Tunnel adaptive lining structure in complex environment and construction method thereof

Patent metadata

Field	Value
Publication number	US-11499427-B2
Application number	US-202117158720-A
Country	US
Kind code	B2
Filing date	Jan 26, 2021
Priority date	Oct 21, 2020
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

The disclosure discloses an adaptive lining structure of a tunnel in complex environment and a construction method thereof, and relates to the technical field of tunnel construction, comprising a lining, a pressure regulating layer and a connecting cylinder; wherein the pressure regulating layer is provided between the lining and a surrounding rock; and the connecting cylinder is provided in the tunnel and runs through the top of the lining. The adaptive lining structure of a tunnel in complex environment and the construction method in the disclosure are simple in structure, reasonable in design and convenient for efficient construction; it can deal with engineering problems such as lining cracking caused by high internal water and high external water in the tunnel, and can ensure the safety of tunnel lining in different periods.

First claim

What is claimed is:

1. A tunnel adaptive lining structure in complex environment, comprising:
a lining;
a pressure regulating layer, the pressure regulating layer being provided between the lining and a surrounding rock, the pressure regulating layer comprising a plurality of pressure regulating chambers, the plurality of pressure regulating chambers being spaced from each other such that spaces are formed between the plurality of pressure regulating chambers, and the plurality of pressure regulating chambers in communication with each other via connections;
a connecting cylinder, wherein the connecting cylinder is within one of the spaces between the plurality of pressure regulating chambers; and
two one-way valves, the two one-way valves being provided in the connecting cylinder;
wherein the connections comprise an internal water connecting pipe and a plurality of connecting pipes, wherein the internal water connecting pipe is in communication with two of the plurality of pressure regulating chambers, and the internal water connecting pipe passes through the connecting cylinder, and wherein the plurality of connecting pipes are in communication with the plurality of pressure regulating chambers; and
wherein the two one-way valves are oriented in opposite directions, an upper end of each of the two one-way valves is in communication with each other through a first branch pipe, and the first branch pipe is in communication with the internal water connecting pipe.

2. The tunnel adaptive lining structure in complex environment according to claim 1 ,
wherein an outer side of each of the plurality of pressure regulating chambers is in contact with the surrounding rock, and an inner side of each of the plurality of pressure regulating chambers is connected with an outer wall of the lining.

3. The tunnel adaptive lining structure in complex environment according to claim 2 , wherein the plurality of pressure regulating chambers are made of a flexible high-pressure resistant material.

4. The tunnel adaptive lining structure in complex environment according to claim 1 , wherein a water collecting port is provided at a top of the connecting cylinder, and the water collecting port is in communication with the surrounding rock.

5. A construction method of the tunnel adaptive lining structure in complex environment according to claim 1 , comprising steps of:
step 1, making the plurality of pressure regulating chambers according to a size of a tunnel, so that the pressure regulating layer comprising the plurality of pressure regulating chambers covers an inner surface of the surrounding rock of the tunnel, wherein the plurality of pressure regulating chambers are configured to be spaced from each other;
step 2, fixing the plurality of pressure regulating chambers on the surrounding rock of the tunnel, and connecting the plurality of pressure regulating chambers with the plurality of connecting pipes;
step 3, installing and fixing the connecting cylinder between the two of the plurality of pressure regulating chambers and having the internal water connecting pipe pass through the connecting cylinder and connect the two of the plurality of pressure regulating chambers to form a circle of pressure regulating chambers;
step 4: repeating the above steps 2 and 3 to install a plurality of circles of pressure regulating chambers according to a length of the tunnel;
step 5: regulating pressure values of the two one-way valves and installing the two one-way valves into the connecting cylinder; and
step 6, pouring the lining and finishing.

6. The construction method of the tunnel adaptive lining structure in complex environment according to claim 5 ,
wherein the plurality of pressure regulating chambers are in communication with each other via the connecting pipes; and
wherein an outer side of each of the plurality of pressure regulating chambers is in contact with the surrounding rock, and an inner side of each of the plurality of pressure regulating chambers is connected with an outer wall of the lining.

7. The construction method of the tunnel adaptive lining structure in complex environment according to claim 5 , wherein the plurality of pressure regulating chambers are made of a flexible high-pressure resistant material.

8. The construction method of the tunnel adaptive lining structure in complex environment according to claim 5 , wherein the connecting cylinder is in communication with the pressure regulating layer through the internal water connecting pipe.

9. The construction method of the tunnel adaptive lining structure in complex environment according to claim 5 , wherein a water collecting port is provided at the top of the connecting cylinder, and the water collecting port is in communication with the surrounding rock.

10. The tunnel adaptive lining structure in complex environment according to claim 1 , further comprising a connecting cylinder mounting plate, wherein the connecting cylinder mounting plate is provided in the connecting cylinder, and wherein one side of the connecting cylinder mounting plate is in communication with the internal water connecting pipe, and the other end of the connecting cylinder mounting plate is in communication with the two one-way valves.

Assignees

• China Inst Water Resources & Hydropower Res

Inventors

• Wang Xiaogang
• Liu Lipeng
• Sun Xingsong
• Fu Ruizhi
• Ling Yongyu
• Wang Yujie
• Zhao Yufei
• Duan Qingwei
• Lin Xingchao
• Jiang Long
• Cao Ruilang
• Zhang Qiang
• Sun Ping
• Pi Jin

Classifications

• Y02E10/20

  Hydro energy · CPC title

• E21D11/38

  Waterproofing (in general E02D31/00); Heat insulating; Soundproofing; Electric insulating (for building constructions in general E04B1/62) · CPC title

• E21D11/10 Primary

  with concrete cast in situ; Shuttering {also lost shutterings, e.g. made of blocks, of metal plates} or other equipment adapted therefor · CPC title

• E21D11/05 Primary

  using compressible insertions · CPC title

• E21D11/386

  inflatable sealing means · CPC title