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

A soft soil foundation and tailings slag technology, which is applied in soil protection, infrastructure engineering, construction, etc., can solve problems such as poor stability, stepping on, and large safety hazards, and achieves shortened strengthening time, low cost, and solid The effect of increased knot depth

Active Publication Date: 2009-04-29
JIANGSU XINTAI GEOTECHNICAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 coun

Method used

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

Examples

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Effect test

Embodiment 1

[0012] Embodiment 1, the method for pressurized vacuum preloading consolidation treatment of soft soil foundation / tailings slag / lake silt, vacuumize the interior of several rows of plastic drainage boards arranged horizontally in the soil body / slag / silt, and simultaneously vacuum the plastic drainage boards Part of the soil / slag / silt in between is evenly pressurized.

[0013] That is to say, the top of each plastic drainage board 1 is directly connected to the vacuum tube 2. When the plastic drainage board 1 is connected to the vacuum tube 2, a hand joint 3 is used. The hand joint is composed of two parts. The lower end is in the shape of a hollow box. Several evenly distributed convex tubes are arranged on the top.

[0014] In the soil / slag / silt between the plastic drainage boards 1, the water-permeable booster pipes 4 are evenly distributed. The water-permeable booster pipes for horizontal wells are preferably composed of several sections of water-permeable hoses connected i...

Embodiment 2

[0015] Embodiment 2, with reference to Example 1, each row of plastic drainage boards 1 placed horizontally is arranged in a regular hexagon, and the distance between each plastic drainage board is designed to be 0.8-1.5m (determined according to design requirements), and each regular hexagonal A permeable booster pipe 4 is placed in the center.

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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 ...

Claims

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Application Information

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IPC IPC(8): E02D3/10
Inventor 金亚伟金亚君蒋君南孙瞿兵唐晓武
Owner JIANGSU XINTAI GEOTECHNICAL TECH CO LTD
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