Vacuum tightness technique for soil and film

Abstract

The present invention belongs to vacuum closed technology in many projects of loading or forced drainaging by vacuum technology, solidified soft soil foundation treatment and sludge (or slag soil) soil making treatment. Said soil and film party-vacuum sealed technology in the invention, first sealing and impervious treatment on the perimeter of to be processed area according requirement, then inserting and beating dewatering plate and laying vacuum system, laying sealing membrane after the surface is cleaned up and graded, then dredger filling the soil-sealing layer and composed sealing, last evacuating and prepressing. The invention reduces the project quantities of thin layer soil sealing layer, reduces the soil requirements of the thin layer soil sealing layer, the material requirements of sealing film is wider, and the sealing role of total sealing film is more reliable, and it does not need diaphragme sealing groove.

Description

technical field [0001] The invention belongs to the vacuum airtight technology in projects such as loading by vacuum technology or forced drainage by vacuum technology, consolidated soft soil foundation treatment, sludge (or slag) soil making treatment and the like. Background technique [0002] At present, there are two common methods of vacuum sealing technology in China, such as using vacuum technology to load or use vacuum technology to force drainage, consolidated soft soil foundation treatment, and mud (or muck) to make soil, etc.: [0003] 1. Sealing film sealing technology [0004] Sealing film airtight technology is to use vacuum technology to load or use vacuum technology to force drainage and consolidation of soft soil foundation treatment, silt (slag) soil and other projects, according to needs, first carry out necessary sealing and anti-seepage treatment on the surrounding area, and then Insert the drainage board, lay out the vacuum system, lay the sealing film...

AI Technical Summary

Problems solved by technology

[0005] (1) The sealing film is exposed to the outside, easily damaged by external force, and easily damaged by aging due to sun exposure, so the quality requirements for the sealing film are relatively high

[0006] (2) A large area of ​​sealing film needs to be spliced. There are many seams, and there may be many defects, which will cause air leakage and affect the sealing effect.

[0007] (3) The material requirements of the sealing film are high and the cost is high

[0008] (4) The construction work of the pressure film sealing ditch of the sealing film is large, and gaps will be formed due to different settlements, resulting in air leakage

[0012] (2) After the engineering treatment is completed, the post-treatment of the mud seal layer is mainly solved by natural sunlight or turning over the sun, which affects the construction period and the amount of post-treatment of the mud seal layer is relatively large

[0013] (3) Affected by the position of the mud outlet, the sedimentation characteristics of the soil particles, the uneven mud surface under the mud seal layer, the thickness of the mud layer and the uneven settlement of the mud layer, the uneven thickness of the mud seal layer, uneven particles, staggered fractures, etc. Sealing effect of mud seal layer

[0014] (4) According to practice, the degree of vacuum formed by sealing with mud seal layer is lower than the degree of vacuum formed by sealing with sealing film with good construction quality

[0015] If the treatment area needs to be dammed, the amount of damming may also increase

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