摘要
当各向同性圆柱孔周围的三维应力应变分布解决之后，单钻孔三维应力量测技术成为测定各向同性岩体中原岩应力的成功方法。而现场岩体多属各向异性，因此，生产实践促使人们需要进一步考虑各向异性岩体的应力量测问题。由于人们不能用数学方法解算各向异性岩体中圆柱孔周围的三维应力应变分布，为此，作者以三维有限元分析为手段，用反分析方法进行求解，并以解析解实例予以验证，从原理上解决了各向异性应力量测的求解问题，促进了应力量测技术的发展。
As soon as distribution of 3D stress and strain around a homogeneous borehole is established,3D stress measurement by using a single borehole becomes successful in insitu stress measurement in homogenous rock mass.In fact,most of rock mass at site is anisotropic.Therefore,in practice,it is neces sary to measure the problem of stress measurement in anisotropic rock mass.Due to the difficulty in establishment of stress and strain distribution around a bore hole anisotropic rock mass by mathematic method,the authors introduced back analysis method,and found a solution by means of 3D FEM.It was verified by an example.Stress measurement in anisotropic rock mass was resolved in principle and technique of stress measurement was developed.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1994年第2期122-130,共9页
Journal of China Coal Society
关键词
各向异性
反分析法
岩体应力
测量
anisotropy,stress measurement,back analysis method
