination comprises a non-woven fabric waterproof board combination, light steel rails and an anti-freezing heat-insulating board, wherein the non-woven fabric waterproof board combination is fixed on the surface of a secondary lining, the light steel rails are arranged on the secondary lining, and the anti-freezing heat-insulating board is fixedly installed through the light steel rails; the water discharge hole is communicated with the heat-preserving drain pipe in a combined way; the heat preservation drain pipe combination includes vertical heat preservation drain pipe and horizontal heat preservation drain pipe, and vertical heat preservation drain pipe lays along the tunnel, and vertical heat preservation drain pipe is vertically linked through to horizontal heat preservation drain pipe one end, and the other end communicates central escape canal. The structure reduces or eliminates the damage of the freezing injury to the tunnel structure by organically combining water resistance, water drainage and heat preservation, and ensures the operation safety of the tunnel.

Description

Cold region operation tunnel lining infiltration punishment structure

Technical Field

The utility model relates to the field of tunnel lining water seepage protection, in particular to a tunnel lining water seepage treatment structure for a cold region operation tunnel.

Background

Compared with other infrastructures such as bridges and roadbeds, tunnel engineering is more sensitive to temperature environments, and particularly, the problem that tunnel freezing injury is serious when frequent water leakage diseases occur in a negative temperature environment is caused. In the seasonal freeze thawing process, physical and mechanical processes such as water migration, ice water phase change, freezing expansion and the like can cause a series of serious freeze injury problems such as ice hanging in a tunnel hole, road surface icing, failure of a drainage system, lining cracking, road surface frost heaving and thawing and the like. In recent years, the construction task of highway tunnel engineering in cold areas of China is heavy, and the problem of serious freeze injury occurs in part of tunnels.

The root cause of tunnel freeze injury is mainly from repeated freeze thawing of water in lining structures and rock formations. Therefore, the prevention and treatment of the freezing injury of the tunnel mainly aims at preventing and treating water and freezing. Engineering practice and theoretical analysis prove that if groundwater in surrounding rock on the back of the lining can be removed, the freezing injury of the tunnel is greatly reduced or even eliminated. In the process of discharging the tunnel groundwater, the heat of the groundwater is gradually lost, if the air temperature is too low, a freezing phenomenon can occur, a drainage system is not smooth, the water pressure on the back of the tunnel lining is increased, and the lining is leaked and frost heaving is damaged. Therefore, in the process of preventing and controlling the freezing injury of the tunnel, the waterproof is the foundation, the drainage is the core, the heat preservation is the key, and the three are required to be organically combined. Existing treatment measures include: the crack reinforcement design and the drainage method for reducing the underground water level are adopted for the water seepage part by adopting a surface water interception method, a water guide method, a water blocking method and a water drainage method. However, various treatment measures do not organically combine water resistance, water drainage and heat preservation, and damage of freezing injury to a tunnel structure cannot be reduced or eliminated.

Disclosure of Invention

The utility model provides a lining water seepage treatment structure for a tunnel operated in a cold region, which effectively solves the problem of damage to the tunnel structure caused by freezing injury and water seepage.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

cold district operation tunnel lining infiltration punishment structure, whole structure installation is in filling layer 4 on secondary brickwork 2 and invert 3, its characterized in that: the lining seepage treatment structure comprises a waterproof heat-insulation combination, a water drain hole 11 and a heat-insulation drain pipe combination;

the waterproof heat-insulating combination comprises a non-woven fabric waterproof board combination 8, light steel rails 9 and an anti-freezing heat-insulating board 10, wherein the non-woven fabric waterproof board combination 8 is fixed on the surface of the secondary lining 2, the light steel rails 9 are arranged on the secondary lining 2, and the anti-freezing heat-insulating board 10 is fixedly installed through the light steel rails 9;

the water discharge hole 11 is communicated with the heat-preserving drain pipe in a combined way;

the heat preservation drain pipe combination includes vertical heat preservation drain pipe 12 and horizontal heat preservation drain pipe 13, and vertical heat preservation drain pipe 12 is laid along the tunnel, and vertical heat preservation drain pipe 12 is vertically linked through to horizontal heat preservation drain pipe 13 one end, and the other end communicates central escape canal 5.

The non-woven fabric waterproof board combination 8 is paved on the full section of the surface of the secondary lining 2 to form a flexible waterproof layer.

The light steel rails 9 are arranged at fixed intervals along the longitudinal direction of the tunnel.

The two ends of the light steel rail 9 are located on the ground of the overhaul channel 7, and are fixed with the ground by adopting a connecting backing plate 14 and an anchor bolt 15.

Longitudinal connecting ribs are arranged among 9 light steel rails, and each light steel rail section is connected by adopting a connecting backing plate 14 and a connecting bolt 16.

The drain hole 11 is arranged in a tilting type drain way and forms an included angle of 10-15 degrees with the horizontal direction.

The beneficial effects of the utility model are as follows: adopt this lining cutting infiltration treatment structure, can make lining cutting infiltration arrange away the tunnel along unobstructed water route to should prevent that the water route from freezing, simple structure, strong operability, simple installation.

The lining water seepage treatment structure organically combines water resistance, drainage and heat preservation, reduces or eliminates the damage of freezing injury to a tunnel structure, and has important significance for tunnel operation safety.

Drawings

FIG. 1 is a diagram showing a construction of a tunnel lining seepage treatment structure in a cold region;

FIG. 2 is a cross-sectional view of a water seepage treatment structure of the present utility model;

FIG. 3 is a schematic diagram of a large sample of a water seepage treatment arch leg according to the present utility model;

FIG. 4 is a schematic view of a light rail joint of the present utility model;

FIG. 5 is a construction view of a connecting pad of the present utility model;

fig. 6 is a detailed view of the installation of the insulation board.

The figure shows: the anti-freezing waterproof composite floor comprises an primary support 1, a secondary lining 2, an inverted arch 3, a filling layer 4, a central drainage ditch 5, an inspection well 6, an inspection channel 7, a non-woven fabric waterproof composite 8, a light steel rail 9, an anti-freezing heat insulation plate 10, a water drain hole 11, a longitudinal heat insulation drain pipe 12, a transverse heat insulation drain pipe 13, a connecting base plate 14, foundation bolts 15 and connecting bolts 16.

Detailed Description

The technical scheme of the utility model is further described below by specific embodiments with reference to the accompanying drawings:

example 1

As shown in fig. 1, a construction for treating water seepage of a lining of a tunnel operated in a cold region is composed of a water discharge hole 11, a waterproof heat-insulating combination and a heat-insulating drain pipe combination.

As shown in fig. 1, the water drain hole 11 is a upward inclined water drain hole which is punched at about 50cm above the bottom surface of the tank body of the access way 7, the aperture of the water drain hole is controlled to be 50mm, the included angle between the water drain hole and the horizontal direction is 10-15 degrees, the hole depth is preferably deep into about 50cm of surrounding rock, and the longitudinal average distance along the arch springing is 1m. The outlet of the water discharge hole 11 is connected with a water diversion pipe, the water diversion pipe and the wall of the water discharge hole 11 are sealed by reliable sealing materials, the outside seepage of the surface water is prevented, and the water diversion pipe is connected with a longitudinal heat-preserving drain pipe 12 through a tee joint.

As shown in fig. 1, 2 and 3, a non-woven fabric 8 is formed by paving a non-woven fabric with the total section of the surface of the secondary lining and an EVA waterproof board with the thickness of 1.2mm, so that the water leakage on the surface of the primary lining 2 of the tunnel is gathered in a longitudinal heat-preserving drain pipe 12, and the water is led into a nearby inspection well 6 through a transverse heat-preserving drain pipe 13.

As shown in fig. 1, 2 and 3, 9kg/m light steel rails 9 are erected as a framework, the longitudinal distance is 1m, arch feet of the light steel rails 9 are located on the ground of the groove body of the overhaul channel 7, and the light steel rails 9 are reliably fixed with the existing concrete foundation by adopting connecting backing plates 14 and anchor bolts 15. As shown in fig. 3 and 4, longitudinal connecting ribs are arranged between 9 light steel rails, and each light steel rail section is connected by adopting a connecting base plate 14 and a connecting bolt 16, so that the overall stability is ensured. Each connecting backing plate is provided with 4 bolt holes 17, and the connecting bolts between the two connecting backing plates 14 are screwed and aligned.

As shown in fig. 1, 2 and 6, the anti-freezing and heat-insulating layer 10 consists of 50mm thermosetting heat-insulating material and 6mm fiber reinforced plate, and is laid in a light rail framework in a assistance manner to prevent the drainage system from freezing and losing efficacy in winter. The keels for fixing the antifreezing heat insulation layer can be firmly fixed on the existing light rail 9 framework by adopting auxiliary materials, and the perforation and fixation are forbidden to destroy the laid composite waterproof board.

As shown in fig. 1, 2 and 3, a longitudinal heat-preserving drain pipe 12 is arranged on the outer side of the arch foot of the light steel rail 9, the longitudinal heat-preserving drain pipe 12 is made of a phi 160mm double-wall perforated corrugated pipe, and the corrugated pipe is wrapped with an antifreezing material. The non-woven fabric waterproof combination 8 is wrapped with a corrugated pipe and extends upwards for about 50cm, so that water collected in the water drain hole 11 can smoothly enter the longitudinal heat-preserving drain pipe 12, and the water collected is prevented from being discharged into the cable duct at will. If the vertical heat preservation drain pipe 12 is newly arranged and has no placing space, the existing secondary lining 2 can be properly chiseled. When the longitudinal heat-preservation drain pipe is installed, the semicircular punching side is vertical upwards. And a transverse heat-preserving drain pipe 13 is buried in the filling layer 4 and the pavement transverse pull groove at the position of the existing central ditch inspection well 6 nearby. The transverse heat-preservation drain pipe is made of a phi 160mm stainless steel pipe, the stainless steel pipe is wrapped with an antifreezing material, the antifreezing material is smoothly connected with a phi 160mm longitudinal double-wall upper semicircular perforated corrugated pipe through a tee joint, and water is uniformly discharged to the existing central drain ditch 5 of the tunnel and the road surface is restored.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (6)

1. Cold district operation tunnel lining infiltration punishment structure, whole structure installation in the filling layer on secondary lining and invert, its characterized in that: the lining seepage treatment structure comprises a waterproof heat-insulation combination, a water drain hole and a heat-insulation drain pipe combination;

the waterproof heat-insulating combination comprises a non-woven fabric waterproof board combination, light steel rails and an anti-freezing heat-insulating board, wherein the non-woven fabric waterproof board combination is fixed on the surface of a secondary lining, the light steel rails are arranged on the secondary lining, and the anti-freezing heat-insulating board is fixedly installed through the light steel rails;

the water discharge hole is communicated with the heat-preserving drain pipe in a combined way;

the heat preservation drain pipe combination includes vertical heat preservation drain pipe and horizontal heat preservation drain pipe, and vertical heat preservation drain pipe lays along the tunnel, and vertical heat preservation drain pipe of vertical intercommunication is crossed to horizontal heat preservation drain pipe one end, and the other end communicates central escape canal.

2. The cold region operation tunnel lining infiltration treatment structure according to claim 1, wherein: the non-woven fabric waterproof board is combined and laid on the full section of the secondary lining surface to form a flexible waterproof layer.

3. The cold region operation tunnel lining infiltration treatment structure according to claim 1, wherein: the light steel rails are longitudinally arranged at fixed intervals along the tunnel.

4. The cold region operation tunnel lining infiltration treatment structure according to claim 1, wherein: the two ends of the light steel rail are located on the ground of the overhaul channel and are fixed with the ground by adopting a connecting base plate and foundation bolts.

5. The cold region operation tunnel lining infiltration treatment structure according to claim 1, wherein: longitudinal connecting ribs are arranged between the light steel rail truss sections, and each light steel rail truss section is connected by adopting a connecting backing plate and a connecting bolt.

6. The cold region operation tunnel lining infiltration treatment structure according to claim 1, wherein: the drain Kong Caiyong is arranged obliquely in a draining way and forms an included angle of 10-15 degrees with the horizontal direction.

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