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在脆性岩石的三轴实验基础上,本文提出方程(σ_1-σ_3)~2=kσ_(σ_1+σ_3-σ_c)+sσ_~2作为脆性岩体的经验破坏准则。和Hoek,Brown准则相比,该准则能更好地拟合三轴试验数据,并推广作为脆性岩体的判据。对延性破坏该准则也表现出较好的适应性。
Based on the triaxial experiment of brittle rock, the equation (σ_1-σ_3) ~ 2 = kσ_ (σ_1 + σ_3-σ_c) + sσ_ ~ 2 is proposed as the empirical failure criterion for brittle rock mass. Compared with Hoek, Brown criterion, this criterion can better fit triaxial test data and generalize it as a criterion for brittle rock mass. The criterion of ductile damage also showed good adaptability.