Tunnel lining structure

Abstract

The utility model discloses a tunnel lining structure which comprises a C40HF abrasion-resistant reinforced concrete lining, a waterside steel lining and a C25 reinforced concrete lining, the C40HF abrasion-resistant reinforced concrete lining and the C25 reinforced concrete lining are integrally connected, the C40HF abrasion-resistant reinforced concrete lining is composed of a combination section A, a combination section B and a combination section C, the C25 reinforced concrete lining is composed of a combination section D, and the combination section B and the combination section C are integrally connected. Wherein the C40HF abrasion-resistant reinforced concrete lining takes abrasion-resistant concrete as a main body, anchor bars are pre-arranged in the abrasion-resistant concrete, a water stop ring is further mounted on the side, where the anchor bars are located, of the interior of the abrasion-resistant concrete, and a stiffening ring is arranged on the side, opposite to the reinforced concrete lining, of the C25 reinforced concrete lining. According to the tunnel lining structure, the Q345-C-grade steel plate lining waterproof effect is added to the downstream thin overlying rock tunnel body section, meanwhile, C40HF abrasion-resistant concrete is reduced and adjusted to be common C25 concrete, and the safety problem of the high-water-head thin overlying rock tunnel structure is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of reservoir water conservancy projects, and in particular relates to a tunnel lining structure. Background Art

[0002] This patent is close to the flood discharge and water diversion tunnel structure in existing reservoir projects. Its structure consists of an upstream water diversion section, a control section, a tunnel discharge section, an energy dissipation section and a downstream water withdrawal channel. It is generally used for reservoir flood discharge, emptying and sand removal.

[0003] In the process of realizing the utility model, the inventors found that there are at least the following problems in the technology: the structure has certain requirements on the geological conditions and surrounding rocks of the construction area, and the thickness of the inner lining cover layer needs to meet the thickness of the cover rock mass under high water head. If the joints and fissures of the tunnel crossing or obliquely crossing are well developed, or there is water leakage in the joints and fissures, the internal structure of the tunnel will fall off.

[0004] To this end, we proposed a tunnel lining structure to solve the above problems. Utility Model Content

[0005] The main purpose of the utility model is to provide a tunnel lining structure, which solves the safety problem of tunnel structures with high head and thin overburden by adding Q345-C grade steel plate lining waterproofing to the downstream thin overburden tunnel section and at the same time reduces the concrete behind the steel plate from C40HF impact-resistant concrete to ordinary C25 concrete, thereby solving the safety problem of tunnel structures with high head and thin overburden, and can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A tunnel lining structure, comprising a C40HF anti-impact reinforced concrete lining, a water-facing steel lining and a C25 reinforced concrete lining, wherein the C40HF anti-impact reinforced concrete lining and the C25 reinforced concrete lining are connected in an integrated manner, the C40HF anti-impact reinforced concrete lining is composed of a combination section A, a combination section B and a combination section C, and the C25 reinforced concrete lining is composed of a combination section D, wherein the C40HF anti-impact reinforced concrete lining is mainly composed of anti-impact concrete, anchor bars are preset in the anti-impact concrete, and a water stop ring is installed on the side where the anchor bars are located inside the anti-impact concrete, a stiffening ring is arranged on the side of the C25 reinforced concrete lining that is not facing the reinforced concrete lining, a plurality of rubber layers are arranged in sequence at equal intervals in the whole composed of the C40HF anti-impact reinforced concrete lining and the C25 reinforced concrete lining, and a water-facing surface is arranged at the location of each rubber layer, and the rubber layer is fixed in the water-facing surface;

[0008] A water surface protection layer is provided on the outer side of the water surface steel lining, and a base surface protection layer is provided on the inner side thereof, wherein a plurality of channel steels are installed at equal intervals on the inner side of the water surface steel lining, tie rods are installed inside the water surface steel lining, and a steel plate lining is provided on the inner wall of the water surface steel lining, wherein a plurality of channel steels are installed on the steel plate lining, so that the plurality of channel steel structures remain stable.

[0009] As a preferred implementation scheme, the joint segments A, B, C and D of the C40HF wear-resistant reinforced concrete lining are arranged in sequence and formed in one piece, so that the C40HF wear-resistant reinforced concrete lining structure remains stable.

[0010] As a preferred implementation scheme, a pipe wall is provided in the integral structure composed of C40HF anti-impact reinforced concrete lining and C25 reinforced concrete lining, and the pipe wall has a thickness of 12 mm and a pipe diameter of φ4000.

[0011] As a preferred implementation scheme, construction joints are provided in the C40HF wear-resistant reinforced concrete lining and at the junction of the C40HF wear-resistant reinforced concrete lining and the C25 reinforced concrete lining, and the contact surface of the construction joints is coated with 2 to 3 coats of emulsified asphalt.

[0012] As a preferred implementation scheme, a water-stopping copper sheet is installed at the edge of the C25 reinforced concrete lining on the side facing away from the C40HF impact-resistant reinforced concrete lining, thereby achieving a water-stopping effect.

[0013] As a preferred embodiment, the tie bars are arranged in a plum blossom shape longitudinally, and a tie bar is arranged every three longitudinal bars transversely.

[0014] In summary, the technical effects and advantages of the utility model are as follows:

[0015] The tunnel lining structure adds Q345-C grade steel plate lining for waterproofing on the downstream thin-covered rock section, and at the same time reduces the concrete behind the steel plate from C40HF impact-resistant concrete to ordinary C25 concrete, thus solving the safety problem of tunnel structures with high head and thin overburden. This allows water transfer tunnels to be used in more areas, greatly improving the adaptability and versatility of this project, and allowing more areas to better protect the transportation and supply of water sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of the combined section of the diversion, flood discharge and water delivery tunnel of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the water stop ring of the utility model;

[0018] Figure 3 This is a schematic diagram of the water surface protection layer structure of the utility model;

[0019] Figure 4It is the structural diagram of the combined section of the diversion and flood discharge water delivery tunnel of the utility model and the steel bar diagram of the combined section;

[0020] Figure 5 This is a schematic diagram of the steel plate lining structure of the utility model.

[0021] In the figure: 100, C40HF impact-resistant reinforced concrete lining; 200, steel lining near water surface; 300, C25 reinforced concrete lining; 1, impact-resistant concrete; 2, anchor bars; 3, epoxy resin layer; 4, stiffening ring; 5, construction joint; 6, rubber; 7, water-stop ring; 8, pipe wall; 9, water-stop copper sheet; 10, water-facing surface protective layer; 11, base surface protective layer; 12, channel steel; 13, tension bars; 14, water-facing surface; 15, steel plate lining. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-Figure 5 A tunnel lining structure comprises a C40HF wear-resistant reinforced concrete lining 100, a water-facing steel lining 200 and a C25 reinforced concrete lining 300, wherein the C40HF wear-resistant reinforced concrete lining 100 and the C25 reinforced concrete lining 300 are connected in one piece, the C40HF wear-resistant reinforced concrete lining 100 is composed of a combination section A, a combination section B and a combination section C, the C25 reinforced concrete lining 300 is composed of a combination section D, the combination section A, the combination section B, the combination section C and the combination section D of the C40HF wear-resistant reinforced concrete lining 100 are arranged in sequence and formed in one piece, so that the structure of the C40HF wear-resistant reinforced concrete lining 100 remains stable, and the water-facing steel lining 200 is a Q345-C grade steel plate lining;

[0024] The C40HF anti-impact reinforced concrete lining 100 is mainly composed of the anti-impact reinforced concrete 1, and anchor bars 2 are preset in the anti-impact reinforced concrete 1. A water stop ring 7 is installed on the side where the anchor bars 2 are located inside the anti-impact reinforced concrete 1. An epoxy resin layer is filled between the anchor bars 2 and the water stop ring 7 to play a compacting role. A stiffening ring 4 is arranged on the side of the C25 reinforced concrete lining 300 facing away from the C40HF anti-impact reinforced concrete lining 100. Construction joints 5 are arranged in the C40HF anti-impact reinforced concrete lining 100 and at the junction of the C40HF anti-impact reinforced concrete lining 100 and the C25 reinforced concrete lining 300, and the contact surface of the construction joint 5 is coated with 2 to 3 layers of emulsified asphalt.

[0025] A plurality of rubber layers 6 are arranged at equal intervals in sequence in the whole body formed by the C40HF anti-impact and wear reinforced concrete lining 100 and the C25 reinforced concrete lining 300. A pipe wall 8 is arranged in the whole body formed by the C40HF anti-impact and wear reinforced concrete lining 100 and the C25 reinforced concrete lining 300. The pipe wall 8 has a wall thickness of 12 mm and a pipe diameter of φ4000. A water-stopping copper sheet 9 is installed at the edge of the C25 reinforced concrete lining 300 on the side facing away from the C40HF anti-impact and wear reinforced concrete lining 100, thereby playing a role in water-stopping. A water-facing surface 14 is arranged at the location of each rubber layer 6, and the rubber layer 6 is fixed in the water-facing surface 14.

[0026] A water surface protection layer 10 is provided on the outer side of the water surface steel lining 200, and a base surface protection layer 11 is provided on the inner side thereof, wherein a plurality of channel steels 12 are installed at equal intervals on the inner side of the water surface steel lining 200, and tie bars 13 are installed inside the water surface steel lining 200. The tie bars 13 are arranged in a plum blossom shape longitudinally, and a tie bar 13 is arranged every three longitudinal bars transversely. A steel plate lining 15 is provided on the inner wall of the water surface steel lining 200, wherein a plurality of channel steels 12 are installed on the steel plate lining 15, so that the structure of the plurality of channel steels 12 remains stable.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tunnel lining structure, comprising a C40HF anti-impact reinforced concrete lining (100), a water surface steel lining (200) and a C25 reinforced concrete lining (300), characterized in that: The C40HF anti-impact reinforced concrete lining (100) and the C25 reinforced concrete lining (300) are connected in one piece, the C40HF anti-impact reinforced concrete lining (100) is composed of a connecting section A, a connecting section B and a connecting section C, and the C25 reinforced concrete lining (300) is composed of a connecting section D; The C40HF anti-impact reinforced concrete lining (100) is mainly composed of anti-impact concrete (1), anchor bars (2) are preset in the anti-impact concrete (1), and a water stop ring (7) is installed on the side where the anchor bars (2) are located inside the anti-impact concrete (1), a stiffening ring (4) is provided on the side of the C25 reinforced concrete lining (300) facing away from the C40HF anti-impact reinforced concrete lining (100), a plurality of rubber layers (6) are arranged in sequence at equal intervals in the whole formed by the C40HF anti-impact reinforced concrete lining (100) and the C25 reinforced concrete lining (300), and a water-facing surface (14) is provided at the location of each rubber layer (6), and the rubber layer (6) is fixedly installed in the water-facing surface (14); The outer side of the water-facing steel lining (200) is provided with a water-facing protective layer (10), and the inner side thereof is provided with a base surface protective layer (11), wherein a plurality of channel steels (12) are installed at equal intervals on the inner side of the water-facing steel lining (200), a tie rod (13) is installed inside the water-facing steel lining (200), and a steel plate lining (15) is provided on the inner wall of the water-facing steel lining (200), wherein the plurality of channel steels (12) are installed on the steel plate lining (15).

2. A tunnel lining structure according to claim 1, characterized in that: The connecting section A, connecting section B, connecting section C and connecting section D of the C40HF anti-impact and wear reinforced concrete lining (100) are arranged in sequence and formed in one piece, so that the structure of the C40HF anti-impact and wear reinforced concrete lining (100) remains stable.

3. A tunnel lining structure according to claim 1, characterized in that: The whole formed by the C40HF anti-impact reinforced concrete lining (100) and the C25 reinforced concrete lining (300) is provided with a pipe wall (8), and the pipe wall (8) has a wall thickness of 12 mm and a pipe diameter of φ4000.

4. A tunnel lining structure according to claim 1, characterized in that: Construction joints (5) are provided inside the C40HF anti-impact reinforced concrete lining (100) and at the junction of the C40HF anti-impact reinforced concrete lining (100) and the C25 reinforced concrete lining (300).

5. A tunnel lining structure according to claim 1, characterized in that: A water-stop copper sheet (9) is installed at the edge of the C25 reinforced concrete lining (300) on the side facing away from the C40HF impact-resistant reinforced concrete lining (100).

6. A tunnel lining structure according to claim 1, characterized in that: The tensioning bars (13) are arranged in a longitudinal plum blossom shape.

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