A construction method for anti-seepage walls in formations containing entanglements or in garbage grounds

Abstract

A construction method for a cut-off wall on a stratum containing entanglements or a rubbish ground, including two cutting and excavation operations in succession, during the first cutting and excavation operation, the entanglements at the baseline position of the cut-off wall are removed, and the unstable stratum is Solidify to create conditions for the second excavation operation; the second cutting excavation operation directly forms a wall in the cured area. The invention is a construction method for anti-seepage walls in formations containing entanglements or garbage grounds. The construction of cut-off walls is directly completed in unstable strata.

Description

technical field [0001] The invention belongs to the technical field of building construction, and relates to a construction method for an anti-seepage wall on a stratum containing entanglements or a rubbish ground stratum. Background technique [0002] From the 1980s to the 1990s, due to the relatively backward domestic waste treatment technology and lack of awareness of environmental protection, domestic waste and construction waste in many areas were directly buried in abandoned river ponds without classification and anti-seepage treatment. , depressions and other landfills. Today, although the garbage in the above-mentioned landfills has been naturally degraded for a long time and tends to be stable, but because the above-mentioned landfills are mostly abandoned river ponds and depressions, once a large amount of rainfall seeps into the stratum where the garbage in the landfill is located, it will lead to waste pollution. The exudate spreads into the surrounding soil, an...

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Problems solved by technology

However, if this patented method is directly applied to the above-mentioned landfill, there will be the following problems: one, because the landfill has a small soil content, poor layers, and large pores, the waste formation is extremely unstable and seepage The slurry is easily lost from the pores of the garbage layer. When milling and down-stirring, the amount of grout sprayed by the milling wheel alone cannot meet the loss of seepage slurry, resulting in a huge amount of grouting, and the wall cannot be agitated down to form a wall; Garbage usually contains a large number of plastic bags, cloth balls, snakeskin bags, cables and other strips or sheet-shaped windings. On the one hand, the windings are easily wrapped around the milling wheel, causing the milling wheel to fail to work normally. On the one hand, when the milling wheel is lifted for cleaning, the milling wheel will take the entanglement and the garbage wrapped in the entanglement out of the ground, resulting in a larger cavity in the ground, resulting in a large loss of slurry, and in severe cases, the groove wall will collapse and cannot form a groove. Even safety accidents such as buried drilling

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