METHOD TO DEHYDRATE SLIDE BODIES BY SINGLE THROUGH FILTERS Russian patent published in 2013 - IPC E21C41/26 E02D17/20 

FIELD: construction.

SUBSTANCE: from the foot of a ledge or a slope or a hillside, a horizontal directional well is drilled with diameter of up to 1.8 m and with rise i=0.005 - 0.007 into the depth of the ledge or slope or hillside outside the borders of the slide body, a vertical well is drilled from the surface of the ledge or slope or hillside until it couples with the horizontal directional well for a single through filter with diameter from 200 to 500 mm. Coupling is ensured by a connection chamber, into the vertical well from the surface a single through filter is lowered, being made in the form of a pipe with perforated sections of holes and filtering elements arranged at the coupling level with each water-bearing horizon. Besides, areas of crossing with water-bearing horizons are covered with a fine material, such as gravel, crushed stone, polymer balls, at the same time in the horizontal directional well they install a pipe, which in the connection chamber is connected to a pipe lowered into the vertical well, on the connection of pipes a controlled valve is installed with a common water counter, and downstream each filtering element a water counter is installed.

EFFECT: invention provides for reliable prevention of slides formation.

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