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一、概 述 考虑蒸发影响的排水计算方法,和地下水蒸发与埋深关系指数密切相关.C.Φ.阿维里扬诺夫介绍的地下水蒸发强度与埋深关系为: ε_h=ε_0(1-h/h_ε)~n,(1)式中:ε_h,ε_0——分别表示地下水埋深为h(米)和零时的蒸发强度(米/天),其中ε_0值一般可用水面蒸发强度代替;h_ε——地下水停止蒸发时的埋深(米);n——与土壤质地等因素有关的地下水蒸发与埋深关系指数,一般n=1-3. 现有考虑蒸发影响的排水渗流理论计算公式中,多数是采用n=1求解的,也有一些是采用n=2求得解答的,关于n=3的情况,我们曾得出特定条件下的局部
I. OVERVIEW The drainage calculation method that considers the influence of evaporation is closely related to the relation index of groundwater evaporation and burial depth.C.Φ.Avillianov introduces the relation between the evaporation intensity of groundwater and burial depth: ε_h = ε_0 (1-h / h_ε) ~ n, (1) where ε_h and ε_0 - denote the evaporation intensity (m / day) of groundwater at h (meter) and zero respectively. ε_0 is generally replaced by water surface evaporation intensity; h_ε - groundwater depth of evaporation (m); n - soil texture and other factors related to the relationship between groundwater evaporation and depth index, the general n = 1-3 existing in the calculation of drainage seepage theory to consider the impact of evaporation , Most of them are solved by n = 1, and some of them are solved by n = 2. For the case of n = 3, we have found that the part under certain conditions