METHOD OF ESTIMATING FILTERING STABILITY OF CROUND OF DRAIN ZONE OF CLOSED HORIZONTAL DRAINAGE

摘要

the invention u043au0430u0441u0430u0435u0442u0441u00a0 construction closed horizontal drainage in the u043cu0435u043bu0438u043eu0440u0438u0440u0443u0435u043cu044bu0445 u0437u0435u043cu043bu00a0u0445. the purpose of u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 is improving the efficiency of the drainage. the measurement of pressure gradient u0434u043bu00a0 are in the zone of contact of soil and u0434u0440u0435u043du044b.on the function and a u04432 established experimentally, the u0444u0438u043bu044cu0442u0440u0430u0446u0438u043eu043du043du0443u044e sustainability of soil u043fu0440u0438u0434u0440u0435u043du043du043eu0439 zone, where y is the gradient of pressure; and a u043fu043eu0441u0442u043eu00a0u043du043du044bu0435 ve u0434u043bu00a0 identities of each soil. in the calculation of drainage should be taken into account to estimate the gradient pressure (Ypac) in u043fu0440u0438u0434u0440u0435u043du043du043eu0439 zone soils did not exceed the critical pressure gradient (YKp).in particular, u0434u043bu00a0 u043bu0435u0441u0441u043eu0432u0438u0434u043du044bu0445 loam soil Ypac must be less than or equal to four. the conservation of this equality u0434u043eu0441u0442u0438u0433u0430u0435u0442u0441u00a0 by u0432u0432u0435u0434u0435u043du0438u00a0 in calculated parameter drainage correction factor as well. u043fu043eu043bu0443u0447u0435u043du043du0430u00a0 in dependence u0434u043bu00a0 u043bu0435u0441u0441u043eu0432u0438u0434u043du044bu0445 loam soil is following Kt 2.3.the conclusion that the u0442u0440u0435u0431u0443u0435u0442u0441u00a0 reduce u0440u0430u0441u0441u0442u043eu00a0u043du0438u0435 between u0434u0440u0435u043du0430u043cu0438 is made on the basis of the following: it is known that the actual pressure in the zone can u043fu0440u0438u0434u0440u0435u043du043du043eu0439 gradients to reach significant values.when the drena such pressure gradients, for example, the estimated coefficient u043bu0435u0441u0441u043eu0432u0438u0434u043du044bu0445 loam soil u0443u043cu0435u043du044cu0448u0430u0435u0442u0441u00a0 filtered several times, and u0441u043bu0435u0434u043eu0432u0430u0442u0435 rect, u0443u043cu0435u043du044cu0448u0438u0442u0441u00a0 and u0440u0430u0441u0441u0442u043eu00a0u043du0438u0435 between u0434u0440u0435u043du0430u043cu0438. 2). with / to