Device and method for preventing blockage through charge permeation of drainage

Abstract

The invention provides a device and a method for preventing blocking through electric permeation of a drainage belt. The device comprises the drainage belt, metal wires I and II and metal plates I and II, the two metal wires are fixed at the two ends of the drainage belt; the two metal plates are inserted into soil on the two sides of the drainage belt respectively. Direct-current electrodes are respectively arranged on the metal wires and the metal plate for electroosmosis, fine clay particles in soil are migrated to the periphery of the metal plate from the vicinity of the drainage belt, the content and distribution of the fine clay particles in the stratum around the drainage belt are changed, and the permeability coefficient of the stratum around the drainage belt is increased; the problems that due to stratum drainage consolidation, fine particles are gathered around a drainage belt, the drainage belt is blocked, and the permeability coefficient of a soil layer is reduced are effectively solved, the stratum drainage speed is increased, the construction period can be greatly shortened, the replacement period of the drainage belt is shortened, in addition, the metal plate can be recycled, and the construction cost is reduced; the invention provides an efficient and environment-friendly method for preventing the blockage of the drainage zone and improving the drainage efficiency of the stratum during stratum consolidation.

Description

technical field [0001] The invention belongs to the technical field of drainage strips for drainage and consolidation of soft soil strata, and in particular relates to a device and method for electro-osmosis and anti-blocking of drainage strips. Background technique [0002] River and lake dredging, waterway construction, dredging and filling projects, and new high-rise buildings on soft soil layers involve a large amount of dredged silt or soft soil layers. These soft soil layers have high moisture content and high content of fine clay particles. Vacuum preloading is used Drainage consolidation or surcharge consolidation, combined with vertical drainage strips, can carry out drainage consolidation of the formation. The problem encountered at present is that as the drainage process advances, the drainage zone is gradually wrapped by fine clay particles around it, which eventually leads to the blockage of the drainage zone, resulting in the failure of the drainage zone, which...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the deficiencies and defects existing in the prior art. It provides a device and method for preventing clogging of drainage belt by electrofiltration, which prevents drainage belt clogging from the content and distribution of clay fine particles inside the formation, and effectively solves the problem of drainage belt clogging. The accumulation of fine particles around the drainage zone causes the blockage of the drainage zone and the decrease of the permeability coefficient of the surrounding strata

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