Muck modifier guaranteeing smooth tunneling of shield tunneling machine

A technology of muck soil improvement and shield machine, which is applied in the direction of organic fertilizers, building structures, soil conditioning materials, etc. It can solve the problems that the tool cannot cut the soil in front, tool wear, and shutdown, so as to shorten the construction period and ensure safe operation. , cost reduction effect

Inactive Publication Date: 2013-05-15
BEIJING URBAN CONSTR DESIGN & DEV GRP CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no corresponding selection and proportion of the muck improvement materials, and the stratum wears the cutter head and the cutter very seriously, 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

[0010] A slag modifier for ensuring the smooth excavation of a shield machine, the slag modifier is composed of sodium-based bentonite slurry, foam solution and shield slurry making agent; the mass parts are 30 parts of sodium-based bentonite slurry, foam solution 60 parts, 0.7 parts of high molecular polymer and 4 parts of shield slurrying agent;

[0011] The sodium-based bentonite slurry is composed of sodium-based bentonite and water, and its mass parts are 50 parts of sodium-based bentonite and 92 parts of water; its consistency is 80s;

[0012] The foam solution is composed of foam puree and water, and its mass parts are respectively 1 part of foam puree and 97 parts of water;

[0013] High-molecular polymer (a hydrophilic substance that becomes viscous after dilution, the purchased finished product, the manufacturer is Bafus in Jining or Hedongshuang in Beijing, etc.), composed of high-molecular polymer and water, its quality The parts are respectively 5 parts of high m...

Embodiment 2

[0015] A slag improving agent for ensuring the smooth excavation of a shield machine, the slag improving agent is composed of sodium bentonite slurry, foam solution and shield grouting agent; the parts by mass are 1 part of sodium bentonite slurry, foam solution 50 parts, 0.5 parts of high molecular polymer and 3 parts of shield slurrying agent;

[0016] 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 60s;

[0017] The foam solution is composed of foam puree and water, and its mass parts are respectively 0.5 parts of foam puree and 95 parts of water;

[0018] The high-molecular polymer is composed of high-molecular polymer and water, and its mass parts are respectively 10 parts of high-molecular polymer and 1000 parts of water.

Embodiment 3

[0020] A slag modifier for ensuring the smooth excavation of a shield machine, the slag modifier is composed of sodium-based bentonite slurry, foam solution and shield grouting agent; the parts by mass are 60 parts of sodium-based bentonite slurry, foam solution 70 parts, 1 part of high molecular polymer and 5 parts of shield slurrying agent;

[0021] 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 100s;

[0022] The foam solution is composed of foam puree and water, and its mass parts are respectively 1.5 parts of foam puree and 100 parts of water;

[0023] The high molecular polymer is composed of high molecular polymer and water, and its mass parts are respectively 3 parts of high molecular polymer and 900 parts of water.

[0024] The muck improver that ensures the smooth excavation of the shield machine is fully mixed at room temperature, and then distribut...

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PUM

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Abstract

The invention discloses a muck modifier guaranteeing smooth tunneling of a shield tunneling machine. The muck modifier consists of sodium bentonite slurry, foam solution and shield slurrying agent, wherein the amount of the sodium bentonite slurry is 0-60 parts by mass, the amount of the foam solution is 50-70 parts by mass, the amount of high-molecular polymer is 0.5-1 part by mass, and the amount of the shield slurrying agent is 3-5 parts by mass. The muck modifier disclosed by the invention not only can ensure smooth tunneling of a shield tunneling machine, but also can reduce the abrasion of cutter and tool as well as the replacement of tool so as to lower the cost, shorten the construction period and guarantee safe operation of an engineering.

Description

technical field [0001] The present invention relates to the technical field of building construction, and is specially designed to ensure that the shield machine can encounter boulders with a diameter of more than 1000m and a strength of more than 300Mpa, and encounter at least 4 boulders with a particle size of 800mm or more and a particle size of 1000mm or more in each tunnel excavation. At least 2 pieces of boulders, which have been found to have a maximum particle size of 1500×1700mm, are successfully excavated on the transitional section between the water-rich boulders and conglomerate layers. Background technique [0002] In building construction, it is often necessary to carry out excavation construction in various strata. The transitional section between the water-rich pebble boulder and the conglomerate layer is one of the construction surfaces. The conglomerate layer is a semi-cemented to weakly cemented rock formation, strongly weathered. The cement is mainly co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K103/00
Inventor 车凯朱伟李乾斌
Owner BEIJING URBAN CONSTR DESIGN & DEV GRP CO
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