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Shield muck sand-making recycling method

A muck and shield technology, which is applied in the field of shield muck making and sand recycling, can solve the problems of water pollution, occupation, landslides, landslides, etc.

Inactive Publication Date: 2021-05-18
CHINA RAILWEY ENG SERVICE CO LTD
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Problems solved by technology

[0003] At present, the treatment method for the shield muck is to directly transport it to the storage yard. Due to the high water content of the shield muck, the transportation efficiency of this method is low, and it is easy to pollute the road during the transportation process, and a large number of subway constructions are expensive The accumulation of water-containing dregs will waste a lot of land resources and occupy large-scale cultivated land. The accumulation of water-containing dregs is unstable, that is, landslides, landslides and other disasters will occur, and it is also one of the main pollution sources of dust pollution, and the liquid leaching of dregs will cause Serious pollution of water resources near the storage yard

Method used

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  • Shield muck sand-making recycling method
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Embodiment Construction

[0038] All features disclosed in this specification, or steps in all methods or processes disclosed, can be combined in any way, except for mutually exclusive features and / or steps.

[0039] Combine below figure 1 , figure 2 The present invention will be described in detail.

[0040] A method for recycling sand made from shield excrement, comprising the following steps:

[0041] Step A: screen the shield muck after leaving the well;

[0042] Step B: Screening to obtain coarse sand and screened mud, crushing the coarse sand, and washing the screened mud;

[0043] Step C: Crushing to obtain primary fine sand, washing the sand to obtain primary fine sand and sand washing slurry, dehydrating the primary fine sand to obtain finished fine sand and dewatered slurry, storing the finished fine sand, and spinning the sand washing slurry and dewatered slurry flow;

[0044]Step D: swirling to obtain sandy underflow and swirling mud, washing the sandy underflow again, and flocculatin...

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Abstract

The invention discloses a shield muck sand-making recycling method, belongs to the technical field of shield construction, and solves the problem that the shield muck treatment and recycling effect is not ideal in the prior art. By means of the method, the shield muck is sequentially subjected to screening, sand washing, rotational flow, secondary sand washing, flocculation, filter pressing, flocculation and the like to obtain coarse sand, fine sand, mud cakes and water, the requirements of material reutilization and outward transportation are met, reduction transportation, environment-friendly treatment and resource utilization of the shield muck are achieved, and the method has the characteristics of integrated arrangement, modular installation, industrial production and intelligent control. The method is high in adaptability, has multi-stage configuration, multi-stage accessories and multiple arrangement forms, and can meet the requirements of different projects on the handling capacity, the handling capacity, the site arrangement and the geological conditions.

Description

technical field [0001] The invention belongs to the technical field of shield tunneling, in particular to a recycling method for making sand from shield tunneling dregs. Background technique [0002] With the vigorous construction of cities, the development of urban-rural integration, and the construction of urban tunnels and subways, a large amount of shield muck, construction waste, and shield muck production have increased significantly during the construction process. The number and storage capacity of the existing treatment facilities can no longer meet the requirements for the disposal of shield dregs, construction waste, and shield dregs at the present stage, and the phenomenon of illegal spoils still exists. In order to solve the sharp increase in the output of urban shield muck, the number and storage capacity of existing treatment facilities are insufficient, and the disposal of urban shield muck has become a difficult problem at this stage. [0003] At present, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/00B03B7/00B02C21/00C02F9/02B03B11/00
CPCB02C21/00B03B7/00B03B9/00B03B11/00C02F1/001C02F1/38C02F1/52C02F9/00
Inventor 高旭东李恒刁鹏邓涛韩彦朋周鸿雏熊建春郭涛
Owner CHINA RAILWEY ENG SERVICE CO LTD
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