岩石力学参数计算方法优化及试验验证  

Experimental Verification and Optimization for the Calculation Method of Rock Mechanics Parameters

作　　者：倪晓燕[1,2] 陈占清 龚鹏 

机构地区：[1]中国矿业大学力学与土木工程学院,江苏徐州221116 [2]深部岩土力学与地下工程国家重点试验室,江苏徐州221116

出　　处：《金属矿山》2017年第4期41-44,共4页Metal Mine

基　　金：国家重点基础研究发展计划(973计划)项目(编号:2013CB227900);国家自然科学基金项目(编号:11502229);江苏省研究生创新基金项目(编号:KYLX_1368)

摘　　要：利用数学分析手段,提出了一种适用于单一岩石试样变形参数(包括弹性模量、剪切模量、泊松比)的计算方法。根据蒙特卡洛优化思想对岩样Lame系数和内摩擦角进行构型优化,利用Fortran语言编程实现了优化算法。对岩石试样进行了2、4、6、8、10 MPa围压级别下三轴压缩试验,求得了岩样变形参数和强度参数的平均值。利用计算方法和优化算法对6 MPa围压下某单一岩样的力学参数重新进行计算,结果表明:计算方法和优化算法都是可行的,可供设计计算使用。A calculation method for deformation parameters （ including elasticity modulus, shear modulus, Poisson＇s ratio） of single rock sample is proposed by using mathematical analysis method. According to the Monte Carlo optimization idea, Lame coefficient and internal friction angle of rock sample are optimized. The optimization algorithm is realized by adopting Fortran language. The triaxial compression test for rock samples is conducted under 2,4,6,8,10 MPa confining pressure, the average value of deformation and strength parameters are obtained. The parameters of single rock sample under 6 MPa confining pressure are recalculated by using the calculation method and optimization algorithm proposed in this paper. The results show that the calculation and optimization algorithm is feasible, it can be used to some related design and calculation analysis.

关 键 词：岩石力学参数 计算方法 Lame系数 蒙特卡洛优化 

分 类 号：TD313[矿业工程—矿井建设]