摘要
在单裂隙黄土积水入渗特性实验研究的基础上,对实验中如何处理与利用边界条件及正确分析实验资料等问题进行了探讨。提出利用有限边界的湿润锋与无裂隙自由入渗的湿润锋二者变化特征相关分析法,得到了不同裂隙深度自由入渗的最大影响范围,为半无限边界单裂隙及双裂隙入渗模型的建立与参数的确定创造了条件。将实验土槽两侧边界视为相应裂隙间距中点的零通量面,依此不仅可在有限实验土槽长度情况下进行较多不同裂隙间距的实验方案,而且也为利用单裂隙实验资料分析裂隙间距对模型参数的影响成为可能。
On the base of the research of ponding infiltration character of single fracture loess,the problems on how to treat and use the boundary condition and how to analyze the experimental data were studied in this paper.Then,the correlation analysis method was used to analyze the variation characteristics between limited boundary and free seepage without fracture.The maximum influencing scopes of free seepage at different fracture depths were obtained and created the condition for building the model and determining parameter on single and double fractures of the semi-infinite boundary.Furthermore,both sides of testing soil-bin were considered as zero flux planes on middle point of adjacent fractures in this paper.By this assumption,not only the different joint spacing experiment with the limited length of testing soil-bin can be made,but also the experimental data of single fracture could be used to analyze the effect between joint spacing and model parameters.
出处
《土壤通报》
CAS
CSCD
北大核心
2012年第6期1331-1334,共4页
Chinese Journal of Soil Science
基金
国家自然科学基金项目(50779055)资助
关键词
黄土
裂隙
入渗
湿润锋
Loess
Fracture
Infiltration
Wetting front
