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Treatment method for slurry circulation in shield tunneling

A treatment method and mud technology, applied in earthwork drilling, mining equipment, tunnels, etc., can solve problems that affect the progress of the construction period, and achieve the effects of saving construction period, clearing blockage, and avoiding risks

Active Publication Date: 2007-07-11
CHINA TUNNEL CONSTR GUANGDONG
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Problems solved by technology

It usually takes 2-3 days to open the warehouse. If ground reinforcement is required, the construction period will be more than 1 month, which will seriously affect the progress of the construction period.

Method used

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  • Treatment method for slurry circulation in shield tunneling

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Embodiment Construction

[0012] As shown in Figures 1 to 2, the treatment method for mud circulation in shield tunneling according to the present invention comprises the following steps:

[0013] (1), in the whole mud-water conveying system, in order to better control the mud pressure in the mud-water bin 11, the mud-feeding pipe is set as a 10-inch pipe, and the mud-discharging pipe is an 8-inch pipe. The pressure sensor in 11 directly transmits the mud pressure value in the mud tank 11 to the central control room, so as to detect whether the mud pressure in the mud tank 11 suddenly rises sharply to judge whether the slurry outlet 14 is blocked, such as If the slurry outlet 14 is blocked, go to step 3, otherwise

[0014] (2) Start the shield tunneling machine 1 to operate in the positive circulation mode of mud. At this time, the hydraulic solenoid valve I, pneumatic solenoid valve II, and pneumatic solenoid valve III are closed, and the pneumatic solenoid valve IV and pneumatic solenoid valve V are ...

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Abstract

The invention relates to a slurry circulation treatment method in shield tunneling, comprising following procedures that detecting and estimating if the draining port is jammed, starting the shield tunneling machine to run the sand slurry in positive cycling method if the draining port is not jammed, or starting the shield tunneling machine to rung the sand slurry in reversed cycling method. In the invention, because the reversed cycling method for sand slurry is used to chisel the jam of draining port skillfully, it is provided with simple and easy operation, quick speed and high efficiency. It can save the construction period and can avoid the risky character existing when opening storehouse. It can make the tunneling machine move as it chisels abnormal objects so that it provides better safeguard for controlling the construction period.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a treatment method for mud circulation in a shield tunneling device. Background technique [0002] In many construction fields that require slurry shield engineering, in the past, when the slurry outlet of the slurry tank was blocked, it was necessary for the staff to manually open the gate to the slurry tank for manual cleaning of foreign objects. This operation method is called To open a position. The opening operation takes a long time and involves high risks, and the shield machine needs to be stopped; if the geological conditions are harsh, it is necessary to carry out foundation reinforcement construction from the ground, which greatly increases the project cost. It usually takes 2-3 days to open the warehouse. If ground reinforcement is required, the construction period will be more than 1 month, which will seriously affect the progress of the construction period. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/13
Inventor 王小军何伦朱劲峰邵孟新陈锦云
Owner CHINA TUNNEL CONSTR GUANGDONG
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