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Self-drilling excessive pore water dissipation sleeve

A pore water, self-drilling technology, applied in soil protection, construction, infrastructure engineering, etc., can solve the problems of low degree of mechanization, slow dissipation of excess pore water, and inability to adapt to construction needs, etc., to achieve shortened consolidation Time, improve construction efficiency, reduce the effect of screwing resistance

Inactive Publication Date: 2016-04-13
NANJING ELECTRIC POWER ENG DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional pore water dissipating devices are not highly mechanized and the excess pore water dissipates slowly, which cannot meet the actual construction needs

Method used

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  • Self-drilling excessive pore water dissipation sleeve

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Experimental program
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Effect test

Embodiment

[0023] Embodiment: This embodiment is the foundation treatment project of the warehouse of the alkali factory. The foundation reinforcement site is located at the seaside. The site was originally an abandoned salt pan. It is a typical weak soil layer with high compressibility and poor permeability. Since the bearing capacity and deformation of the foundation soil cannot meet the requirements of building a warehouse, a large area of ​​foundation treatment must be carried out. It is planned to use 7-meter-high river sand for surcharge preloading reinforcement, and at the same time adopt the present invention to dissipate excess pore water in the process of preloading drainage. The specific soil conditions of the foundation site are as follows:

[0024] The first layer is a littoral sedimentary silt layer with a thickness of about 15 meters, which is in a soft plastic-plastic state, with a sub-clay layer in the middle. The cross plate shear strength of the soil layer is 11KPa, ...

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Abstract

The invention provides a self-drilling excessive pore water dissipation sleeve, comprising a sleeve; a plurality of precession blades are arranged on an outer wall of the sleeve and a plurality of through holes are formed in the outer wall of the sleeve; a sharp-pointed tunneling head is arranged on a front end of the sleeve; the outer wall of the sleeve and the tunneling head are made of resin fibers; and an inner wall of the sleeve is formed by a meshed flexible plastic net. The self-drilling excessive pore water dissipation sleeve is applicable to the pre-pressure drainage consolidation treatment for a sludge soil site of sedimentary littoral facies and capable of forming a quick drainage channel, and therefore, an engineering common vertical drainage system is optimized; excessive pore water may be enabled to flow into the dissipation sleeve in a horizontal direction and soil solidification time thus can be greatly shortened; when the sleeve is used, pre-drilling in the stratum is not required and the construction efficiency thus is greatly improved.

Description

technical field [0001] The invention mainly relates to the technical field of preloading and consolidation drainage foundation treatment, in particular to a self-drilling super-pore water dissipating casing. Background technique [0002] In recent years, the infrastructure construction in my country's coastal areas has developed rapidly, and a large number of factories, ports, docks and other infrastructures have been built in the coastal areas. Built on weak foundations. Coastal areas in my country are widely distributed in littoral sedimentary silt soil layers, which have low strength, high compressibility, and poor water permeability, and will produce large settlements under building loads, thereby affecting the normal use of buildings. In addition, the coastal facies silt layer used as the foundation soil will have shortcomings such as insufficient foundation bearing capacity and insufficient stability, which cannot meet the engineering requirements. Therefore, it is us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10
CPCE02D3/10
Inventor 黄峥黄士君储方舟丁静鹄黄涛马金荣陶祥令尹可心
Owner NANJING ELECTRIC POWER ENG DESIGN