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本文根据已求得的通辽地区不同非饱和带分区的次降雨入渗系数 (文献 [1]、[2 ])及其对应的地下水位埋深 ,次降雨量大小 ,采用变步长分步模拟优选方法及非线性规划法确定了每一规划分区不同等级降雨量下的降雨入渗系数随地下水位埋深Δ而变化的模拟曲线。在此基础上 ,通过多元回归分析技术找出了α-Δ线型中不同系数随降雨量的变化曲线 ,从而 ,使我们把次降雨量的α -P-Δ 关系写成一个统一的式子 ,克服了每一等级降雨量均给出不同式子的缺点
Based on the subsurface rainfall infiltration coefficient (literature [1], [2]) and the corresponding groundwater depth and sub-rainfall of the different unsaturated zones in Tongliao area, The optimal method and nonlinear programming method are used to determine the simulation curves of the rainfall infiltration coefficient varying with the groundwater level depth Δ for each level of rainfall in each planning area. On this basis, the multiple regression analysis technique is used to find out the curves of different coefficients in α-Δ line with rainfall, so that we can make the α-P-Δ relationship of sub-rainfall as a unified formula, Overcoming the drawbacks of giving different formulas for each level of rainfall