Of Precipitation And Infiltration Analysis Method

The shortage of water resources will be become a global problem for human being in 21 century. China is one of the countries which water resources is much short, so Water resources is very important to China. Studying precipitation infiltration and raising precipitation efficiency are very important approaches for better using flood water and recharging ground water. I other words, it can alleviate water resources crisis, protect living environment of human beings for promoting social-economic. Special in the mountain area, raising precipitation infiltration is much important. The paper finds out the factors of precipitation infiltration efficient and utilize constructs model of precipitating infiltration calculates precipitation infiltration coefficient and precipitation infiltration amount by theory study.The distribution of different stratum is the key to affect the precipitation infiltration coefficient. The paper firstly calculates the precipitation, runoff and base flow for different hydrologic divisions. The groundwater recharge process is calculated by inverse operation method. Then, the best regression equation is obtained which are the coefficient of precipitation infiltration and the weights of the different stratum area to the total area of the catchment. Finally, the equation is applicated to research area. The results show that the method is suitable and reliable for the ground water recharge calculation in mountain area.