西安科技大学学报2017，Vol.37Issue(1)：51-56,6.DOI:10.13800/j.cnki.xakjdxxb.2017.0109
盐锅峡黑方台黄土塬塬坡地下水浸润带研究
Underground water infiltration area of slope at the edge of loess "yuan",Heifangtai,Yanguoxia
摘要
Abstract
The irrigation activity is often occurred in loess "yuan" region. This activity not only keeps changing the underground water infiltration area,but also obviously affects the stability of the slope at the edge of loess"yuan"("yuan"slope for short) ,and often causes landslide disaster. Taking a typical slope at the edge of loess "yuan" in Heifangtai,Yanguoxia,Yongjing county,Gansu province as an example, we put forward a concept called "Infiltration ratio of slope mass". For exploring the function of the evolvement feature of underground water phreatic stripe and analysing the relationship between groundw-ater phreatic stripe and the stability of slope,we investigated the characteristics of slope shape and un-derground water. We also carried out experimental analysis and numerical simulation. Two important con-clusions have been drawn:①there is an quadric relationship between the change of the frontal surface of the underground water infiltration area and the rise-fall of underground water level,i. e.,the rise of the frontal surface of the underground water infiltration area is related to the rising velocity of the under-ground water level,which presents positive correlation with time. The expression is s( x,t) =vtM( x,t) .②The "Infiltration ratio of slope mass"(ζ) is closely related to the stability of slope,and the'ζ' has an knee point:when ζ≤0. 170,the stability coefficient decreases slowly and has little influence on slope;when ζ≥0. 170,the stability coefficient decreases sharply and has obviously influence on slope.关键词
坡体浸润比/塬坡/地下水浸润带/数值模拟Key words
infiltration ratio of slope mass/loess "yuan"/groundwater phreatic stripes/numerical simu-lation分类
矿业与冶金引用本文复制引用
王念秦,杨盼盼,王得楷,魏精瑞..盐锅峡黑方台黄土塬塬坡地下水浸润带研究[J].西安科技大学学报,2017,37(1):51-56,6.基金项目
国家自然科学基金(41572287) （41572287）
国家自然科学基金(41130753) （41130753）
陕西省科技统筹创新工程计划项目(2013KTCL03-15) （2013KTCL03-15）
陕西省煤田地质局科技计划项目(JB2014-4) （JB2014-4）
