Method for regulating and controlling ventilating transformation and quickly reinforcing dredger fill in vacuum

A vacuum fast, blowing and filling technology, applied in soil protection, construction, infrastructure engineering and other directions, can solve problems such as slow drainage speed, drainage board blockage, etc., achieve fast reinforcement speed, easy operation, energy saving and effect of funds

Inactive Publication Date: 2010-10-06
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the silt produced by channel dredging and the floating mud produced by the waterworks also need an effective method to deal with them. If these dredging fills and dredged silt with high water content are reinforced by traditional vacuum preloading, it is easy to produce drainage board damage. Silting, and the problem of significantly slowing down the drainage speed after a certain vacuum pressure is reinforced for a period of time

Method used

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  • Method for regulating and controlling ventilating transformation and quickly reinforcing dredger fill in vacuum
  • Method for regulating and controlling ventilating transformation and quickly reinforcing dredger fill in vacuum

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] As shown in the accompanying drawing, on the original natural foundation 12, a bottom sand cushion layer 10 of 1 m is blow-filled, and the sand particle size adopted is that the mass content of 0.075 mm is greater than 50%, and the ventilation filter pipe 11 is installed in the bottom sand cushion layer, The ventilation filter tube 11 is arranged in a rectangular shape by connecting the horizontal and vertical ventilation filter tubes through a three-way and a four-way connection. valve 3. After the valve 3 is opened, the atmosphere enters the bottom ventilation filter pipe network 11 and the bottom sand cushion 10 through the ventilation pipe 2, and the bottom ventilation filter pipe diameter is 8cm.

[0023] Fill the silty clay mud 9 on the sand cushion layer 10 at the bottom to make it reach the filling level After ...

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Abstract

The invention discloses a method for regulating and controlling ventilating transformation and quickly reinforcing dredger fill in vacuum. The process of the method comprises the steps of: sequentially hydraulically filling a bottom sand cushion layer, a hydraulically filling mud layer, and an upper sand cushion layer on a primary natural foundation; laying a ventilating filter pipe net, a ventilating pipe and a ventilating valve in the bottom sand cushion layer; laying a drainage filter pipe in the upper sand cushion layer; connecting the drainage filter pipe with a vacuumizing device; arranging a drainage plate between the upper sand cushion layer and the lower sand chusion layer in a striking way; finally seal-capping with geotextile and a plastic sealing film; opening the vacuumizing system; and repeatedly carrying out the operations of closing the ventilating valve, stabilizing vacuum pressure, and draining water bodies in soil bodies and the operation of opening the valve to exhaust added airflows so as to quickly drain the water bodies in the bottom sand cushion layer, the drainage plate and the upper sand cushion layer. The method has the advantages of simple and quick construction, high speed of reinforcement and drainage, and fund saving.

Description

technical field [0001] The invention relates to a method for quickly reinforcing dredged fill soil by adjusting and controlling ventilation and changing vacuum, and belongs to the technical field of soft foundation treatment. Background technique [0002] In recent years, in order to meet the needs of the country's land resources and better promote economic and social development, land reclamation in coastal areas has attracted widespread attention. But at the same time, due to the limitation of soft soil geological conditions such as sedimentary facies and coastal areas in the coastal area, the dredger fill is silt and silty clay with high water content. How to choose the appropriate foundation treatment method and how to effectively control the investment , has become the primary problem that needs to be solved urgently. [0003] The more effective ways to reinforce the ultra-soft dredging fill soil with high water content formed by land reclamation in coastal cities are:...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10
Inventor 孙立强闫澍旺
Owner TIANJIN UNIV
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