摘要
把随机概率模型引入块体理论,在考虑块体几何参数和力学强度随机分布的条件下,采用蒙特卡罗法进行随机模拟,对大小不等的块体形成概率以及不同破坏模式下块体的破坏概率进行计算,推导联合概率与分界边长的函数关系,求出不同块体大小的区间联合概率分布并对不同大小区间的块体稳定性进行综合分析,为节理化岩质边坡的加固提供理论依据,该方法具有重要的工程应用价值。
With introduction of random probability into the block theory and considering a random distribution of geometry parameters and mechanics intensity of block,this paper used Monte Carlo method to conduct random simulation and calculate failure probability of block of different sizes under different failure modes.In the course not only the mechanics intensityi,.e.friction coefficient and cohesion,were taken into account,but the geometrical parameters such as angle of inclination of structural plane,volume of block,area of slip plane and so on were considered.Thereon the formation probability of different block sizes was calculated in the case that structural plane is discoidal.This paper put forward the concept of association probability which could be achieved from failure probability and formation probability of block,then the relationship between association probability and block size could be deduced.After subarea of block according to size,the association probability of distinct block regions was acquired and the block stability within distinct block regions was analyzed synthetically,which offered theory foundation to the reinforcement of jointed rock slope with significant application value.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2007年第1期131-136,共6页
Chinese Journal of Rock Mechanics and Engineering
基金
河海大学水文水资源与水利工程科学国家重点实验室开放研究基金资助项目(2005408911)
关键词
边坡工程
蒙特卡罗法
可靠度
形成概率
破坏概率
slope engineering
Monte Carlo method
reliability
formation probability
failure probability
