Shield muck treatment method and equipment

Abstract

The invention discloses a shield muck treatment method and equipment. The method comprises the steps that stones, sand and mud in the muck transported out in the shield construction process are subjected to vibrate separation under impact of water, the separated big sand is accumulated concentratedly through conveying equipment, meanwhile the separated thin sand and mud mixture is subjected to twisting separation, the thin sand is discharged, the separated mud is subjected to one flocculation treatment through a flow guiding tank or pipe, the mud subjected to flocculation treatment settles ina mud pool so as to separate mud and clear water, the clear water is drained into a clear water pool to serve as construction recycling water, the mud is pumped into a con ave-convex mud conveying pipe to be subjected to second flocculation treatment, and the mud subjected to second flocculation treatment is sent into a belt filter press to obtain dry mud cakes. The solid-liquid separation effectof the equipment is good, the automation degree is high, shield construction water is recycled, cleaning water for externally transported mud is greatly reduced, water is saved by50% or above in the whole construction process, and city pollution brought by external transportation of shield muck is thoroughly solved.

Description

technical field [0001] The invention belongs to a method and equipment for treating dregs of shield tunneling. Background technique [0002] With the rapid development of social economy, the construction of urban rail transit has become an important part of urban infrastructure construction. At the same time, a variety of environmental protection problems brought about by the construction of rail transit have always been a long-standing problem that plagues the government and construction parties. Among them, how to deal with the large amount of muck generated by shield tunneling construction is an important issue. Since the muck produced by shield tunneling has the characteristics of high mud content and high water content, leakage will inevitably occur during transportation, which will cause certain pollution to the environment. In order to clean up the soil in time, a large amount of cleaning water is consumed during transportation. In some cases, due to the inability t...

AI Technical Summary

Problems solved by technology

Due to the characteristics of high mud content and high water content in the muck produced by shield tunneling, leakage will inevitably occur during transportation, causing certain pollution to the environment

In order to clean up the soil in time, a lot of cleaning water is consumed during transportation

In some cases, due to the failure to solve the urban road pollution caused by the muck transported out in time, there will also be the problem that the shield construction is blocked due to the muck not being transported out in time

Although the existing technology also uses some solid-liquid separation equipment to separate sand and mud, the effect still needs to be further improved

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