Umbrella type drainage device and drainage method thereof

Abstract

The invention provides an umbrella type drainage device and a drainage method thereof. The umbrella type drainage device comprises a framework and umbrella cloth. The framework is composed of a longitudinal drainage pipe and transverse drainage pipes. The transverse drainage pipes are hinged to the longitudinal drainage pipe and communicated with the longitudinal drainage pipe. The outer surface of the framework is coated with a layer of filter cloth, and a plurality of filter holes are formed in the framework. The umbrella cloth penetrates the longitudinal drainage pipe to be fixed to the transverse drainage pipes, and the centers of the umbrella cloth and the longitudinal drainage pipe are fixed together through tying ropes. A connector communicated with a drainage pipeline is arranged on the upper portion of the longitudinal drainage pipe. The device is high in adaptability and good in sludge plugging prevention effect.

Description

technical field [0001] The invention relates to a drainage device and a drainage method thereof, in particular to an umbrella type drainage device and a drainage method thereof. Background technique [0002] With the development of tidal flat reclamation and construction in China, especially after my country’s “Twelfth Five-Year Plan” proposed to promote the development of marine economy, the requirements for the area of ​​the land area near the sea and the speed of development will inevitably increase, and land reclamation is one of the main measures. . However, most of the reclamation soils used for reclamation of marine tidal flats are mainly soft soils with weak permeability, high saturation, low strength and high rheology, such as muddy soil, silty sandy soil, and organic matter clay. Reinforcement treatment. At present, there are two main types of treatment measures for dredging soft soil foundation, one is the drainage consolidation method, and the other is the compo...

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Problems solved by technology

[0007] Case 1, the contact surface between the three-dimensional drainage body and the soil is small, and the sticky fine particles of the soft clay filled in a certain volume are easy to gather in the filter cloth wrapped outside the three-dimensional drainage body, causing silting and weakening the drainage effect of the three-dimensional drainage body ;

[0008] In the second case, the three-dimensional drainage body is supported by rigid materials. If the three-dimensional drainage body is lower than the weak dredger fill, it is difficult for the three-dimensional drainage body to work in the dredger fill, especially in soils with high water levels, strong rheology, and low strength. Suspended standing causes it to fall. If the three-dimensional drainage body is higher than the thickness of the weak dredged fill, during the drainage consolidation process, with the settlement of the dredged fill, the rigid three-dimensional drainage body can easily pierce the upper vacuum sealing membrane;

[0009] Situation 3: In the treatment of the newly filled soil, the horizontal drainage channel of the three-dimensional drainage body has high fluidity and insufficient compressive strength. When the three-dimensional drainage body is driven into such soil, the strength of the soil is too low to Fully support the horizontal drainage body, which may cause the horizontal drainage channel to be unable to fully expand, affecting the drainage area and the uniformity of soil strength after treatment

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