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Movable pouring formwork and construction process for tunnel anchoring and shotcreting support concrete mixer

A construction technology, concrete technology, applied in the direction of tunnel, tunnel lining, bolt installation, etc., can solve the problems of time-consuming, waste, etc., and achieve the effect of increasing construction efficiency, reducing waste, and reducing labor

Inactive Publication Date: 2018-08-24
龚岗
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing tunnel anchor shotcrete support concrete spraying takes a lot of time and is seriously wasted

Method used

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Examples

Experimental program
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Embodiment Construction

[0020] The following is a further detailed description through specific embodiments:

[0021] Embodiments of the mobile pouring formwork for tunnel bolting and shotcrete concrete machine and the construction technology, the specific steps are as follows:

[0022] The first step is to treat the blasted rock surface. Generally, the rock surface is washed with high-pressure water to wash the floating dust and debris on the blasted rock surface. When the rock surface is easily deliquescent and muddy when exposed to water, high-pressure wind is used to clean the rock surface.

[0023] The second step: concrete mixing and transportation, wet sprayed concrete mixing adopts fully automatic metering forced mixer, transportation adopts concrete transportation tanker, and mixes with transportation. Supply of wet shotcrete;

[0024] The third step: close the wall of the hole, and seal the gap between the wall of the hole and the arch on the palm face by means of anchor spray.

[0025] S...

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PUM

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Abstract

The invention relates to the field of tunnel construction, in particular to a movable pouring formwork and construction process for a tunnel anchoring and shotcreting support concrete mixer. The construction process comprises the following steps that 1, sprayed rock surface treatment is carried out; 2, concrete mixing and transportation is carried out; 3, tunnel wall is closed; 4, the pouring formwork is in place; 5, pouring operation is carried out; and 6, maintenance is carried out. A cantilever is used for driving the arc-shaped pouring formwork to conduct pouring in sequence, the construction efficiency is high, springback can be largely avoided, and time and resources are saved.

Description

technical field [0001] The invention relates to the field of tunnel construction. Background technique [0002] In tunnel construction, according to the different types of tunnel rock and excavation section, tunnel excavation is divided into construction methods such as full-section method, upper and lower step method, and partial excavation method. According to the principle of New Austrian Law, the bolt and shotcrete support, as part of the permanent lining of the tunnel, is generally considered to be used in the surrounding rock of grade III and above; Larger, the outer contour line of the excavation needs to reserve a large space (20cm) as a deformation reserve; the bolt and shotcrete support must be in close contact with the surrounding rock mass as much as possible, that is, to ensure that the support and the surrounding rock act as one The unified support system works together; the new Austrian method allows limited deformation of the surrounding rock and supporting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21D20/02
CPCE21D11/102E21D20/02
Inventor 龚岗王双卯郭宝库
Owner 龚岗
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