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Whole-process visible anti-void forward top reaching construction method for tunnel vault concrete

A construction method and concrete technology, applied in tunnels, tunnel linings, earthwork drilling, etc., can solve the problems of unfilled full linings and voids, and achieve the effect of avoiding voids in vault concrete

Active Publication Date: 2019-11-19
中铁十一局集团第五工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention aims to solve the problem that the lining of the tunnel lining is not fully filled with concrete, which causes the lining to be voided

Method used

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  • Whole-process visible anti-void forward top reaching construction method for tunnel vault concrete
  • Whole-process visible anti-void forward top reaching construction method for tunnel vault concrete
  • Whole-process visible anti-void forward top reaching construction method for tunnel vault concrete

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Embodiment Construction

[0038] Below by embodiment and in conjunction with accompanying drawing, the present invention will be further described:

[0039] A fully visualized forward-push construction method for concrete void-proofing of a tunnel vault, comprising the following steps:

[0040] Step 1: Use the lining trolley to arrange several pouring holes at intervals along the length direction of the tunnel vault, and each pouring hole is equipped with an anti-vacation positive punching device.

[0041] combine image 3 — Figure 5 As shown, the anti-vacation forward punching device is mainly composed of a fixed vertical rod 1, a lifting seat 2, a closed gate valve 3 and a conduit 4. The conduit 4 is fixedly installed above the lifting seat 2, and is used for connecting the concrete delivery pump pipe. The closed gate valve 3 is installed on the upper end of the fixed vertical rod 1, and the opening and closing of the closed gate valve 3 is automatically controlled by a horizontal cylinder 5 or a...

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Abstract

The invention discloses a whole-process visible anti-void forward top reaching construction method for tunnel vault concrete. A plurality of pouring holes are sequentially formed at intervals in the length direction of a tunnel vault by using a lining trolley, and each pouring hole is provided with an anti-void forward top reaching device; the anti-void forward top reaching devices and a visible pouring device are used for forward concrete layered pouring of a hole I; concrete pouring of a hole II, a hole III and the like is carried out according to the concrete pouring method of the hole I; after it is confirmed that a hole is filled with concrete after pouring, vibration and filling top reaching are carried out on all pouring holes except the adjacent former hole; and concrete pouring ofthe last hole is carried out, a video probe is moved to a reserved observation hole of an end template for observation, and then all pouring holes are subjected to vibration and filling top reaching. By means of the method, dense and full pouring of vault concrete is ensured through forward layered pouring, layered top reaching, repeated filling top reaching and the visible pouring device, and the problem of tunnel lining void is solved.

Description

technical field [0001] The invention belongs to the technical field of engineering construction, and in particular relates to a concrete pouring method for a tunnel vault, which can prevent the void of the vault after pouring. Background technique [0002] combine figure 1 , figure 2 As shown, the traditional tunnel lining vault concrete is poured by reverse pressure in the lining trolley. The principle is that the pressure of the concrete delivery pump pushes the lining concrete from the bottom to the top until the concrete fills the entire lining trolley. The reverse topping grouting pipe is directly welded to the lining trolley, and does not go deep into the interior of the lining trolley. [0003] The deficiencies in the prior art are reflected in the following points: [0004] (1) The pumping pressure required for reverse top pressure is high, and the concrete cannot be fully pumped when the pumping pressure is insufficient; [0005] (2) The delivery pump is damage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21D11/18
CPCE21D11/10E21D11/18
Inventor 郑心铭张旭东王元清杨斌赵健黎庶刘俊成唐达昆杨阳李勇刘明辉王更峰吕虎
Owner 中铁十一局集团第五工程有限公司
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