Method for processing soft land base/tail slag/lake silt by supercharging preconsolidation at vacuum

Abstract

The invention relates to a method for treating a soft soil foundation / mine tailings / lake sludge by means of booster vacuum preconsolidation, which belongs to a construction method for the soft soil foundation / the mine tailings / the lake sludge, wherein insides of a plurality of rows of plastic drainage plates which are horizontally distributed inside soil mass / the slag / the sludge are subjected to vacuum pumping, and partial soil mass / partial slag / partial sludge between the plastic drainage plates is subjected to uniform supercharging simultaneously. The method can really reflect the reinforcing mechanism and the reinforcing effect of vacuum precompression on cohesive soil, tailing dam slag and the lake sludge, improves the consolidation depth by one time, shortens half of the reinforcing time, has low manufacturing cost, and is safe and effective.

Description

technical field [0001] The invention belongs to a construction method for soft soil foundation / tailing slag / lake silt, in particular to a method for rapidly improving the consolidation degree of soil / slag / silt by means of pressurization and vacuum preloading to treat soft soil foundation / tailing slag / lake silt Methods. Background technique [0002] At present, the soft foundation treatment methods in my country are: 1. vacuum preloading consolidation method; 2. dynamic compaction method; 3. surcharge preloading method; 4. vacuum preloading combined surcharge preloading method. The above methods are basically effective for sandy soil layers and general soil layers, but are ineffective for cohesive soil vacuum preloading consolidation method and dynamic compaction method. However, the cost of these two methods is relatively high. A 50cm sand cushion must be laid on the viscous layer, and it is not environmentally friendly. For special cohesive soil (permeability coefficient ...

AI Technical Summary

Problems solved by technology

For special cohesive soil (permeability coefficient ≥ 10 -7 Silty clay), none of the above methods can solve the problems of consolidation strength and construction time, and cannot be applied to the special construction needs of my country's roads, railways, docks and high seismic levels

[0003] The slag treatment of tailings dams in my country generally adopts the method of building high after surrounding the dam, causing it to settle, and then building higher and re-sedimenting. , great safety hazard

[0004] The lake silt in our country is naturally dried by accumulation. Often, if a pool is disposed of, it will pollute a piece of land and cause great damage to the environment.

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