Saturation open cabin operation method and saturation open cabin operation equipment under shielding pneumatic conditions

Abstract

The invention discloses a saturation open cabin operation method and saturation open cabin operation equipment under shielding pneumatic conditions. According to the technical scheme, the saturation open cabin operation method and the saturation open cabin operation equipment have the advantages that the highest born pressure can reach 20bar, decompression can be omitted during operation in each shift, the influence of low efficiency due to decompression in an operation method implemented by means of filling compressed air in cabins in the prior art can be eliminated, and the tool changing efficiency can be greatly improved; operators do not need to be repeatedly decompressed, and accordingly personal injury to the workers can be greatly relieved.

Description

technical field [0001] The invention relates to a saturated opening operation method and equipment under the condition of compressed air in a shield tunnel, which are applied in the field of shield tunnels. Background technique [0002] Shield machine is a kind of special engineering machinery for tunneling. Modern shield boring machine integrates light, mechanics, electricity, hydraulics, sensing and information technology. Functions such as measurement guidance and deviation correction involve geology, civil engineering, machinery, mechanics, hydraulics, electricity, control, measurement and other disciplines and technologies, and require "tailor-made" design and manufacture according to different geology, requiring extremely high reliability. Shield boring machines have been widely used in subway, railway, highway, municipal, hydropower and other tunnel projects. [0003] The shield machine can be mainly divided into mud-water balance shield machine and earth pressure ba...

AI Technical Summary

Problems solved by technology

[0009]2) Each shift of compression work must carry out the procedure of pressurization and decompression to normal pressure. The effective working time of each shift is only 20~25min. The total time is more than 180min, and the work efficiency is low, which greatly affects the progress of the project;

[0010]3) Decompression procedures are performed many times a day, which has a high incidence of decompression sickness and endangers the health of workers;

[0011]4) When workers breathe compressed air, the density of the breathing gas increases, the breathing resistance increases, and the working ability decreases; the anesthesia effect of nitrogen in the compressed air leads to the risk awareness of the workers and judgment ability are seriously reduced, prone to personal injury accidents

[0012] Therefore, how to prolong the operating time of operators in a high-pressure environment and reduce the time occupied by decompression is an important task to solve the low efficiency of tool change work

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