CAJ | 학술논문

对Mohr-Coulomb准则和Hoek-Brown准则关系进行分析，提出基于Hoek-Brown准则的连续非线性黏聚力和内摩擦角计算公式，并对Hoek-Brown参数对强度参数的影响及计算公式的合理性进行讨论。研究表明：参数s较其他参数对内摩擦角 i?和黏聚力ci的影响程度小，黏聚力ci随小主应力的增高而增大，内摩擦角 i?则随小主应力的增高而减小；采用提出的强度参数计算公式和Hoek等效强度计算公式，对7种具有非线性强度特征的岩块和锦屏二级水电站工程的大理岩岩体的强度参数进行计算，对比分析可见计算公式结果与岩块室内三轴试验和工程岩体现场大剪试验的强度参数试验结果吻合度较高，表明建议的强度参数计算式在估算岩石材料强度参数时具有较高的准确性，对实际工程具有较强的指导作用。
대Mohr-Coulomb준칙화Hoek-Brown준칙관계진행분석，제출기우Hoek-Brown준칙적련속비선성점취력화내마찰각계산공식，병대Hoek-Brown삼수대강도삼수적영향급계산공식적합이성진행토론。연구표명：삼수s교기타삼수대내마찰각 i?화점취력ci적영향정도소，점취력ci수소주응력적증고이증대，내마찰각 i?칙수소주응력적증고이감소；채용제출적강도삼수계산공식화Hoek등효강도계산공식，대7충구유비선성강도특정적암괴화금병이급수전참공정적대리암암체적강도삼수진행계산，대비분석가견계산공식결과여암괴실내삼축시험화공정암체현장대전시험적강도삼수시험결과문합도교고，표명건의적강도삼수계산식재고산암석재료강도삼수시구유교고적준학성，대실제공정구유교강적지도작용。
Continuously nonlinear formulas of friction angle and cohesion on the basis of Hoek-Brown criterion were proposed,and the impact of Hoek-Brown parameters on strength parameters of Mohr-Coulomb criterion and the rationality of formulas was discussed. The study shows that the material constants has little influence compared with other Hoek-Brown constants on friction angle and cohesion. The cohesion increaseswith the increase of minor principal stress,while friction angle does the reverse. Through the conclusion from the contrast between strength parameters,which computed respectively by formulas in this paper and Hoek recommended equation,and the experimental results get from the triaxial tests of several rock and the in-situ shear tests of a practical project,it alsoindicates that equations proposed in this paper have excellent accuracy and guidance effect on the practical project application.