Vacuum degree deep layer transmission water drainage plate and use method

Abstract

The invention discloses a vacuum degree deep layer transmission water drainage plate and a use method. The water drainage plate comprises a core plate and a filtering membrane. The filtering membrane warps the periphery of the core plate, and thus the core plate is of a grating structure with the upper portion and the lower portion opened and the periphery sealed. The core plate comprises grooves and a plurality of small square tubbiness grating chambers arranged and distributed, the core plate comprises multiple rows of X partition plates arranged in parallel and multiple rows of Y partition plates arranged in parallel, and the X partition plates and the Y partition plates are perpendicularly arranged in a crossed mode to form the small square tubbiness grating chambers and the grooves. The small square tubbiness grating chambers are located in the center of the core plate, the grooves are formed in the outmost row of the periphery of the core plate, and the grooves in the outmost row of the periphery of the core plate are wrapped by the filtering membrane to be sealed. The vacuum degree is transmitted towards different depths by arranging the small square tubbiness grating chambers with different grouped lengths, the vacuum degree on the surface layer in a vacuum preloading consolidating method can be effectively transmitted to the deep part of a soil layer especially when an ultra-deep soft soil foundation is processed, the post-construction settlement and the uneven settlement of all layers of the soft soil foundation can be greatly reduced.

Description

technical field [0001] The invention relates to a vacuum deep transfer drainage board and a use method thereof, in particular to a vacuum deep transfer drainage board used in civil engineering foundation vacuum preloading or vacuum surcharge combined preloading reinforcement and a use method thereof. Background technique [0002] At present, vacuum preloading technology has been more and more widely used in the reinforcement of soft soil foundations such as roads, municipalities and ports, and most of them use plastic drainage boards as vertical drainage bodies. After the plastic drainage board is inserted into the foundation soil, the drainage path of the foundation soil is shortened, which is conducive to the drainage of water in the foundation soil and the transfer of surface vacuum along the plastic drainage board to the deep foundation, which can effectively accelerate the reinforcement and consolidation of the foundation soil. At the same time, the plastic drainage boa...

AI Technical Summary

Problems solved by technology

With the continuous increase of the depth of the foundation treatment of the plastic drainage board, the vacuum degree will continue to dissipate, resulting in the use of conventional plastic drainage boards as the vertical drainage body for vacuum preloading to strengthen the ultra-deep weak foundation, and the upper foundation will be strengthened into a relatively small area. Good hard shell layer, but the treatment effect of the deeper soil layer is not obvious, and large post-construction settlement will still occur in the long-term operation and use stage

[0004] Chinese patent CN2576800Y discloses a drainage board reinforced by vacuum preloading soft foundation, but because it closes the drainage groove of the whole cross-section, under the condition that the general width of the conventional drainage board remains unchanged, the drainage path will be greatly reduced. The effect of soft foundation treatment has obvious influence

At the same time, if drainage holes are set in the upper section of the closed drainage tank, the vacuum will still gradually dissipate along the depth, and it is impossible to accurately set the vacuum transmission depth of the closed section.

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