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三峡花岗岩地区坡面暴雨产流过程的研究
引用本文:余新晓,陈丽华.三峡花岗岩地区坡面暴雨产流过程的研究[J].北京林业大学学报,1995,17(4):67-73.
作者姓名:余新晓  陈丽华
作者单位:北京林业大学水土保持学院
摘    要:在地处长江三峡库区花岗岩地区的下岸溪典型小流域里,建立了5个代表不同土地利用现状(林地、灌草地和裸地)的径流观测场,同时进行了多次人工模拟降雨试验,通过对人工模拟降雨条件下坡面产流规律的研究,以动力波方程为理论依据,推导出了坡面产流的数学模型,并编写了QBASIC程序,模拟实际产流的动态过程。分别以参数a和各场降雨产生的坡面径流总量为因变量,实际雨强Ip、雨前土壤含水量δ和 为自变量,进行多元回归,得到了参数预测方程和单场暴雨条件下坡面产流总量的预测方程。通过检验,利用本文提出的方程预测单场暴雨条件下的坡面产流过程是可靠的,在实践中可以应用。

关 键 词:坡面径流,动力波方程,解析解,动态模拟,参数预测方程

Dynamic Simulation of the Process of Surface Runoff on the Sloping Field of the Three Gorges Under Rainstorm
Yu Xinxiao,Chen Lihua,Zhou Changqing,Tan Peng.Dynamic Simulation of the Process of Surface Runoff on the Sloping Field of the Three Gorges Under Rainstorm[J].Journal of Beijing Forestry University,1995,17(4):67-73.
Authors:Yu Xinxiao  Chen Lihua  Zhou Changqing  Tan Peng
Abstract:In the typical watershed──Xia’an stream belonging to the reservior area ofthe Three Gorges of Yangtze River in granitic region,five runoff plots(5m×20m)were es-tablished.Rainfall simulation experiments in the plots of various types of utilization,includ-ing woodland,shrubland and bareland,were carried out. Based on Kinematic Wave equa-tion,the authors infered the theorical solution of any point of the sloping field at anytime. Thus,the actual process of surface runoff can be simulated. The parameter,a,which deter-mines the quantity and tendency of runoff transportation was also calculated.After examina-tion, the authors find that it is reliable to use the solution in forecasting the dynamic processof runoff on sloping field under a rainstorm.
Keywords:the Three Gorges  slope runoff  simulation
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