WATER DRAINAGE DITCH Russian patent published in 2005 - IPC

FIELD: building, particularly water drainage ditch arrangement in road embankments built on permafrost grounds.

SUBSTANCE: ditch comprises substituted ground body having h_g height and b_g width, forming water way of h_w depth by upper surface thereof and contacting with natural ground by lower surface thereof. Ditch has side intermediate bodies located from both substituted ground body sides and prism of fractional rock ground having h_r height. Prism is laid in water way and extending above natural ground surface for h_p height. Substituted ground body is formed of weakly filtering material and has side slopes close to natural slopes of this ground. Upper surface of substituted ground body is spaced h_w value from lower ground surface. Side intermediate bodies formed of peat have triangular shapes with apexes facing downwards. Each triangle contacts with substituted ground body and with prism by one side and with natural ground by another side thereof. Triangle base coincides with natural ground surface level.

EFFECT: prevention of uneven embankment settlement.

2 cl, 1 dwg