OBSERVATION DRAINAGE PLASTIC WELL FOR HEAVING SOILS Russian patent published in 2017 - IPC E02B11/00 E03F5/02 

FIELD: agriculture.

SUBSTANCE: observation drainage plastic well for heaving soils contains the bottom 1 of a rigid plastic pipe with an outer lateral corrugated surface, the shaft 2 connected thereto, which also includes a rigid plastic pipe with an outer lateral corrugated surface, the lid-hatch 9 and the inlet 6 and the outlet 7 connecting pipes of closed manifolds, attached thereto. In order to reduce the influence of tangential forces of the soil frost heaving on the well stability, reliability, service life and durability, the shaft 2 is additionally equipped with the rigid plastic pipe 3 with the smooth outer lateral surface of the same diameter, mounted above the plastic pipe 2 with the outer corrugated side surface coaxial therewith in the zone 5 of the calculated soil freezing depth, corresponding to the p-percent probability of exceeding in the well installation place, and rigidly connected thereto by means of e.g. welding. Wherein the bottom 1 is connected to the shaft 2 by means of a rigid connection 4, for example by welding.

EFFECT: increased service life of the observation plastic drainage well, namely not less than the standard service life of the whole drainage system made of plastic materials, reducing the costs for its operation, improving the reliability and effectiveness of the action and closed drainage.

1 dwg