U-shaped closed screw machine anti-gushing system capable of separating slag and water and anti-gushing method

Abstract

The invention discloses a U-shaped closed screw machine anti-gushing system capable of separating slag and water and an anti-gushing method, and aims to solve the problems of poor effect and single slag discharging mode of an anti-gushing mechanism of a screw machine in the prior art. The system comprises a U-shaped sealing box body in sealing connection with a first screw conveyor, wherein a second screw conveyor is arranged in the U-shaped sealing box body, and a slag outlet of the second screw conveyor corresponds to a rear matched continuous belt conveyor; the bottom of the U-shaped sealing box body is provided with a slag-water separation mechanism. According to the system, the U-shaped closed box body capable of separating slag and water is additionally mounted, so that when a water-rich and high-water-pressure stratum is encountered in the shield tunneling process, the spiral conveyor works together with a mud pump to effectively separate and convey the slag, soil and water, andthe shield construction is stopped because of a gushing phenomenon generated when the spiral conveyor discharges slag.

Description

technical field [0001] The invention relates to the technical field of shield tunneling, in particular to a U-shaped airtight screw machine gushing prevention system capable of separating slag from water and a gushing prevention method. Background technique [0002] The screw conveyor is an important part of the earth pressure balance shield machine. On the one hand, it is the channel for the discharge of muck during the excavation of the shield machine; , prevent the water in the soil from flowing out, and keep the soil pressure in the soil sealed cabin stable. [0003] In the process of shield construction, the geological conditions are complex and changeable, and often encounter water-rich or high water pressure formations, which cause the screw conveyor to gush, and a large amount of high-pressure mud is ejected from the excavation port. If the pipeline is polluted, the dripping mud will flow to the lower part of the shield machine, which will submerge the lower segment...

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Problems solved by technology

[0005] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a U-shaped airtight screw machine anti-spurt system and anti-surge method that can separate slag and water, which solves the problem of the poor effect of the screw machine anti-surge mechanism and the single slag discharge method in the prior art. The problem

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