PVD drainage system and method thereof

Abstract

The invention provides a PVD (Physical Vapor Deposition) drainage system and a method thereof, and is characterized in that the PVD drainage system comprises a polygonal barrel, a plurality of drainage strips which are uniformly distributed along the length direction of the barrel are arranged on the outer side of the barrel, the drainage strips are uniformly distributed, a drainage part is formed between every two adjacent drainage strips, and a plurality of auxiliary through holes are further formed in the barrel. The auxiliary through holes are in a horn shape, the large opening ends of the auxiliary through holes are located on the outer side face of the cylinder body, the small opening ends of the auxiliary through holes are located on the inner side face of the cylinder body, a reinforcing support is installed on the inner side of the cylinder body, a linkage shaft is vertically and rotationally arranged on the reinforcing support, and the lower end of the linkage shaft is connected with spiral guide vanes. And a heating piece is mounted in the spiral guide vane.

Description

technical field [0001] The invention belongs to the technical field of buildings, and relates to a PVD drainage system and a method thereof. Background technique [0002] Soft soil foundation is a special foundation commonly used in construction. Requires special design handling. It is mostly distributed in rivers, rivers, ocean coasts, inland lakes, ponds, basins and rainy mountain depressions. Soft soils are characterized by high water content, large pores, poor permeability, low natural strength, and high compressibility. Commonly used treatment measures for soft soil foundation include replacement of filling, drainage sand cushion, back pressure berm, riprap for silting, cement-soil mixing, surface reinforcement with civil fabrics and sand well reinforcement, etc. The definition of soft soil foundation in my country's road industry standards refers to weak soil layers with low strength and high compression, most of which contain certain organic substances. The cause ...

AI Technical Summary

Problems solved by technology

[0004] The existing drainage board has the following disadvantages: drainage in the groove (one-way drainage) will form a hard shell on the groove surface in the later stage of consolidation, causing well resistance. The reason is that the pore pressure on the back dissipates slowly due to one-way drainage, and The pore pressure dissipates quickly on the one-way drainage surface, and a hard shell is formed in the later stage. On the other hand, the penetration time in the radial direction is fast, resulting in a fast consolidation rate;

[0005] However, the existing combined pressurization method: a hard shell will be formed in the later stage of the soil near the heat source in the radial direction, and the seepage velocity will slow down, that is, a soil column will be formed

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