Construction method for prevention and control of water seepage on the surface of the secondary lining of the tunnel

A construction method and tunnel technology, applied in the direction of tunnel lining, tunnel, shaft lining, etc., can solve the problems of dampness, non-compactness, etc., and achieve the effects of improving water seepage, good flatness, and improving color inconsistency

Active Publication Date: 2022-07-19
中铁一局集团(广州)建设工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to improve the problem of dampness and water seepage caused by the lack of compactness and small holes behind the second lining, this application provides a construction method for preventing water seepage on the surface of the second lining of the tunnel

Method used

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  • Construction method for prevention and control of water seepage on the surface of the secondary lining of the tunnel
  • Construction method for prevention and control of water seepage on the surface of the secondary lining of the tunnel
  • Construction method for prevention and control of water seepage on the surface of the secondary lining of the tunnel

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Experimental program
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Effect test

Embodiment 1

[0042] refer to figure 1 and figure 2 , the construction method for preventing water seepage on the surface of the secondary lining of the tunnel includes the following steps:

[0043] S1: Build a reinforcement frame on the initial lining surface of the tunnel, and the reinforcement frame is laid in a circumferential direction; provide the main keel 1, and fix the main keel 1 on the surface of the initial lining, build longitudinal reinforcement 2 and transverse reinforcement 3 on the main keel 1, to form a rebar frame.

[0044] Specifically, refer to image 3 , in this embodiment, the main keel 1 is fixed on the surface of the initial lining by the embedded screw, the main keel 1 is provided with several positioning grooves 11 equidistant along the length direction, the longitudinal steel bar 2 is bent according to the outline of the tunnel, and the longitudinal The steel bar 2 is clamped in the positioning groove 11, and the longitudinal steel bar 2 and the main keel 1 a...

Embodiment 2

[0057] refer to figure 1 , the construction method for preventing water seepage on the surface of the secondary lining of the tunnel includes the following steps:

[0058] S1: Build a reinforcement frame on the initial lining surface of the tunnel, and the reinforcement frame is laid in a circumferential direction; provide the main keel 1, and fix the main keel 1 on the surface of the initial lining, build longitudinal reinforcement 2 and transverse reinforcement 3 on the main keel 1, to form a rebar frame.

[0059] Specifically, in this embodiment, the main keel 1 is fixed on the surface of the initial lining by pre-embedded screws, and the main keel 1 is provided with a number of positioning grooves 11 equidistant along the length direction, and the longitudinal steel bars 2 are bent according to the outline of the tunnel. , the longitudinal steel bar 2 is clamped in the positioning groove 11, and the longitudinal steel bar 2 and the main keel 1 are welded. The transverse ...

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Abstract

The present application discloses a construction method for preventing and controlling water seepage on the surface of the secondary lining of a tunnel, which belongs to the field of tunnel construction, and includes the following steps: S1: build a steel frame on the primary lining surface of the tunnel, and the steel frame is laid in a circumferential direction; provide a main keel, and fix the main keel On the surface of the initial lining, build longitudinal steel bars and transverse steel bars on the main keel to form a steel frame; S2: Pre-embed grouting pipes in the steel frame, and the grouting pipes are laid in a circumferential direction; among them, the grouting pipes are arranged along the tunnel. The grouting pipes are arranged at intervals in the length direction, and the grouting pipe is located at the construction joint position of the second lining; S3: Build a formwork trolley, and use the formwork trolley to pour the second lining at the steel frame position to form the second lining structure; S4: The second lining structure Carry out maintenance; S5: After the secondary lining structure reaches the predetermined strength, use the grouting pipe to perform circumferential grouting behind the back. The application effectively improves the water seepage on the surface of the secondary lining.

Description

technical field [0001] The present application relates to the field of tunnel construction, in particular to a construction method for preventing and controlling water seepage on the surface of the secondary lining of a tunnel. Background technique [0002] The secondary lining of the tunnel means that when the external support of the tunnel is completed, the steel mesh is arranged around the tunnel, and then the secondary lining trolley is used to seal the mold and pour concrete at the same time, and finally form an integral reinforced concrete structure around the tunnel. The upper stress and the effect of leaving enough space for the lower passage. [0003] In the existing tunnel construction, the phenomenon that the secondary lining is not dense and the top has tiny voids is more common in the actual construction process. At present, the traditional preventive measure in the industry is to fully vibrate the secondary lining of the tunnel when pouring, but there are still...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10
CPCE21D11/105E21D11/102
Inventor 姚顺顺梁勇徐成双张璞帅李祚旭黄汉超
Owner 中铁一局集团(广州)建设工程有限公司
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