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Shield muck on-site disposal and resource recovery system and method

An on-site treatment and recycling technology, applied in solid waste removal, cement production, etc., can solve problems such as increased construction costs and rising sand prices, and achieve the effects of reduced moisture content, less impurities, and high application value

Pending Publication Date: 2019-06-11
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, river sand has been indispensable for building houses, whether in rural or urban areas, but in recent years, sand mining activities have been banned in most parts of our country, which has led to an increase in the price of sand and stone in the market and increased construction costs

Method used

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  • Shield muck on-site disposal and resource recovery system and method

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Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 As shown in the figure, a system for on-site treatment and resource utilization of shield tunneling residue includes a mud tank 2, a mud adjustment tank 3, a filter press 4, and a sand washing machine 1 for eluting and screening shield tunneling residue , wherein the mud liquid output port of the sand washing machine 1 is connected with the mud liquid input port of the mud tank 2, the mud liquid output port of the mud tank 2 is connected with the mud liquid input port of the mud adjustment tank 3, and the remaining sludge of the mud adjustment tank 3 The output port is connected with the remaining sludge input port of the filter press 4; the sand washing machine 1, the mud adjustment tank 3 and the filter press 4 are arranged above the mud tank 2, and the mud tank 2 is arranged below the ground surface of the construction site. The system for on-site treatment and resource utilization of shield tunneling muck in the present invention, by optimizing the ...

Embodiment 2

[0047] A method for on-site treatment and recycling of shield dregs, using the system for on-site treatment and recycling of shield dregs in Embodiment 1 of the present invention to process shield dregs, comprising the following steps:

[0048] (1) Sand washing: use the mud inlet pump 12 to send the shield excavated by the shield machine (with a sand content of 30% to 70%) into the washing tank of the sand washing machine 1 through the shield mud conveying pipe 11 , control the speed at 1.5r / min, roll under the drive of the impeller, and grind each other, remove the impurities covering the surface of the sand in the slag, destroy the water vapor layer covering the sand, and facilitate dehydration; add water at the same time to form a strong water flow, Impurities and foreign objects with small specific gravity are taken away in time to complete the cleaning function, and the processing capacity is 45t / h. The clean gravel and fine sand are taken away by the blades, and finally ...

Embodiment 3

[0053] A method for on-site treatment and recycling of shield dregs, using the system for on-site treatment and recycling of shield dregs in Embodiment 1 of the present invention to process shield dregs, comprising the following steps:

[0054] (1) Sand washing: use the mud inlet pump 12 to send the shield excavated by the shield machine (with a sand content of 30% to 70%) into the washing tank of the sand washing machine 1 through the shield mud conveying pipe 11 , control the speed at 2r / min, roll under the drive of the impeller, and grind each other, remove the impurities covering the surface of the sand in the muck, destroy the water vapor layer covering the sand, and facilitate dehydration; add water at the same time to form a strong water flow, timely Take away impurities and foreign objects with small specific gravity to complete the cleaning function, with a processing capacity of 50t / h. The clean gravel and fine sand are taken away by the blades, and finally the crush...

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Abstract

The invention discloses a shield muck on-site disposal and resource recovery system and method. The system comprises a sand washer, a mud ditch, a mud adjustment tank and a pressure filter, wherein amud liquid output port of the sand washer communicates with a mud liquid input port of the mud ditch, a mud liquid output port of the mud ditch communicates with a mud liquid input port of the mud adjustment tank, and an excess sludge output port of the mud adjustment tank communicates with an excess sludge input port of the pressure filter; the sand washer, the mud adjustment tank and the pressure filter are arranged above the mud ditch; and the mud ditch is formed below the earth surface of a construction site. The method comprises the steps of washing and screening shield muck, adjusting mud, and pressing and filtering excess sludge. The system has the advantages of simple structure, stable operation, long service life, small occupied area, strong operability, etc. and has high application value and a good application prospect. The application method of the system can furthest realize the stabilization, reduction and harmless and resource utilization of the shield muck, and the application prospect is good.

Description

technical field [0001] The invention belongs to the field of solid waste reuse, and in particular relates to a system and method for on-site treatment and resource utilization of shield tunneling dregs. Background technique [0002] With the rapid development of the national economy, the pressure on modern urban traffic is increasing, prompting the rapid development of urban subways. Now, the subway construction is mainly based on the shield tunnel construction. In the construction of the shield subway tunnel, due to the addition of a large amount of water, bentonite, foam and other additives, the water content in the excavated dregs is relatively large, and the transportation of the dregs is very difficult. It has become the most troublesome problem for city managers and construction units. If the muck with a high water content is directly loaded and transported outside, the dregs will overflow along the road during transportation, which will have a very bad impact on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00C04B7/24C04B7/38
CPCY02P40/10
Inventor 袁兴中彭颖蒋龙波张进曾光明
Owner HUNAN UNIV
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