Method of quickly solidifying surface layer of blown filled muck soft foundation

A technology of dredging silt and soft foundation, applied in the direction of infrastructure engineering, construction, etc., can solve the problems of large amount of admixture, large construction risk, pollution, etc., to reduce the cost of auxiliary engineering measures, realize waste utilization, improve The effect of permeability coefficient

Inactive Publication Date: 2018-11-02
连云港港口工程设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: a large amount of rock filling is required, resulting in a waste of natural resources; the sludge excavated by machinery and the sludge squeezed out by blasting cause secondary handling and pollution; the sludge resources cannot be fully and effectively used
The disadvantage is: like vacuum preloading, it needs a lot of drying time and auxiliary engineering measures, and the cost is high
The disadvantages are: a large amount of admixture is added, and the cost is high, and it is only used in the key parts of the project; the quality of the project is not easy to guarantee, and this process has been canceled in many areas
The commonly used method in the prior art is: sedimentation and drying for 4 months, after laying woven cloth and bamboo battens, use mountain bark soil as a working cushion, which not only greatly increases the project cost, but also brings great construction risks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1, a kind of method for rapid consolidation of dredging silt soft base surface layer, its steps are as follows:

[0030] (1) Establish construction passages: designate the dredging silt reinforcement area as the construction area, and build safe construction passages around the construction area. The construction passages are made of positioning piles and foam blocks fixed on the positioning piles;

[0031] (2) Laying non-woven fabrics, drainage boards and filter pipes: Lay 2 layers of non-woven fabrics on the mud surface in the construction area, each layer of non-woven fabrics is wrapped with plastic woven cloth and sewed for reinforcement; lay the first layer of non-woven fabrics After weaving, pass through the first layer of non-woven fabric and insert plastic drainage boards on the silt. The plastic drainage boards in the area are arranged in a square with a spacing of 1.0 meters and a depth of 0.5 meters; 2 layers of non-woven fabrics After the laying i...

Embodiment 2

[0037] Embodiment 2, a kind of method for rapid consolidation of dredging silt soft base surface layer, its steps are as follows:

[0038] (1) Establish construction passages: designate the dredging silt reinforcement area as the construction area, and build safe construction passages around the construction area. The construction passages are made of positioning piles and foam blocks fixed on the positioning piles;

[0039] (2) Laying non-woven fabrics, drainage boards and filter pipes: Lay 2 layers of non-woven fabrics on the mud surface in the construction area, each layer of non-woven fabrics is wrapped with plastic woven cloth and sewed for reinforcement; lay the first layer of non-woven fabrics After weaving, pass through the first layer of non-woven fabric downwards and insert plastic drainage boards on the silt. The plastic drainage boards in the area are arranged in a square with a spacing of 1.0 meters and a depth of 1.5 meters; two layers of non-woven fabrics After ...

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PUM

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Abstract

The invention relates to a method of quickly solidifying a surface layer of a blown filled muck soft foundation. The method comprises the following steps: delimiting a construction area of a certain area, and building safe construction passageways around the construction area; then paving a non-woven fabric, a drain board and a filter pipe, binding the filter pipe and the plastic drain board together, exposing 0.5-0.8 m of the plastic drain board, and then paving geotechnical cloth on the upper part of the filter pipe; arranging a jet pump in every 800-100 m<2> area; paving a plastic film on the upper non-woven fabric as a suffocation film; in a vacuum drainage process, carrying out on-film settlement observation and removing water accumulated on the film immediately; in the middle periodof drainage solidification, using a vibrator properly on the suffocation film to increase the vibrating load, and coating the vibrator with the non-woven fabric as on-film protection during vibration;and when the bearing force of the solidified muck reaches 50 Kpa or meets a designed demand, finishing solidification of the surface layer. According to the method provided by the invention, the construction period can be saved, steps such as a working cushion are saved, waste utilization of the muck is achieved, the solidification speed is high, the effect is good, and line production can be achieved.

Description

technical field [0001] The invention relates to a method for drainage and consolidation of silt soft foundations in port engineering, in particular a method for rapid consolidation of the surface layer of dredged silt soft foundations, which is used to reinforce the floating silt on the surface of newly filled silt, and is used as a construction support for deep reinforcement. force layer. Background technique [0002] In port engineering construction, one of the key technologies is silt treatment and silt utilization, which is one of the main factors affecting project quality, construction period and cost. Lianyungang's silt has fine particles, high water content, and poor physical and mechanical indicators. During the construction of the port, the silt must be treated, and the silt must be excavated or drained and consolidated for use as a foundation. Commonly used silt reinforcement technologies and processes are: [0003] Rock replacement: Use mechanical dredging to re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/20
CPCE02D19/20
Inventor 朱从富王卫东高兆福倪祖平刘桂松岳连根宋兵徐全德季飞张广娟郭玉昌郭玉桂蔡云晟
Owner 连云港港口工程设计研究院有限公司
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