摘要
分别采用极限平衡法和数值模拟方法,对孙家崖隧道工程附近大坪滑坡群中Ⅲ号滑坡带上的两个剖面在工况一(自重)和工况二(自重+暴雨)时的稳定性进行了计算分析.利用极限平衡法得出了大坪滑坡群Ⅲ号滑坡带上、下滑坡体在两种工况下的危险滑动面及其相应的安全系数.利用FLAC3D有限差分软件建立了大坪滑坡群Ⅲ号滑坡带两个计算剖面的数学模型,模拟了Ⅲ号滑坡带的上、下滑坡体在两种工况下的危险滑动面.与极限平衡法得出的结果比较可知:利用FLAC3D有限差分软件数值模拟是一种简单易行的判断边坡稳定性的方法.
The stability of two profile with No. Ⅲ landslide of Daping landslide group near the tunnel engineering of Sunjiaya was calculated and analyzed in working condition one （Gravity） and two （Gravity＋ Rainstorm） by using limit equilibrium method and numerical simulation method respectively in this paper. The dangerous sliding surface and its corresponding safety coefficients of the upper and lower landslide mass in Daping landslide group were obtained by using limit equilibrium method at two different work conditions. The model of numerical simulation of two profiles was established and the dangerous sliding surface was calculated by using FLAC^3D at the upper and lower landslide mass in No. Ⅲ landslide group under two different working conditions. FLAC^3D is a simple and easy method to analyze the stability of slope compared with limit equilibrium.
出处
《兰州交通大学学报》
CAS
2012年第4期57-61,共5页
Journal of Lanzhou Jiaotong University
关键词
滑坡
稳定性
数值模拟
隧道
landslide
stability
numerical simulation
tunnel
