METHOD TO ARRANGE BENTONITE-MAT-POLYMER SCREEN ON COLLAPSING SOILS Russian patent published in 2015 - IPC E02B3/16 

FIELD: construction.

SUBSTANCE: invention relates to hydraulic engineering, in particular, may be used in construction of watertight screens on canals, water reservoirs, industrial and domestic waste ponds made on collapsing soils and seismically dangerous areas. The method includes preparation of a soil base, its levelling, cutting of slots in soil with width of 0.1-0.3 m and depth of 0.3-0.5 m, where a polymer cloth 2 is placed, arrangement of deformation compensators 3, with simultaneous application of an anti-friction composition 4 inside folds. On top of the lower polymer cloth 2 they lay bentonite mats 5, above which they lay an upper polymer cloth 1, creating vertical deformation compensators 3 from vertical folds. The lower polymer cloth 2 is made simultaneously with horizontal and vertical folds. After the folds are ready, in a mechanised manner they fill the protective layer of the soil 6 using earth-moving mechanisms.

EFFECT: invention provides for increased antifiltration efficiency of screen operation on collapsing soils.

2 cl, 1 dwg