Anti-blocking controllable negative pressure quick solidifying method for flow state dredging silt

A technology of dredging silt and negative pressure, which is applied in waterway engineering and water conservancy fields, can solve problems such as poor silt effect and blockage of drainage channels, and achieve the effects of shortening the cycle of recovery and utilization, saving power consumption, and shortening the construction period

Inactive Publication Date: 2013-09-18
NANJING PANYUAN ENG TECH
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Problems solved by technology

However, the above-mentioned patents do not address the fundamental problem of the poor effect of vacuum treatment of fluid dredged silt—how to overcome the blockage of drainage channels

Method used

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  • Anti-blocking controllable negative pressure quick solidifying method for flow state dredging silt
  • Anti-blocking controllable negative pressure quick solidifying method for flow state dredging silt
  • Anti-blocking controllable negative pressure quick solidifying method for flow state dredging silt

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Embodiment 1

[0039] The anti-blocking controllable negative pressure rapid consolidation method of fluid dredging silt in this embodiment was implemented in a newly dredged river dredging silt yard with a test area of ​​8000m 2 (80m×100m), the specific steps are as follows (see Figure 1 to Figure 6 ):

[0040] (1) Determine the design parameters of the anti-blocking drainage board 1 and make the drainage board: take samples in the on-site reinforcement area, and determine the characteristic particle size d of the dredging mud according to the measured results of the dredging mud particles 85 =25μm, according to the most effective pore size of anti-clogging filter material O 95 and characteristic particle size of dredged silt d 85 Relationship: O 95 / d 85=3~4, to determine the effective pore size of the drainage plate filter membrane O 95 =80μm, when processing the anti-clogging filter membrane 1-2 of the drainage plate, the manufacturing process of the flat monofilament structure is ...

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Abstract

The invention relates to an anti-blocking controllable negative pressure quick solidifying method for flow state dredging silt, which belongs to the technical field of water conservancy and navigation projects. The method comprises the following steps: manufacturing an anti-blocking drain board, preparing an anti-block controllable negative pressure device, inserting the anti-blocking drain board, connecting drainage networks, covering for sealing, and draining water with vacuum and negative pressure. As the technical scheme reasonably ensures the specification and the structure of a filter membrane, and allows a drainage system to be stabilized in optimal vacuum and negative pressure for working with the aid of the anti-block controllable negative pressure device, so as to have the anti-blocking effect, and then guarantee a flow state dredging silt foundation to drain water and reinforce quickly.

Description

technical field [0001] The invention relates to a method for dredging silt, in particular to a method for rapid consolidation of flow-state dredged silt against blockage with controllable negative pressure, belonging to the technical fields of water conservancy and waterway engineering. Background technique [0002] The dredging of rivers and lakes and the construction of ports and waterways will inevitably produce a large amount of dredged silt; in addition, projects such as land reclamation and tidal flat development in coastal areas also require a large amount of dredged silt to be dredged. According to the applicant's knowledge, the current dredging methods commonly used such as cutter suction are fluid dredged silt with high water content and high clay content, and the drainage performance is poor. Practice has shown that under natural air-dried and consolidated conditions, it generally takes nearly 3 to 5 years or even longer for dredged silt foundations to be restored...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10
Inventor 洪振舜吉锋徐桂中
Owner NANJING PANYUAN ENG TECH
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