人民长江2016，Vol.47Issue(22)：79-82,4.DOI:10.16232/j.cnki.1001-4179.2016.22.017
干湿循环对水库滑坡渗透系数影响的试验研究
Test study on effect of drying-wetting cycles on permeability coefficient of reservoir landslide
摘要
Abstract
The permeability of reservoir landslide is influenced by drying-wetting cycle induced by reservoir water level fluc-tuation. Based on the original large permeability meter, we developed the experimental apparatus capable of measuring the per-meability coefficient under wetting-drying cycle. On the basis of undisturbed gravel soil, the remolded samples with different gravel content and porosity ratio were prepared to explore the relationship between the permeability coefficient of reservoir land-slide and times of drying-wetting cycles, and the effect of drying-wetting cycle on gravel soil permeability coefficient was stud-ied. The results show that the drying-wetting cycle has a remarkable impact on the samples of smaller porosity ratio and the per-meability coefficient of these samples has the largest increment. According to the microstructure of gravel-soil, we carried out a preliminary analysis on the variation mechanism of gravel soil permeability coefficient. The research results can provide reference for determining the permeability coefficient of gravel soil in landslide stability analysis.关键词
碎石土/干湿循环/渗透系数/渗透试验/水库滑坡Key words
gravel soil/drying-wetting cycle/permeability coefficient/permeability test/reservoir landslide分类
天文与地球科学引用本文复制引用
张国栋,邓全胜,李泯蒂,徐志华,李学良,廖爱明,卢书强..干湿循环对水库滑坡渗透系数影响的试验研究[J].人民长江,2016,47(22):79-82,4.基金项目
湖北省科技支撑计划(2015BCE038) （2015BCE038）
湖北省自然科学基金创新群体(2012FFA040) （2012FFA040）
湖北省自然科学基金项目(2014CFB677) （2014CFB677）
