Bentonite slurrying control system for shield construction and method

Abstract

The invention discloses a bentonite slurrying control system for shield construction. The bentonite slurrying control system for the shield construction comprises a liquid level detection module, a power source module, and a relay control module, wherein the liquid level detection module is used for detecting a liquid level of a stirring tank and outputting different signals according to a low liquid level of the stirring tank, a middle liquid level of the stirring tank, and a high liquid level of the stirring tank, the power source module supplies power to the liquid level detection module, and the relay control module is used for controlling working conditions of the stirring tank according to the different signals output by the liquid level detection module. The liquid level detection module is connected with the relay control module. The liquid level detection module comprises a metal liquid level meter connection sub-module, a high liquid level detection sub-module, and a middle and low liquid level detection sub-module. The invention further discloses a control method. Due to the fact that the bentonite slurrying control system for the shield construction and the control method are adopted, control to proportion and output of bentonite slurry in the full section non-water sand bed shield construction can be achieved, at the same time, soil flow ductility of shield muck can be improved, and abrasion degree of a shield cutter-disc is decreased.

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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