Shield sludge cleansing/recycling/reusing system and method

A technology of shield tunneling and sludge, which is applied in the field of purification, recycling and reuse of shield tunneling sludge, can solve the problems of difficult processing and high construction costs, and achieve the effects of saving consumption, saving processing costs, and reducing raw material consumption

Active Publication Date: 2013-12-11
CHINA CONSTR COMM ENG GRP UNITED
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Problems solved by technology

[0006] In order to solve the problem that a large amount of sludge is produced in the current shield construction, which is difficult to deal with, and a large amount of

Method used

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  • Shield sludge cleansing/recycling/reusing system and method

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Embodiment 1

[0035] See attached figure 1 , Shield mud purification and recycling are reused in the synchronous grouting construction system, including a mud mixing tank 1 located near the ground slag bin of the shield tunnel 1, a mixer 2 located in the mud mixing tank; a mud pump located near the slurry mixing tank 14. Cyclone desander 3 installed near the mud pump, storage tank 4 installed at the synchronous grouting mortar mixing station of the shield, synchronous grouting mortar mixing station 5, connecting the slurry pipelines and installed at each The valve.

[0036] The implementation steps are as follows:

[0037] Step 1: Excavate a foundation pit with a length of not less than 10×5m and a depth of not less than 2m near the shield slag bin as a mud mixing tank 1;

[0038] Step 2: The gantry crane lifts the shield mud from the tunnel trolley and pours it into the mud mixing tank 1;

[0039] Step 3: Pour water into the mud pool and start the mud mixer 2 for mixing. After testing, the speci...

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Abstract

The invention discloses a shield sludge cleansing/recycling/reusing system and method. The system comprises a slurry mixing pool (1), a mixer (2), a cyclone desander (3), a slurry storage tank (4), a mortar mixing station (5), a waste dump (6) and a pipeline. The shield sludge cleansing/recycling/reusing system and method have the advantages that the sludge generated in shield construction is cleansed and recycled so as to be reused as the raw material of shield synchronous grouting, so that the problems of large sludge waste amount and pollution on environment in the shield construction in the past and the problem of large consumption amount of raw materials such as shield synchronous grouting bentonite are solved, and therefore, the utilization amount of the bentonite is saved, the pollution on the environment caused by the waste sludge is reduced and the shield construction cost is also decreased. The system and the method provided by the invention further are characterized in that slurry prepared according to the slurry preparation ratio according to the invention is used for synchronous grouting in the mortar mixing station, the performance and the quality of grouting are the same with the performance and the quality of grouting by using the bentonite slurry, and the requirements of the shield construction can be met.

Description

Technical field [0001] The invention relates to the technical field of shield construction, in particular to a system and method for purifying, recycling and reusing shield mud slag. Background technique [0002] As the most advanced large-scale special equipment for tunnel boring today, shield machine is a high-tech construction equipment that realizes tunneling, excavation, support and other excavation at one time. It is widely used in urban rail transit, railways, highways, municipalities, hydropower, etc. tunnel Engineering. [0003] During the construction of tunnel shield tunneling, the shield machine cuts the ground soil and produces a lot of mud. At present, this kind of sludge treatment is mainly transported to designated spoil grounds. The transportation volume is large, the space is large, it is easy to cause environmental pollution, and it is difficult to find a suitable spoil ground. The processing cost accounts for 10% of the shield tunnel cost about. In fact, if t...

Claims

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Application Information

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IPC IPC(8): E21D11/10E21D9/06
Inventor 邓美龙郭宏智郝本峰朱军军石小军邓少闻王利宁王翠莲吕波
Owner CHINA CONSTR COMM ENG GRP UNITED
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