Washing system of slurry shield cutterhead and construction method of washing system

Abstract

The invention relates to a washing system of a slurry shield cutterhead and a construction method of the washing system. The washing system comprises a slurry sending pipe for inputting slurry to a slurry bin, a central pipe with one end communicating with the slurry sending pipe, a circulating pipe with one end communicating with the central pipe and a slurry discharging pipe with one end extending to the bottom of an air cushion bin; one end of the slurry sending pipe extends into the slurry bin and is located above the center of the cutterhead; the other end of the central pipe extends intothe slurry bin and is opposite to the center of the cutterhead; the other end of the circulating pipe extends into the air cushion bin and is located below the liquid level of the slurry in the air cushion bin so as to pump slurry from the air cushion bin to enable the slurry to flow into the central pipe; and the slurry discharging pipe is used for discharging sediments at the bottom of the aircushion bin outwards. According to the washing system and the construction method, the problem that the washing effect of cutterheads are difficult to guarantee is solved effectively, the washing system is improved, and the flow of the slurry can be guaranteed, so that the cleaning effects of the center of the cutterhead and other parts are improved, and potential safety hazards are reduced.

Description

technical field [0001] The invention relates to the field of shield tunneling, in particular to a flushing system for muddy water shield cutter heads and a construction method thereof. Background technique [0002] During the propulsion process of the ultra-large-diameter mud-water shield, the center of the cutter head becomes a high-risk area for mud build-up due to the weak flow of mud water at the center of the cutter head. The mud build-up in the center of the cutter head will cause the center of the cutter head to overheat and the torque of the cutter head will also increase. , causing potential safety hazards to shield tunneling, so a pipeline for flushing the center of the cutter head is specially set up in the mud water circulation system. [0003] At present, a branch pipe connected with the mud delivery pipe is generally installed at the center of the cutter head, and a water pump is installed on the branch pipe, and the water pump is used to pump part of the muddy...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art, provide a muddy water shield cutterhead flushing system and its construction method, solve the problem that the flushing effect of the muddy water shield is difficult to guarantee, and improve the flushing system to ensure the muddy water flow , so as to improve the cleaning effect at the center of the cutter head and other parts, and reduce potential safety hazards

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