摘要
分析了降雨入渗的过程,提出了降雨概念模型:讨论了如何用饱和-非饱和渗流数值方法分析边坡在不同雨型下的渗流场;分析结果表明:雨水入渗过程受初始渗流场影响很大,初始含水量的大小影响湿润锋的推进。暴雨情形下,雨水入渗缓慢,浅部土体保持一定吸力,雨停后渗流场仍有较大变化。
Based on the rainfall seepage process analysis ,a rainfall conceptual model is presented; and the method of how to calculate seepage field in a slope under diverse rainfall patterns by numerical analysis of seepage flow through the saturated and unsaturated soils is proposed .Analyzing results show that the rainfall seepage process is affected greatly by the initial seepage field; and initial moisture content has some influence upon the expansion of wetting front If it's raining hard, rainwater seeps so slowly that shallow soil keeps some suction. Although rain stops the seepage field will change greatly.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2003年第3期381-384,共4页
Rock and Soil Mechanics
基金
国家自然科学基金(编号:19802021)
关键词
饱和非饱和渗流
土坡
有限元
saturated-unsaturated seepage: slope
finite element
