Bentonite Slurry Control System for Shield Construction

Abstract

The invention discloses a bentonite pulping control system for shield construction, which includes a liquid level detection module for detecting the liquid level of a stirring tank and outputting different signals according to three liquid levels of the stirring tank, namely, low, medium and high. The power supply module powered by the liquid level detection module and the relay control module used to control the working state of the mixing tank according to the different signals output by the liquid level detection module, the liquid level detection module is connected to the relay control module , the liquid level detection module includes a metal liquid level gauge connection sub-module, a high liquid level detection sub-module and a medium-low liquid level detection sub-module. The invention also discloses a control method. The present invention adopts the above-mentioned bentonite pulping control system for shield tunneling, which can realize the ratio and output control of bentonite slurry in the construction of full-section anhydrous sand layer shield, and can improve the flow plasticity of shield dregs and reduce the amount of shielding. The degree of wear of the cutter head.

Description

technical field [0001] The invention relates to the field of shield tunneling, in particular to a bentonite pulping control system and method for shield tunneling. Background technique [0002] With the rise of domestic urban subway construction, shield tunnel construction has become the first choice for subway tunnel construction, and this construction method is being vigorously advocated in China, especially in the full-section anhydrous sand layer. The advantages of shield tunnel construction are more obvious . During the construction of full-section shield tunneling in an anhydrous sand layer, in order to control the flow plasticity of the slag generated during the construction process and reduce the wear of the shield cutter head, the construction personnel need to prepare bentonite slurry. At present, the preparation of bentonite slurry is mostly prepared by manual mixing. Due to the limitation of manual operation, the proportioning quality and slurry output of benton...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a bentonite pulping control system and method for shield construction, which can realize the ratio and output control of bentonite slurry in the construction of full-section anhydrous sand layer shield, and solve the problems caused by artificial preparation of bentonite slurry. The quality of the incoming slurry is unstable, and the output of the slurry cannot be guaranteed. At the same time, it can improve the flow plasticity of the shield dregs and reduce the wear of the shield cutter head.

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