Vacuum tightness technique for soil and film

Abstract

The invention belongs to the vacuum sealing method 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. According to the vacuum sealing method of soil and film in the present invention, firstly, the area to be treated is sealed and anti-seepaged on the periphery according to the needs, then the drainage board is inserted, the vacuum system is laid, and the sealing film is laid after the surface is leveled and cleaned. Then blow fill the mud seal layer to carry out compound sealing, and finally carry out vacuum preloading. The invention reduces the engineering quantity of the thin-layer mud seal layer, lowers the soil quality requirements for the thin-layer mud seal layer, and has looser requirements on the material of the sealing film, and the sealing effect of the entire sealing film is more reliable, and does not require a film-pressed sealing ditch .

Description

technical field [0001] The invention belongs to the vacuum sealing method 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, and...

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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