一 “渗入系数”的基本公式是一多变量函数 根据水均衡条件简化(假定无地表水补给)处理后,得出渗入系数的公式是: α=(x-y-z)/x式中:x——年降水量(米); y——地表水年流出量(米); z——年蒸发量(米)令h=x-y则α=(h-x)/x h=αx+z 上式外形为直线方程,直线斜率即“渗入系数”α,直线截矩即蒸发量z。这一计算方法把α与z认为是常量,经最小二乘法处理后,在水文地质普查中 The basic formula for “infiltration coefficient” is that after a multivariate function is simplified (assuming no surface water recharge) according to the water balance condition, the formula for infiltration coefficient is: α = (xyz) / x where: x - year Precipitation (in meters); y - annual outflow of surface water (in meters); z - annual evaporation in meters Let h = xy then α = (hx) / xh = αx + The slope of the line is “infiltration coefficient” α, and the linear intercept is the evaporation amount z. This calculation method considers α and z as constants, and after the least squares method, in the hydrogeological survey