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几年来,一些生产单位利用了李传谟在“计算渗入系数新经验公式及其应用”一文提出的公式计算降水入渗系数。如华北有的省份采用该公式估算山区降水入渗系数。其具体计算结果,石灰岩地区,一般降水渗入系数都在0.75以上,还有一些地区高达0.9以上,其他岩类岩石分布地区,求出的降水渗入系数也在0.50—0.60以上。运用上述渗入系数估算的地下水资源,比其他常用的地下水资源评价方法计算的地下水资源大二、三倍以上。针对上述问题,有必要对计算渗入系数的“新经验公式”进行讨论。
In recent years, some production units have used Li Chuan-mo’s formula to calculate the precipitation infiltration coefficient in the article “Calculating the new empirical formula of infiltration coefficient and its application”. For example, some provinces in northern China use this formula to estimate precipitation infiltration coefficient in mountainous areas. The specific calculation results show that in limestone areas, the average infiltration coefficient of precipitation is above 0.75, and in some areas up to 0.9 above. In other rock types, the infiltration coefficient obtained is also above 0.50-0.60. The groundwater resources estimated using the above infiltration coefficient are more than two times larger than the groundwater resources calculated by other commonly used groundwater resource assessment methods. In view of the above problems, it is necessary to discuss the “new empirical formula” for calculating infiltration coefficient.