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Positive and negative-pressure rapid consolidation method of hydraulic-filled sludge based on strength control

A technology of silt filling and strength control, applied in infrastructure engineering, soil protection, construction, etc., can solve problems such as unsatisfactory drainage consolidation effect and drainage board silting, avoid drainage board silting, improve drainage, etc. The effect of construction efficiency and broad market application prospects

Active Publication Date: 2017-02-22
NANJING PANYUAN ENG TECH
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  • Application Information

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Problems solved by technology

[0004] Purpose of the invention: The purpose of the present invention is to address the defects of the prior art, combined with the above-mentioned research results, to overcome the problems that the drainage boards are prone to clogging and the drainage consolidation effect is not ideal when the vacuum preloading technology is used to treat the blow-filled soft foundation, and propose a A positive and negative pressure rapid consolidation method of dredged fill silt based on strength control, which can effectively increase the reinforcement rate of dredged fill soft foundation and improve the quality of dredged fill soft foundation reinforcement.

Method used

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  • Positive and negative-pressure rapid consolidation method of hydraulic-filled sludge based on strength control
  • Positive and negative-pressure rapid consolidation method of hydraulic-filled sludge based on strength control
  • Positive and negative-pressure rapid consolidation method of hydraulic-filled sludge based on strength control

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Embodiment 1

[0037] Embodiment of the present invention is described below in conjunction with accompanying drawing:

[0038] The positive and negative pressure rapid consolidation method of dredged silt based on strength control in this embodiment is implemented on a large-area dredged soft soil foundation reinforcement project. The dredged soft soil foundation is a newly dredged soft soil foundation and belongs to the super soft soil foundation , the silt has high clay content and high moisture content, so it needs to be treated quickly to facilitate subsequent construction.

[0039] The specific implementation steps are as follows:

[0040] The first step: make the drainage system. Prefabricated drainage system at rear site. Drainage system includes vertical drainage system and horizontal drainage system. The vertical drainage system is composed of 3m drainage boards 1, the design spacing of drainage boards 1 is 1.0m, and hand joints 2 are installed on the top of drainage boards 1; t...

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Abstract

The invention discloses a positive and negative-pressure rapid consolidation method of hydraulic-filled sludge based on strength control. The positive and negative-pressure rapid consolidation method is characterized by comprising the following steps of arranging a drainage system in hydraulic-filled soft soil; arranging a moisture content detector in the hydraulic-filled soft soil; arranging a sealing film on the hydraulic-filled soft soil; then applying positive-pressure stack loads to the sealing film, and calculating the undrained strength of the hydraulic-filled soft soil in real time according to the moisture content measured by the moisture content detector; and starting the drainage system when the undrained strength, which is calculated according to the moisture content measured by the moisture content detector, of the hydraulic-filled soft soil reaches 1.5 kPa.

Description

technical field [0001] The invention relates to a method for rapid consolidation of dredged silt, in particular to a method for rapid consolidation of dredged silt under positive and negative pressure based on strength control, and belongs to the technical fields of water conservancy, coastal construction and port waterway engineering. Background technique [0002] In recent years, in order to solve the current situation of shortage of land resources, large-scale land reclamation projects have been carried out in coastal areas of our country, resulting in large-scale dredging soft soil and occupying large areas of land resources. Dredging soft soil has unfavorable engineering characteristics such as high water content, high compressibility, and extremely low bearing capacity. It must be reinforced to meet the needs of subsequent engineering construction. The vacuum preloading method has unique advantages in dealing with soft soil foundations, and is widely used in convention...

Claims

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Application Information

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IPC IPC(8): E02D3/02E02D3/10
CPCE02D3/02E02D3/10
Inventor 洪振舜吉锋丁建文
Owner NANJING PANYUAN ENG TECH
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