METHOD TO ARRANGE ZIGZAG ANTIFILTRATION DIAPHRAGM WITH INTERMEDIATE SEAMS FROM BENTONITE MATS (CLAY MATS) Russian patent published in 2014 - IPC E02B7/06 

FIELD: construction.

SUBSTANCE: method includes arrangement of intermediate seams of an antifiltration diaphragm on a ridge of filled layers of a soil dam along previously planned slopes in low soil dams with height of less than 30 m. The anti-filtration diaphragm is a bentonite mat (clay mat), with the help of which they arrange a zigzag anti-filtration diaphragm. Zigzaggedness of the diaphragm is provided by conditions for performance of works to fill support prisms in layers with thickness of at least 3 m with organisation of intermediate horizontal seams overlapping in parallel to the slope, and water impermeability of these layers is provided by a design of a jointing unit, pressure of soil of support prisms and hydrostatic water pressure. Additionally for convenience of assembly of a jointing unit of bentonite mats (clay mats) they may use 10 mm brackets.

EFFECT: usage of the invention will make it possible to reduce material and financial costs in erection of an anti-filtration diaphragm.

2 cl, 8 dwg