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Waste soil modifier capable of guaranteeing that shield tunneling machine smoothly tunnels in conglomerate layer with boulders

A technology of muck soil improvement and shield machine, which is applied in the direction of organic fertilizer, building structure, soil conditioning materials, etc. It can solve the problem that there is no corresponding selection and proportion of muck soil improvement materials, and the cutter cannot cut the soil in front, and the cutter head , tool wear and other issues, to achieve the effect of shortening the construction period, reducing replacement, and ensuring safe operation

Inactive Publication Date: 2013-06-05
北京城建设计发展集团股份有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The clastic components in the conglomerate are mainly rock debris, only a small amount of mineral debris, and the interstitial materials are sand, silt, clay substances and chemical precipitation substances. There is no corresponding selection and ratio, and the wear of the cutter head and the cutter is very serious in the ground, which may easily cause the cutter to be unable to cut the soil in front due to severe wear, resulting in downtime

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A kind of muck improver for ensuring the smooth excavation of a shield machine in a conglomerate layer containing boulders, the dreg improver is composed of sodium-based bentonite slurry, foam solution and shield grouting agent; the mass parts are sodium-based 40 parts of bentonite slurry, 50 parts of foam solution and 3 parts of shield slurry;

[0010] The sodium-based bentonite slurry is composed of sodium-based bentonite and water, and its mass parts are 40 parts of sodium-based bentonite and 90 parts of water; its consistency is 30s;

[0011] The foam solution is composed of foam puree and water, the parts by mass of which are 0.5 part of foam puree and 95 parts of water.

Embodiment 2

[0013] A kind of muck improver for ensuring the smooth excavation of a shield machine in a conglomerate layer containing boulders, the dreg improver is composed of sodium-based bentonite slurry, foam solution and shield grouting agent; the mass parts are sodium-based 55 parts of bentonite slurry, 70 parts of foam solution and 5 parts of shield slurry;

[0014] The sodium bentonite slurry is composed of sodium bentonite and water, and its mass parts are 55 parts of sodium bentonite and 95 parts of water; its consistency is 35s;

[0015] The foam solution is composed of foam puree and water, the parts by mass of which are 1.5 parts of foam puree and 100 parts of water.

Embodiment 3

[0017] A kind of muck improver for ensuring the smooth excavation of a shield machine in a conglomerate layer containing boulders, the dreg improver is composed of sodium-based bentonite slurry, foam solution and shield grouting agent; the mass parts are sodium-based 50 parts of bentonite slurry, 60 parts of foam solution and 4 parts of shield slurry;

[0018] The sodium bentonite slurry is composed of sodium bentonite and water, and its mass parts are 48 parts of sodium bentonite and 92 parts of water; its consistency is 33s;

[0019] The foam solution is composed of foam puree and water, the mass parts of which are 1 part of foam puree and 99 parts of water.

[0020] The muck improver, which ensures the smooth excavation of the boulder-containing conglomerate layer by the shield machine, is fully mixed at room temperature, and then dispersed into the front of the cutter head to effectively improve the boulder-containing conglomerate layer; among them, the foam It reduces th...

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PUM

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Abstract

Disclosed is a waste soil modifier capable of guaranteeing that a shield tunneling machine smoothly tunnels in a conglomerate layer with boulders. The waste soil modifier is composed of sodium bentonite mud, foam solution and a shield slurrying agent, and the mass parts are respectively 40-55 parts of the sodium bentonite mud, 50-70 parts of the foam solution and 3-5 parts of the shield slurrying agent. The waste soil modifier can not only ensure that the shield tunneling machine smoothly tunnels but also reduce abrasion of a cutter disc, abrasion of a cutter, and replacing of the cutter, and accordingly cost is reduced, time limit for a project is shortened and safety construction of the project is guaranteed.

Description

technical field [0001] The invention relates to the spare parts of building construction technology, and especially designs a muck modifier for ensuring the smooth excavation of a shield machine in a conglomerate layer containing boulders. Background technique [0002] In building construction, it is often necessary to excavate in conglomerate layers containing boulders. The boulder-containing conglomerate layer is a semi-cemented to weakly cemented rock layer with strong weathering. The cement is mainly composed of clay group, and some parts are fine sand; it is easy to break. According to the survey, boulders with a diameter of more than 1000m and a strength of more than 300Mpa, at least 4 boulders with a particle size of more than 800mm and a particle size of There are at least 2 boulders with a diameter of 1000mm or more, and the largest particle size has been found to be 1500×1700mm. The clastic rocks in which round and sub-round gravels with a particle size greater t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/00C09K103/00
Inventor 恽军杨金钟车凯
Owner 北京城建设计发展集团股份有限责任公司
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