摘要
雨水入渗改变了岩质边坡非饱和区渗流场的分布,是引发边坡滑坡的主要因素之一.在极限平衡理论和非饱和土抗剪强度理论基础上,引入了渗透力的概念,利用有限单元法进行了降雨条件下岩质边坡稳定性的分析.最后,利用编制的边坡稳定程序进行了算例分析,结果表明,岩体边坡的稳定安全系数随着雨水的不断渗入在逐渐地降低,即降雨入渗对边坡的稳定具有不利影响.
Rainwater infiltration changes the distribution of seepage flow field in unsaturated zone of slope, which is one of the main factors inducing the rock slope to slip. The conception of seepage force is introduced and the finite element method is used to analyze the stability of rock slope under rainfall, based on theories of limiting equilibrium and the shear strength of unsaturated earth. An example is analyzed using the designed program for slope stability. Results show that the stability safety coefficient of rock slope is gradually reduced with continuous rainwater seepage, which indicates that the rainwater infiltration has bad effect on slope stability.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2009年第10期202-205,共4页
Journal of Harbin Institute of Technology
基金
重庆交通大学山区道路建设与技术维护重点实验室开放基金项目
关键词
稳定
非饱和
有限单元法
渗透力
stability
unsaturated
finite element method
seepage force
