Muck improvement method

Abstract

The invention relates to the technical field of muck improvement, in particular to a muck improvement method. The muck improvement method comprises the following steps of determining the property of muck to be improved, and determining the adding amount and foaming parameters of a foaming agent and the injection amount and mixing ratio of bentonite according to the property of the muck to be improved; based on the adding amount of the foaming agent and the foaming parameters, adding water into a mixing and stirring barrel, starting a stirring device to stir a solution in the mixing and stirring barrel, guiding the adjusted foaming agent into a foam generator, conveying the adjusted foam to a cutterhead through the foam generator, and mixing the muck and the foaming agent through a rotary stirring device of a cutter head. based on the injection amount and the mixing ratio of the bentonite, adjusting the viscosity of the bentonite, controlling a bentonite pump to convey the adjusted bentonite into a soil bin of a shield tunneling machine, and mixing the muck and the bentonite through a grinding and stirring device arranged in the soil bin. The muck improvement method has the effect that the defect that the muck improvement efficiency is low is overcome.

Description

technical field [0001] The present application relates to the technical field of muck improvement, in particular to a dreg improvement method. Background technique [0002] Muck improvement is an indispensable and most important technical means to ensure safe, smooth and rapid shield tunneling construction. [0003] The existing muck improvement method is to use foam, mud, water and other modifiers to improve the muck on the cutter head or the soil bin, which can basically meet the muck improvement of the shield machine under weak and single geological conditions. However, in complex formations such as mudstone, argillaceous siltstone, viscous dehydration, and uneven hardness and softness, due to the influence of geology and hydrology, the rock blocks become debris and powder under the cutting of the tool and the impact of the cutterhead. The improvement effect of the slag is poor, and at the same time, the slag is prone to mud cake phenomenon under the extrusion condition ...

AI Technical Summary

Problems solved by technology

[0004] In order to improve the defect of low improvement efficiency of slag soil, the application provides a method of slag soil improvement, adopting the following technical scheme:

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