摘要
采用等效的原则确定裂纹前沿应力分布 ,通过岩石力学中广泛应用的 Hoek- Brown准则 ,建立了岩石压剪断裂等效判据 ,并首先将 H- B准则中的参数 m,s与断裂韧度 KIc,KIIc联系起来 ,该判据与试验值有较好的一致性 ,并由此估算了岩体的强度。
The stress distribution of crack tip is determined by the equivalent method. According to the Hoek Brown criterion, which is widely used in rock mechanics, a compression shear crack criterion of rock and the relation are established between m and s of H B criterion and crack toughness K Ic and K IIc . The criterion is satisfied to the test result. Finally, the strength of rock mass is determined.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2000年第4期444-448,共5页
Chinese Journal of Rock Mechanics and Engineering
关键词
压剪断裂
等效判据
破坏准则
强度
节理岩体
compression shear crack, equivalent crack criterion, failure criterion
