Rapid consolidation method applicable to silt soft foundation

It is a soft foundation and rapid technology, which is applied in the fields of infrastructure engineering, soil protection, construction, etc. It can solve problems such as increased project cost, high cost of stockpiling materials, and large settlement, and achieves environmental protection problems, large drainage, and high water content The effect of low water

Inactive Publication Date: 2018-11-02
连云港港口工程设计研究院有限公司
View PDF8 Cites 0 Cited by
  • 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 silt excavated by machinery and the silt squeezed out by blasting cause secondary handling and pollution
The disadvantages are: the silt particles are too fine, the permeability coefficient is too low, and the vacuuming time is too long (for example, in Lianyungang Port, when the silt thickness is 18 meters, the vacuuming time takes 9 months), which seriously affects the progress of the project and the project cost is also high; After the silt foundation is strengthened by vacuum preloading, the water content of the silt is still high, about 50-60%, the strength is low, the bearing cap

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1, a fast consolidation method suitable for soft foundation of silt, the steps are as follows: in the in-situ of the shallow dredging sludge to be treated, adding alkali-making waste, carbon slag and non-ionic to the dredging sludge Surfactant, stirring, react at natural temperature; the added amount of soda slag is 8% of the weight of the filling sludge, and the added amount of non-ionic surfactant is 3‰ of the soda slag; The added amount is 3% of the weight of the dredging sludge, and the reinforcement depth of the dredging sludge is 1-2 meters; after the reaction is completed, a vacuum jet pump is used to vacuum water to complete the rapid consolidation of the silt soft foundation. After the soil is consolidated The site is used as a working cushion; the soda-making waste residue refers to the waste residue from the production of soda ash, which contains Ca ions. When the vacuum jet pump is used for vacuum suction, the suction flow of the jet pump is 10 m 3 / h...

Example Embodiment

[0027] Example 2, a fast consolidation method suitable for soft foundation of silt, the steps are as follows: in the in-situ of the shallow dredging sludge to be treated, adding alkali-making waste, carbon slag and non-ionic to the dredging sludge Surfactant, stirring, react at natural temperature; the added amount of soda slag is 12% of the weight of the dredging sludge, and the added amount of non-ionic surfactant is 5‰ of the soda slag; The added amount is 6% of the weight of the dredging silt, and the reinforcement depth of the dredging silt is 1-2 meters; after the reaction, the vacuum jet pump is used to vacuum water to complete the rapid consolidation of the silt soft foundation. After the soil is consolidated The site is used as a working cushion; the soda-making waste residue refers to the waste residue from the production of soda ash, which contains Ca ions. When the vacuum jet pump is used for vacuum suction, the suction flow of the jet pump is 10 m 3 / h-15m 3 / h, th...

Example Embodiment

[0028] Example 3, a fast consolidation method suitable for silt soft foundation, the steps are as follows: on the in-situ of the shallow dredging sludge to be treated, adding alkali-making waste, carbon slag and non-ionic to the dredging sludge Surfactant, stirring, react at natural temperature; the amount of soda-making waste is 10% of the weight of the dredging sludge, and the amount of non-ionic surfactant is 4‰ of the soda-making waste; The added amount is 5% of the weight of the dredging silt, and the reinforcement depth of the dredging silt is 1-2 meters; after the reaction, the vacuum jet pump is used to vacuum water to complete the rapid consolidation of the silt soft foundation. After the soil is consolidated The site is used as a working cushion; the soda-making waste residue refers to the waste residue from the production of soda ash, which contains Ca ions. When the vacuum jet pump is used for vacuum suction, the suction flow of the jet pump is 10 m 3 / h-15m 3 / h, t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a rapid consolidation method applicable to a silt soft foundation. The rapid consolidation method applicable to the silt soft foundation comprises the following steps of in the normal position of reclamation sludge of a superficial layer to be treated, adding soda-manufacturing waste residues, carbon residues and a non-ionic surface active agent into the reclamation sludge, stirring, and reacting at the natural temperature, wherein the adding amount of the soda-manufacturing waste residues is 8 percent to 12 percent of the weight of the reclamation sludge, the adding amount of the non-ionic surface active agent is 3 thousandth to 5 thousandth of the soda-manufacturing waste residues, the adding amount of the carbon residues is 3 percent to 6 percent of the weight of the reclamation sludge, and the reinforced depth of the weight of the reclamation sludge is 1 to 2m; and after finishing reaction, adopting a vacuum jet pump for vacuum absorbing water, accomplishing rapid consolidation of the silt soft foundation, and using a soil-consolidated place as a working cushion, wherein the soda-manufacturing waste residues are waste residues produced by soda ash production and contains Ca ions. The method provided by the invention is reasonable, and fast and thorough in drainage consolidation, has the characteristics of energy conservation and environment protection at the same time, and further effectively utilizes the soda-manufacturing waste residues.

Description

technical field [0001] The invention relates to a method for draining and consolidating mud soft foundations in port engineering, in particular to a rapid consolidation method suitable for mud soft foundations. 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. The 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 to be used as a foundation. Commonly used silt reinforcement technologies and processes in the prior art include: [0003] Rock replacement: Use mechanical dredging to remove the silt and then throw rocks to form a dump foundation, or use the patented blasting technology to replace the silt to form a stable foundation for the building. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E02D3/10
CPCE02D3/10
Inventor 朱从富王卫东高兆福倪祖平杨京方邓江王灿徐全德惠秋景翟光鹏王琼朱玉青江振华
Owner 连云港港口工程设计研究院有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products