Device for controlling deformation of vacuum tube in sandmat-free vacuum preloading overconsolidation soft soil

Abstract

The invention relates to a device for controlling deformation of a vacuum tube in sandmat-free vacuum preloading overconsolidation soft soil, comprising a plastic woven fabric (6), a plastic drain board (1), branch pipes (2), main pipes (3), a geotextile (7) and a PVC geomembrane (8), wherein the plastic drain board is connected with the branch pipe (2) which is connected with the main pipe (3); the geotextile (7) covers the branch pipe (2); and the PVC geomembrane (8) covers on the geotextile (7). The invention is characterized in that: a. drain blind ditches (4) are arranged at two sides of the branch pipe (2) and the main pipe (3); b. tri-dimensional geonets are arranged between the branch pipes (2), between the branch pipes (2) and the main pipes (3), and between the main pipes (3); and c. a continuous supporting frame penetrates into the branch pipes (2) and the main pipes (3), the section of the supporting frame is cross-shaped, and each blade of the supporting frame (9) is distributed with water-gas balance holes (10) along the length direction thereof. The device in the invention can ensure drainage and aeration capability of the vacuum system and eliminate vacuum blind spots under membrane.

Description

(1) Technical field [0001] The invention relates to a vacuum tube deformation control device in the consolidation of vacuum preloaded supersoft soil without sand cushion. It belongs to the technical field of ground treatment. (2) Background technology [0002] With the rapid economic and social development in my country's coastal areas, the scarcity of land resources has become a bottleneck restricting further economic and social development. In order to alleviate this contradiction, various localities have successively issued policies to speed up land reclamation in tidal flats in coastal areas to alleviate the shortage of land use. The tidal flat area is low-lying, and generally needs to be raised by dredging filling. In most coastal areas of my country, there is a lack of sand resources, and most of the dredging fill is mud. In tidal flat areas, the site is generally under-consolidated soil, and the thickness of the soft soil layer below it varies from a few meters to t...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the existing sandless cushion vacuum preloading technology, the circular deformation of the vacuum tube and the vacuum force transmission and drainage capacity under the membrane, to provide a method that can ensure the drainage and ventilation capacity of the vacuum system, and eliminate the vacuum blind spots under the membrane. Vacuum Tube Deformation Control Device in Consolidation of Sand-free Cushion Vacuum Preloaded Supersoft Soil

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