摘要
根据断续节理岩体结构的力学效应和压剪断裂破坏特征，用Ｈｏｅｋ－Ｂｒｏｗｎ经验准则预测含断续节理岩体的强度，建立强度参数ｍ，ｓ值与断续节理的几何尺寸、结构形式以及岩桥和节理面物理力学参数之间的定量关系，阐明含断续节理岩体强度的各向异性特征，提出合理确定断续节理岩体强度参数ｍ，ｓ的定量分析法。
On the basis of the compressive shear fracture behaviour of rockmass containing intermittent joints, the strength anisotropy of this kind of rock mass is discussed. The currently used Hoek Brown criterion to evaluate the strength of the rock mass is demonstrated quantitatively to be determined by the strength of rock bridges and joint surfaces of the jointed rock mass. The influences of the orientation, length and spatial arrangement of joints on the strength anisotropy are discussed quantitatively. The method to evaluate the parameters m and s in Hoek Brown criterion is presented.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
1998年第4期366-371,共6页
Chinese Journal of Rock Mechanics and Engineering
关键词
断续节理
各向异体
岩体强度
intermittent joints, strength anisotropy, rock mass, Hoek Brown criterion
