Construction method of tunnel two-lining concrete pouring liquid level monitor

Abstract

The invention discloses a construction method of a tunnel two-lining concrete pouring liquid level monitor, and belongs to the technical field of tunnel construction. The construction method comprisesthe following steps that S1, a distribution box is installed; S2, a detection wire is installed, wherein a waterproof plate is hung, so that the waterproof plate clings to the initial support surface, then the detection wire is fixed on an arch crown, and a double-core copper core wire servers as the detection wire; S3, a detection electrode is fixed, wherein a metal copper core not smaller than2 cm is stripped from the tail end of the detection wire to serve as the detection electrode, and the detection electrode is fixed to the highest position in the center of the arch crown; S4, a systemis detected, wherein circuit connection is detected, lap joint of the detection electrode is carried out, whether a signal light on the distribution box flashes or not is checked, and if yes, it means that circuit connection is good; S5, concrete is poured; S6, the pouring condition of the arch crown is judged; and S7, die pouring is carried out, a non-visual state of concrete top punching construction is changed into a visual state, and therefore the arch cavity phenomenon is avoided or reduced as much as possible.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, more specifically, it relates to a construction method of a liquid level monitor for concrete pouring of the second lining of the tunnel. Background technique [0002] In the process of pouring concrete for the secondary lining of traditional tunnels, it is impossible to observe whether the concrete is densely poured when the roof is poured, resulting in many void defects in the vault. It will cause a series of hazards such as water leakage, freezing damage, steel bar corrosion, etc., and may also induce the instability and fall of surrounding rocks. In severe cases, collapse accidents will occur, posing a serious threat to traffic quality and personnel safety. [0003] For the cavity of the secondary lining vault, the traditional treatment measures are post-perforation and grouting to fill the cavity, which not only requires a lot of expense and high cost, but also easily damages the...

AI Technical Summary

Problems solved by technology

[0002] In the process of pouring concrete for the secondary lining of traditional tunnels, it is impossible to observe whether the concrete is densely poured when the roof is poured, resulting in many void defects in the vault. It will cause a series of hazards such as water leakage, freezing damage, steel bar corrosion, etc., and may also induce the instability and fall of surrounding rocks. In severe cases, collapse accidents will occur, posing a serious threat to traffic quality and personnel safety.

[0003] For the cavity of the secondary lining vault, the traditional treatment measures are drilling and grouting in the later stage to fill the cavity, which is not only expensive and costly, but also easy to damage the waterproof board, resulting in secondary damage

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