| 摘要 |
FIELD: construction. ^ SUBSTANCE: method includes construction of a drainage system with a distance between parallel drains E and depth of their installation hd with the depth of retainer location relative to the drain trench bottom T, marking perpendicularly to drains, in their middle along the length, a supervisory range, arrangement of hidden piezometres in the range to monitor water level in the drain hoi and wells with water-permeable walls to observe level of perched groundwater and soil and ground waters in the space between drains hi above the drain trench bottom, performance of observations for many years within the drain life of i years over the progress of hoi, hi; and a module of drainage qi, analysis of produced data and its comparison with permissible values. Additionally monitoring is carried out over variation of the averaged coefficient of filtration of drained soils Kfi, including performance in the phase of drainage reduction in the last autumn cycle of drainage action prior to establishment of a solid snow cover, when evaporation from the soil surface is close to zero, at least once per day of observation over hoi, hi and qi, setting the value Kfi using the formula, at the same time for each i year one and the same calculation formula is used to determine Kfi, and its modification with age of the drain - by making of a soil profile of empirical dependence for subsurface horizons. ^ EFFECT: using the invention will make it possible to produce valid assessment of drainage system operation. ^ 5 cl |
