METHOD FOR ERECTING EARTHFILL DAM Russian patent published in 2002 - IPC

FIELD: hydraulic engineering. SUBSTANCE: method may be used in erecting dam provided with ground-water antiseepage member mainly by completion of work or during reconstruction of its head structure. Method involves construction of antiseepage member from binder soil and side toe from non-binder soil up to desired intermediate level; forming non-binder soil layer of desired thickness under them; building antiseepage member within thickness of this layer by filling trench penetrated by earth- moving machine with binder soil through thickness of non-binder soil layer. In the course of erecting upper part of ground antiseepage member by filling trench penetrated in non-binder soil of dam head structure with binder soil, non-binder soil in head structure is moisten prior to trench penetration and frozen in winter. Then trench is penetrated and filled with binder soil by the end of frosty period and/or in the beginning of non-frosty period. EFFECT: facilitated procedure for dam reconstruction; enhanced reliability of trench sides. 3 cl, 2 dwg