摘要
通过野外对坡沟系统分峁坡和沟坡采样,及原状土室内干密度测定和不同含水量下抗剪强度力学实验,得到了峁坡和沟坡土壤干密度随高程的变化规律,建立了小流域坡沟系统土体的抗剪强度随含水量的变化规律,为小流域土壤侵蚀定量计算和降雨型滑坡侵蚀预报模型参数的确定提供参考。
Based on samples from mound slope and gully slope of slope-gully system in field and dry density measurements indoors, and shear strength test of undisturbed soil with different water content, this paper obtains the change of dry density of soil in mound slope and gully slop with elevation and establishes the change law of shear strength of soil mass in small watershed gully-slope system with the water content. These present a reference to de- termination of parameters for quantitative soil erosion calculation of watershed and rainfall-type slope erosion forecast model.
出处
《自然灾害学报》
CSCD
北大核心
2009年第4期72-77,共6页
Journal of Natural Disasters
基金
国家重点基础研究发展计划项目(2007CB407206)资助
国家科技支撑项目(2006BAD09B02)
西安理工大学优秀博士生科研基金资助项目(207-210009)
关键词
黄土高原
坡沟系统
滑坡侵蚀
干密度
含水量
loess plateau
slope-gully system
landslide erosion
dry density
water content
