裂隙岩体边坡稳定性评价的SVM-Monte Carlo法  

SVM-Monte Carlo Method of Stability Evaluation for Fractured Rock Slopes

作　　者：褚凯敏[1] 沈振中[1] 许军才[1,2] 周志杰[1] 

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]江西省数字国土重点实验室,江西抚州344000

出　　处：《水电能源科学》2016年第3期152-155,共4页Water Resources and Power

基　　金：国家自然科学基金项目(51179062);江西省数字国土重点实验室开放研究基金资助项目(DLLJ201506)

摘　　要：针对现有边坡稳定性评价方法的不足,采用节理密度、节理中心点、节理倾角和节理迹长四个参数来定量刻画随机节理构造,通过产生服从特定概率分布的随机数来描述节理构造的随机性,提出了裂隙岩体边坡稳定性评价的SVM-Monte Carlo法,并通过某边坡实例进行验证。算例结果表明,该方法既能较好地模拟岩体边坡节理构造几何参数随机性的特点,也考虑了岩体边坡强度参数的变异性,结果更加符合实际情况,为含随机节理构造的边坡稳定性评价提供了新方法。Aiming at the shortcomings of the existing methods to evaluate stability of slope,this paper quantitatively describes random joint structure based on four parameters,including the density of joint,the center of joint,the inclination angle of joint and the trace length of joint.It describes the randomness by producing random number that obeys specific probability distribution.On this basis,SVM-Monte Carlo method is proposed for evaluating slope stability of fractured rock mass and is verified by an example of a certain slope.The calculation results indicate that this method can better simulate random geometrical parameters of slope joint structure and take the variability of slope strength parameters into account,which is consistent with actual situation.So,it provides a new method for evaluating slope stability of random joints.

关 键 词：裂隙岩体 随机节理 边坡稳定 SVM MONTE Carlo法 

分 类 号：TU43[建筑科学—岩土工程]