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Wet spray construction process

A construction technique and wet spraying technology, which is applied in shaft equipment, shaft lining, mining equipment, etc., can solve the problems of low wet spraying quality and cumbersome operation of wet spraying process, and achieve low labor intensity, low rebound rate of shotcrete, The effect of convenient and safe operation process

Active Publication Date: 2020-07-31
CHINA FIRST HIGHWAY ENG CO LTD +1
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a wet spraying construction process to improve the traditional wet spraying process of cumbersome operation and low quality of wet spraying

Method used

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Embodiment

[0037] see figure 1 - Figure 8 , the present embodiment provides a kind of wet spraying construction technique, is used for the wet spraying operation of tunnel, and this construction technique comprises the following steps:

[0038]Use the wet spray manipulator to spray the concrete mixture, first spray the side wall of the tunnel, spray from bottom to top when spraying the side wall, and spray the discharge port of the wet spray manipulator perpendicular to the side wall, the discharge port The distance from the side wall is 0.8m-1.2m. Then, the arched top of the tunnel is sprayed, and the whole wet spraying operation is carried out step by step from one end of the tunnel to the other end.

[0039] Optionally, the concrete mixture includes cement, coarse aggregate, fine aggregate, quick-setting agent, water reducer and water, and the weight of the cement, coarse aggregate, fine aggregate, water reducer and water The share ratio is (450-480): (860-880): (931-945): (22.5-25...

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Abstract

The invention provides a wet spraying construction technology. The wet spraying construction technology includes the following steps that a wet spraying mechanical arm is used for spraying concrete mixed liquor, and firstly spraying to the side wall of a tunnel from bottom to top, a discharging port of the wet spraying mechanical arm is perpendicular to the side wall to perform spraying, the distance between the discharging port and the side wall is 0.8-1.2 m, then the arch-shaped top of the tunnel is sprayed, and in the whole process of wet spraying, operation is performed from one end of thetunnel to the other end of the tunnel step by step. During the operation, the wet spraying construction technology realizes convenience and safety, the labor intensity of construction workers is low,efficiency is high, and after wet spraying is completed, the rebound rate of the sprayed concrete is smaller than 15% and can be lowered greatly.

Description

technical field [0001] The invention relates to the field of construction spray protection equipment, in particular to a wet spray construction process. Background technique [0002] In recent years, with the rapid development of my country's economy, the machinery industry has developed rapidly, and the development of the construction machinery industry has been particularly prominent. Construction machinery products such as concrete wet spraying machines have been widely used in economic construction to reduce people's workload. , greatly improving work efficiency. [0003] For the concrete wet spraying machine, it is an initial support equipment widely used in tunnels and other projects. When working, when the concrete in the wet spraying machine is transported to the nozzle device through the pipeline, it is necessary to add an accelerator to the nozzle device. And through the high-pressure air, the concrete is sprayed out at high speed through the nozzle device, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10
CPCE21D11/10
Inventor 张学义王东旭钟焱李斌
Owner CHINA FIRST HIGHWAY ENG CO LTD
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