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A construction method for dewatering system for silty soil with high moisture content

A technology with high water content and construction method, applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of non-reusable, non-removable, long processing time, etc. simple effect

Inactive Publication Date: 2020-12-15
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned dehydration treatment method has technical defects and problems such as long treatment time, uneven drainage in the soil body, and some equipment can only be installed in situ, cannot be taken out, and cannot be reused.

Method used

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  • A construction method for dewatering system for silty soil with high moisture content
  • A construction method for dewatering system for silty soil with high moisture content
  • A construction method for dewatering system for silty soil with high moisture content

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Embodiment

[0097] Taking the precipitation consolidation of a highway subgrade filling as an example, the subgrade filling of this project is mainly silty clay, and the empirical value of the permeability coefficient of the soil is 5×10 -7 m / s, due to the atmospheric precipitation and artificial mining here, groundwater flows from northwest to southeast, resulting in the water content of silty clay in the foundation (ω 1 ) reaches 25% and above, which does not meet the requirements as roadbed filler, and the moisture content will be reduced to 12% to 15% (ω 2 ), so that the silty clay can meet the requirements of this expressway roadbed filler.

[0098] Such as figure 2 As shown, construct a drainage system for silty soil with high water content, plan a 22m long and 22m wide square open space around the expressway construction project, remove sundries and weeds on the surface, The center first builds the regular octagonal inner wall 11 of the sump 4, the vacuum pump 1 is placed inside...

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Abstract

The invention discloses a drainage system and method for high-water-content slity soil, and belongs to the technical field of highway filler drainage engineering. The drainage system for the high-water-content slity soil comprises a filtering and draining device, a water collecting tank and a dewatering field; the filtering and draining device comprises a vacuum pump, an inner side pipe ring, an outer side water collecting pipe ring and multiple water filtering pipes communicating in sequence; the inner side pipe ring and the outer side water collecting pipe ring are both arranged above the water collecting tank; the inner side pipe ring and the outer side water collecting pipe ring communicate through multiple first connecting pipes; all the first connecting pipes are provided with air water control valves; the water filtering pipes are arranged at the bottom of the dewatering field; and the high-water-content slity soil to be drained is placed in the dewatering field. The drainage system and method for the high-water-content slity soil are quick, efficient, simple in construction process, low in construction quantity, low in construction cost and capable of being recycled.

Description

technical field [0001] The invention relates to the technical field of expressway filler dewatering engineering, in particular to a construction method for a dewatering system for silty soil with high water content. Background technique [0002] In expressway construction projects, the foundation soil and backfill soil should have sufficient strength and stability, and cannot be damaged or deformed, otherwise the expressway subgrade and pavement will be damaged and cannot meet the use requirements. Therefore, the selection of roadbed filler is particularly important. Silty soil with too high moisture content cannot be used as roadbed filler. In the prior art, dredging treatment methods such as turning over the sun, adding lime, and installing equipment in situ to remove moisture in the soil are used. However, there are technical defects and problems such as longer processing time, uneven drainage in the soil body, and some equipment that can only be installed in situ, cannot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/10E02D19/06
CPCE02D3/10E02D19/06
Inventor 张淑坤屠兴宇陆璐
Owner LIAONING TECHNICAL UNIVERSITY
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