METHOD FOR LAYING DOWN OF TAMPONAGE LAYER IN FOUNDATION PIT GUARDED WITH CHANNEL Russian patent published in 1996 - IPC

FIELD: civil engineering. SUBSTANCE: hopper with concrete cast pipe and closed water proof gate is loaded with concrete of concrete stirrer. The hopper is carried out inside channel guard to the place where concerting is needed and gate of concrete cast pipe is installed to soil. Then the gate is released. The hopper and concrete cast pipe are elevated a little at a height equal to 0.5 - 0.6 pipe diameter, and a portion of concrete mixture equal to hopper volume is laid down to the appropriate place. After laying down a portion of concrete mixture the hopper and concrete cast pipe are withdrawn, water proof gate is closed, and hopper is loaded again with concrete mixture, then the process is repeated again. EFFECT: high productivity. 5 dwg