摘要
介绍了最新的用于估计完整岩石或节理岩体剪切强度的半经验准则Hoek-Brown屈服准则。结合岩质边坡工程并基于强度折减法计算边坡安全系数,与等效Mohr-Coulomb屈服准则数值模拟对比,得出Hoek-Brown屈服准则采用基于应力水平的塑性流动法则,考虑了岩体结构、岩块强度、应力状态等多种因素的影响,能很好地反映岩体的非线性破坏特征及机理,符合节理岩体的变形和破坏特点。
The paper introduced the newest semi empirical criterion Hoek-Brown yield used to estimate shearing strength of complete rock or the jointed rock mass. In combination with slope project and based on the intensity discount, the side slope safety coefficient was computed, simulation was compared with the equivalent Mohr-Coulomb yield criterion, the use of the Hoek-Brown yield criterion is based on the plastic flow principle of stress level, rock mass structure, rock strength, stress condition and other influencing factors were considered, reflecting well the nonlinear destruction characteristic and mechanism of rock mass, conforming to the jointed rock mass distortion and destruction characteristic.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2009年第3期53-56,共4页
Coal Geology & Exploration
