CN216894531U - Tunnel drainage protection system - Google Patents

Abstract

The utility model discloses a tunnel drainage protection system, comprising a foundation and a tunnel body arranged on the foundation. The tunnel body comprises an initial support layer, a second support layer, a phase change concrete layer, The moulding lining layer and the thermal insulation layer are laid with annular drainage blind pipes in the phase change concrete layer, an inverted arch structure is arranged below the foundation, and a concrete base is pre-buried in the middle bottom of the inverted arch structure, so the A central drain pipe is installed on the concrete base. According to the utility model, the seepage pipe is arranged in the tunnel structure to receive the seepage water in the stratum, and it passes through the annular drainage blind pipe, the drainage groove, the lateral drainage pipe and the central drainage pipe in sequence, and finally is discharged out of the tunnel by the central drainage pipe. To solve the drainage problem of the tunnel, by laying the annular drainage blind pipe in the phase change concrete layer, the annular drainage blind pipe is insulated to prevent the seepage water from freezing and freezing, and to ensure the normal operation of the drainage system.

Description

Tunnel Drainage Protection System

technical field

The utility model relates to the technical field of tunnel protection, in particular to a tunnel drainage protection system.

Background technique

Tunnel waterproofing and drainage refers to the waterproofing and drainage measures taken to ensure that the tunnel building will not cause diseases due to water leakage, endanger the driving safety, corrode the equipment in the tunnel, and reduce the service life of the structure. Comprehensive work on factors such as geology, structural plans, construction methods and material properties.

When the tunnel is put into use, in the stratum near the tunnel, the water content will increase due to changes in the external environment such as rainwater, and a large amount of water will penetrate into the tunnel structure. The lining structure needs to bear the external water pressure, which will endanger The tunnel structure is safe, and even causes the tunnel structure to crack and cause water leakage disease, which seriously affects the safe operation of the tunnel. In addition, in the cold environment, the seepage water in the tunnel structure is easily frozen, resulting in blockage of the drainage structure, which will also cause tunnel structure. For this reason, a tunnel drainage protection system is proposed to solve the above problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a tunnel drainage protection system to solve the problems raised in the above background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a tunnel drainage protection system, comprising a foundation, and a tunnel body arranged on the foundation, the tunnel body comprising an initial support layer, a second The protective layer, the phase change concrete layer, the moulded lining layer and the thermal insulation layer are laid in the phase change concrete layer with an annular drainage blind pipe, and the two ends of the annular drainage blind pipe extend to both sides of the foundation. There are drainage grooves on both sides, the annular drainage blind pipe is communicated with the drainage groove, a water seepage pipe is arranged between the initial support layer and the second support layer, and one end of the water seepage pipe is connected to the annular drainage blind pipe. The pipes are connected, and the bottom of the foundation is provided with an inverted arch structure, and the middle bottom of the inverted arch structure is pre-buried with a concrete base, and a center drain pipe is installed on the concrete base, and the center drain pipe is communicated with a A horizontal drain pipe, one end of the horizontal drain pipe is communicated with the drain groove.

Preferably, the upper part of the drainage groove and the communication place with the annular drainage blind pipe are all set in an opening shape, and a first filter screen and a second filter screen are respectively provided on the two opening sides.

Preferably, the top and bottom of one side of the drainage groove are respectively provided with clamping grooves, elastic members are installed in the clamping grooves opened at the top, and both ends of the first filter screen are clamped in the clamping grooves Inside.

Preferably, an abutment plate is disposed at the top opening of the drainage groove, the abutment plates are symmetrically arranged on both sides of the drainage groove, and the second filter screen is placed on the abutment plate.

Preferably, the annular drainage blind pipe is a corrugated steel pipe.

Preferably, the thermal insulation layer is formed by splicing several pieces of polyurethane thermal insulation boards, and the several pieces of the polyurethane thermal insulation boards are respectively fixed on the inner surface of the molded lining layer by bolts.

Compared with the prior art, the beneficial effects of the present utility model are:

In the utility model, the seepage pipe is arranged in the tunnel structure to receive the seepage water in the stratum, and the seepage water is guided to enter the annular drainage blind pipe through the seepage pipe, and further, the seepage water entering the annular drainage blind pipe passes through the first filter screen Into the drainage groove, further, the permeated water entering the drainage groove enters the central drainage pipe through the horizontal drainage pipe, and finally is discharged out of the tunnel by the central drainage pipe, which can effectively solve the drainage problem of the tunnel. In addition, by laying the annular drainage blind pipe In the phase change concrete layer, the phase change concrete layer improves the heat storage capacity of the concrete by modifying the concrete and improving the technology of combining the phase change energy storage material with the concrete. Freeze knots to ensure the normal operation of the drainage system.

Description of drawings

Fig. 1 is the front view sectional structure schematic diagram of the present utility model;

Fig. 2 is the enlarged schematic view of the structure at the place A in Fig. 1 of the utility model;

FIG. 3 is an enlarged schematic view of the structure at B in FIG. 1 of the present invention.

In the figure: 1. Foundation; 2. Initial support layer; 3. Second support layer; 4. Phase change concrete layer; 5. Molded lining layer; 6. Insulation layer; Drainage groove; 9. Water seepage pipe; 10. Inverted arch structure; 11. Concrete base; 12. Central drainage pipe; 13. Horizontal drainage pipe; 14. First filter screen; 15. Second filter screen; 16. Elastic parts ; 17. Abutment plate.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axial" The orientation or positional relationship indicated by , "radial direction", "circumferential direction", etc. are based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying the indicated device. Or the elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In the present utility model, unless otherwise expressly specified and limited, the terms "arrangement", "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection, or It can be a detachable connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

The utility model provides a tunnel drainage protection system as shown in Figures 1-3, which includes a foundation 1 and a tunnel body arranged on the foundation 1. The tunnel body includes an initial support layer 2, a second supporting layer 2 and a second supporting layer arranged in sequence from the outside to the inside. The supporting layer 3, the phase change concrete layer 4, the moulded lining layer 5 and the thermal insulation layer 6 are laid in the phase change concrete layer 4 with an annular drainage blind pipe 7, and both ends of the annular drainage blind pipe 7 extend to the two sides of the foundation 1. On the side, both sides of the foundation 1 are provided with drainage grooves 8, the annular drainage blind pipe 7 is connected with the drainage groove 8, and a seepage pipe 9 is arranged between the initial support layer 2 and the second support layer 3. One end is communicated with the annular drainage blind pipe 7, the bottom of the foundation 1 is provided with an inverted arch structure 10, the middle bottom of the inverted arch structure 10 is pre-buried with a concrete base 11, and a central drain pipe 12 is installed on the concrete base 11, and the central drainage The pipe 12 is communicated with a transverse drain pipe 13 , and one end of the transverse drain pipe 13 is communicated with the drainage groove 8 .

The initial support layer 2 of the above-mentioned tunnel body is composed of hanging steel mesh, shotcrete, profiled steel arch, arch hollow anchor rod and side wall mortar anchor rod. Between the initial support layer 2 and the second support layer 3 A waterproof cloth can be provided to enhance the waterproof performance. The annular drainage blind pipe 7 is pre-buried in the phase change concrete layer 4, so that the phase change concrete layer 4 can completely wrap the annular drainage blind pipe 7. The seepage pipe 9 extends longitudinally, and its two The end can be set as a horn-shaped structure, which can improve the absorption of water in the formation. The seepage water entering the water seepage pipe 9 enters the central drain pipe 12 through the annular drainage blind pipe 7, the drainage groove 8, and the horizontal drainage pipe 13 in sequence, and finally passes through the central drainage pipe 12. The central drainage pipe 12 is discharged from the tunnel system, and the drainage grooves 8 arranged on both sides of the foundation 1 can also collect and discharge the accumulated water on the surface of the foundation 1 .

In some embodiments of the present invention, the upper part of the drainage groove 8 and the communication place with the annular drainage blind pipe 7 are provided in an opening shape, and a first filter screen 14 and a second filter screen 15 are respectively provided on the two opening sides. .

The surfaces of the first filter screen 14 and the second filter screen 15 are provided with through holes only for flowing water to pass through. When the seepage water in the formation is in the seepage pipe 9, it will be doped with some sediment or solid impurities. The first filter screen 14 is provided at the connection between the annular drainage blind pipe 7 and the drainage groove 8, which can block the solid impurities and ensure the normal flow of the flowing water in the drainage groove 8. A filter cloth is arranged at the connecting end of the seepage pipe 9 and the ground to prevent soil particles from entering the seepage pipe 9 and causing blockage.

In some embodiments of the present invention, the top and bottom of one side of the drainage groove 8 are respectively provided with snap grooves, the snap grooves on the top are provided with elastic members 16, and both ends of the first filter screen 14 are snapped together. in the snap slot.

In some embodiments of the present invention, an abutment plate 17 is disposed at the top opening of the drainage groove 8 , the abutment plates 17 are symmetrically arranged on both sides of the drainage groove 8 , and the second filter screen 15 is placed on the abutment plate 17 . .

With the above structure, the first filter screen 14 and the second filter screen 15 are set as detachable structures, and the second filter screen 15 can be removed by applying an upward external force to the second filter screen 15. When the screen 14 is used, an upward external force needs to be applied to the first filter screen 14 to further shrink the elastic member 16, the bottom end of the first filter screen 14 will fall off from the clamping groove, and then a horizontal force is applied to the first filter screen 14. The external force makes it incline. At this time, the upward external force is released, and the elastic member 16 pushes the top end of the first filter screen 14 out of the snap groove, and the first filter screen 14 can be removed for the staff to perform regular cleaning of the drainage groove 8. clean up.

In some embodiments of the present invention, the annular drain blind pipe 7 is a corrugated steel pipe.

In some embodiments of the present invention, the thermal insulation layer 6 is formed by splicing several pieces of polyurethane thermal insulation boards, and the several pieces of polyurethane thermal insulation boards are respectively fixed on the inner surface of the molded lining layer 5 by bolts.

By arranging the thermal insulation layer 6 on the inner surface of the molded lining layer 5, the influence of the outside cold air on the tunnel system can be reduced, the infiltration water entering the tunnel system can be prevented from freezing, and the protection effect can be achieved.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. A tunnel drainage protection system, comprising a foundation (1), and a tunnel body arranged on the foundation (1), characterized in that: the tunnel body comprises an initial support layer (2), a first supporting layer (2), a second Two supporting layers (3), a phase change concrete layer (4), a moulded lining layer (5) and an insulating layer (6), and an annular drainage blind pipe (7) is laid in the phase change concrete layer (4) , the two ends of the annular drainage blind pipe (7) extend to both sides of the foundation (1), the two sides of the foundation (1) are provided with drainage grooves (8), and the annular drainage blind pipe (7) Connected with the drainage groove (8), a seepage pipe (9) is arranged between the initial support layer (2) and the second support layer (3), and one end of the seepage pipe (9) is connected to the annular drainage blind The pipes (7) are communicated with each other, an inverted arch structure (10) is provided below the foundation (1), and a concrete base (11) is pre-buried in the middle bottom of the inverted arch structure (10). (11) is installed with a central drain pipe (12), the central drain pipe (12) is connected with a transverse drain pipe (13), and one end of the transverse drain pipe (13) is communicated with the drain groove (8). 2. A tunnel drainage protection system according to claim 1, characterized in that: the upper part of the drainage groove (8) and the connecting part with the annular drainage blind pipe (7) are all set as openings, and are arranged at two points. The openings are respectively provided with a first filter screen (14) and a second filter screen (15). 3. A tunnel drainage protection system according to claim 2, characterized in that: the top and bottom of one side of the drainage groove (8) are respectively provided with clamping grooves, which are opened in the clamping grooves on the top An elastic member (16) is installed, and both ends of the first filter screen (14) are clamped in the clamping groove. The tunnel drainage protection system according to claim 2, characterized in that: an abutment plate (17) is provided at the top opening of the drainage groove (8), and the abutment plate (17) is symmetrically arranged On both sides of the drainage groove (8), the second filter screen (15) is placed on the abutment plate (17). 5. A tunnel drainage protection system according to claim 1, characterized in that: the annular drainage blind pipe (7) is a corrugated steel pipe. 6. A tunnel drainage protection system according to claim 1, characterized in that: the thermal insulation layer (6) is formed by splicing several pieces of polyurethane thermal insulation boards, and several pieces of the polyurethane thermal insulation boards are respectively fixed on the mold by bolts. On the inner surface of the lining layer (5).

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