Dual-mode screening rotational flow method for shield construction muck treatment

Abstract

The invention discloses a dual-mode screening rotational flow method for shield construction muck treatment. A first mode or a second mode is selected according to the treatment amount of shield muck.If a large amount of the muck needs to be treated, the treatment speed of the muck is not smaller than 360m<3> / h, and the first mode needs to be selected. Otherwise, the second mode is selected. In the first mode, two primary screening devices are arranged and are further in parallel connection for treatment of the muck, a rotational flow base solution obtained by rotational flow is subjected tosand washing treatment directly, and the needs produced when the amount of the shield muck is large and the treatment effect requirement for the muck is low can be well met. In the second mode, one primary screening device and one secondary screening device are arranged and are further in series connection for treatment of the muck, the rotational flow base solution obtained by the rotational flowis subjected to secondary screening, find sand is obtained and finally subjected to sand washing treatment, and the needs produced when the amount of the shield muck is small and the treatment effectrequirement is high are met.

Description

technical field [0001] The invention belongs to the technical field of shield tunneling dregs treatment, in particular to a double-mode screening swirling method for shield tunneling construction dregs treatment. Background technique [0002] Shield machines are widely used in urban subway construction due to factors such as safety, high construction efficiency, low cost, and wide application of strata. The slag contains a lot of water and is even in a semi-fluid state. At present, the slag produced by shield tunneling is mostly treated by direct transportation. However, directly transporting the slag to landfill will pollute the environment, and the slag A large number of available resources in the soil are wasted, so it is necessary to deal with the shield construction dregs. [0003] Since the strata that the shield machine crosses are often complex, the nature of the shield dregs produced by excavation is unstable. For different types, different amounts of shield dregs ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the lack of methods in the prior art for treating shield tunneling dregs with different quantities and different treatment effects, the present invention provides a dual-mode screening cyclone system for shield tunneling construction dregs treatment, the purpose of which is to: provide The two modes deal with different amounts of shield muck and produce different treatment effects

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