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PMS sludge prepn. method and its application in construction of sludge balance shield and pipe-jacking

A mud-water balance and mud-water shield technology, which is used in mining equipment, earth-moving drilling, tunnels, etc., can solve the problems of unfavorable and complex geological conditions, the advancing speed, the inability of the shield or pipe jacking machine to advance, and the poor strain capacity. The effect of mud loss, simultaneous grouting reduction, and low solids

Inactive Publication Date: 2005-01-12
上海第二市政工程有限公司
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Problems solved by technology

Causes serious environmental pollution, which is not conducive to facing complex geological conditions and increasing the speed of advancement, and has poor adaptability in solving complex situations during the advancement
When the mud-water shield enters the hard clay layer, pipe blockage will often occur, and in severe cases, it will cause pipe bursting, making the shield or pipe jacking machine unable to advance

Method used

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  • PMS sludge prepn. method and its application in construction of sludge balance shield and pipe-jacking
  • PMS sludge prepn. method and its application in construction of sludge balance shield and pipe-jacking
  • PMS sludge prepn. method and its application in construction of sludge balance shield and pipe-jacking

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Embodiment Construction

[0029] PMS (full name: Polymer-MMH Shield buriedtunneling Slurry System), the mud-water slurry preparation method is: add clear water 5 into the mixing tank 6, and start the shear pump 4, and the shear pump Add synergistic clay 1 or activated sodium bentonite to the feeding funnel, add large, medium and small polymers 2, and positively charged MMH positive gel product 3, and the shear pump circulates for 5 to 10 minutes to make ready for use . See figure 1 , the high molecular polymer is a high molecular polyacrylic acid salt, including polyacrylic acid (amide) amide (see the structural formula Figure 7 ), strong covering agent, compound ionic polyacrylic acid (acyl) salt. MMH positive gel is a mixed metal hydroxide solution (Mixed Metal Hydroxide).

[0030] The application of MPS mud-water slurry in mud-water balance shield tunneling and pipe jacking construction is carried out according to the following steps: the mud water is sent into the mud-water pressure chamber 11 ...

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Abstract

This is a preparing method of PMS mud and water paste and its application on the working of supporting pipe. Its features are: Use high polymer and positron glue to prepare PMS mud and water paste liquid. During this procession, to use soil mortar liquid separated grade by grade, in the mud paste mix PMS paste liquid and its assistant materials in proper time, and advance the six steps on the application.

Description

[0001] Technical field: The present invention belongs to the technical field of mud-water balance shield tunneling and pipe jacking construction, and is an application technology of mud-water balance shield tunneling and pipe jacking construction in underground excavation. Background technique: [0002] Mud-water balance shield tunneling and pipe jacking construction uses pipeline transportation instead of rails for continuous excavation, which speeds up underground excavation, improves working conditions and construction environment, and can better stabilize the excavation surface and prevent ground uplift. It has become an epoch-making shield today. And pipe jacking construction new technology. However, there are many deficiencies in this muddy water system. The prominent performances are the large amount of waste mud discharge, the difficulty in controlling the slurry indicators such as quality, specific gravity, viscosity, etc., the large land occupation of muddy water trea...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/12
Inventor 赵国强周善国杨继范
Owner 上海第二市政工程有限公司
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