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

A mud-water balance and mud-water technology, applied in chemical instruments and methods, mining equipment, earthwork drilling and mining, etc., can solve the problems of unfavorable and complicated geological conditions, the advancement speed of shield tunneling or pipe jacking machines, and poor adaptability, etc., to achieve Reduce the amount of mud loss, reduce the amount of synchronous grouting, and the effect of low solid phase

Inactive Publication Date: 2009-06-24
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 preparation method and its application in construction of sludge balance shield and pipe-jacking
  • PMS sludge preparation method and its application in construction of sludge balance shield and pipe-jacking
  • PMS sludge preparation method and its application in construction of sludge balance shield and pipe-jacking

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Embodiment Construction

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

[0030] The application of PMS mud-water slurry in mud-water balance shield tunneling and pipe jacking construction is carried out in the following steps: the mud water is sent into the mud-water press...

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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. yes 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 treatm...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/12C09K8/04
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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