摘要
从动量定理和水量平衡原理出发,推导出自然降雨条件(即同时考虑变雨强、降雨动量和风影响下的坡地径流过程)下的坡地径流基本方程。在考虑一般问题定解条件的基础上,采用Preissmann隐式格式对模型进行数值求解。利用在江西省水土保持生态科技园内的10组实测资料对模型进行了验证,其计算值与实测值的相对误差不超过±11%;说明模型的计算结果是可靠的,提出的自然降雨条件下坡地径流模型是可行的。
Based on the principle of momentum theorem and water balance the basic equation for describing the runoff generated on a slope under the condition of natural rainfall .with different rainfall intensities, rainfall momentum and influence of wind taken into account is deduced. The equation can be numerically solved by applying the Preissmann format. The feasibility of the model is verified by field experimental data. The maximum deviation between calculation result and experimental data is about 11%.
出处
《水利学报》
EI
CSCD
北大核心
2007年第6期668-673,共6页
Journal of Hydraulic Engineering
基金
国家自然科学基金资助项目(50309003)
河海大学科技创新基金重点资助项目(2084/405002)
关键词
自然降雨
径流模型
数值模拟
slope
natural rainfall
model for runoff generation
numerical simulation
