METHOD OF BUILDING PLASTIC DRAINAGE IN WATER-LOGGED GROUND Russian patent published in 2004 - IPC

FIELD: reclamation building, particularly for constructing collector-and-draining system in water-logged ground.

SUBSTANCE: method involves laying drains with water passage blocked in outlet thereof; laying collector; consequence connecting drains to collector and opening water passage. Drains are placed by narrow-trench method simultaneously with forced feeding water in built drain part through free end thereof and with covering upper part of filtering filler by screen. Drains are joined to collector in connection areas with gradually increasing flow area. Optimal flow rate of flow fed to built drain part is equal to Q=0.5VπR², where V is speed of drain laying, R - radius of drain flow area. Region of forced water feed moves as edge of built drain advances at speed equal to drain laying speed.

EFFECT: elimination of filtering filler mudding, reduced cost, protection of collection-and-drainage system against ingress of fine ground particles during collection-and-drainage system building and, as a result, increased service life of collection-and-drainage system.

3 cl, 3 dwg