Non-frozen shield mud for shield freezing method and application method thereof

A technology of freezing method and shield mud powder, which is applied in the fields of chemical instruments and methods, applications, earth drilling and mining, etc., can solve the problems of frozen stickiness between the cutter head of the shield machine and the frozen soil, which affects the construction progress, and achieves safety. The effect of efficient tool change operations

Inactive Publication Date: 2020-09-22
湖南中天凿岩科技有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] The invention provides a non-freezing shield mud for shield freezing method and its use method. It is necessary to solve the problem that the cutter head of the shield tunneling machine and the frozen soil are frozen and stuck to the frozen soil during the opening operation of the existing shield tunnel freezing method, which requires labor and labor. Excavating a tool change operation space that is the same size as the diameter of the shield machine cutter head requires setting up scaffolding, which affects the construction progress and other issues

Method used

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  • Non-frozen shield mud for shield freezing method and application method thereof
  • Non-frozen shield mud for shield freezing method and application method thereof
  • Non-frozen shield mud for shield freezing method and application method thereof

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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] Such as figure 1 As shown, when the present invention is not used, the solidification point of the soil around the shield machine cutter head 1 is relatively high, and it is easy to freeze with the shield machine cutter head 1 to form a whole frozen sticky body, the shield machine cutter head 1 cannot rotate, and the undisturbed soil is frozen. Difficulty in manual excavation.

[0037] Such as figure 2 As shown, when using the present invention, ther...

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Abstract

The invention provides a non-frozen shield mud for a shield freezing method and an application method thereof. The non-frozen shield mud for the shield freezing method is composed of clay minerals, water and a clay antifreezing agent and comprises non-frozen shield mud I and non-frozen shield mud II. By using the shield mud, a condition that a cutterhead of a shield tunneling machine, a shield body of the shield tunneling machine and a frozen soil mass are frozen and adhered when an opening operation by the shield freezing method can be achieved, and the whole tool changing operation can be finished by excavating the frozen soil mass which is only 1/2 of that of a conventional construction method without arranging a scaffold, so that safe and efficeint tool changing operation is achieved.

Description

technical field [0001] The invention belongs to the technical field of shield tunneling engineering, and in particular relates to a non-freezing shield mud for shield freezing method and a use method thereof. Background technique [0002] With the rapid development of my country's urban subway construction, the shield method has been widely used for its advantages of high efficiency, safety and environmental protection. However, when the shield machine is excavated for a long distance, tool wear is particularly prominent, and tool replacement has also become a major issue in shield tunneling construction. In strata with abundant groundwater and poor stability of surrounding rock and soil, the safer freezing method is often used for tool change After freezing the soil around the shield body and cutter head, open the warehouse and change the tool. However, because the freezing method will freeze the shield machine cutterhead and the surrounding soil firmly, it is necessary to...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/08E21D11/38E21D9/00C09K17/08C09K103/00
CPCC09K17/08C09K2103/00E21D9/001E21D9/08E21D11/38
Inventor 王清平张岩涛陈馈
Owner 湖南中天凿岩科技有限公司
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