CAJ | 학술논문

云南某露天边坡岩体主要以大理岩化灰岩为主，边坡岩体整体呈中风化，随着后续开采，边坡的安全问题将制约矿山的发展。黏聚力（c）和内摩擦角（φ）是影响边坡工程和地下工程稳定性的主要因素，研究通过多种方法获得岩体力学参数，对比了由Hoek-Brown强度准则和岩体直剪试验得出的岩体参数，使用敏感性分析理论分析了内摩擦角和黏聚力对某露天矿岩质边坡的安全系数的影响。结果表明，Hoek-Brown强度准则得出的岩体抗剪强度参数比较可靠；在黏聚力和内摩擦角取值较小时，对安全系数的敏感性差异不明显，当二者取值较大时，以2%参数变化率为临界点，内摩擦角对岩质边坡的稳定性更显著。
운남모로천변파암체주요이대리암화회암위주，변파암체정체정중풍화，수착후속개채，변파적안전문제장제약광산적발전。점취력（c）화내마찰각（φ）시영향변파공정화지하공정은정성적주요인소，연구통과다충방법획득암체역학삼수，대비료유Hoek-Brown강도준칙화암체직전시험득출적암체삼수，사용민감성분석이론분석료내마찰각화점취력대모로천광암질변파적안전계수적영향。결과표명，Hoek-Brown강도준칙득출적암체항전강도삼수비교가고；재점취력화내마찰각취치교소시，대안전계수적민감성차이불명현，당이자취치교대시，이2%삼수변화솔위림계점，내마찰각대암질변파적은정성경현저。
The angle of internal friction and cohesion are main elements which affect the stability of slope project and underground project. This paper uses the sensitivity analysis theory to analyze the angle of internal friction and cohesion of its influence on the safety factor of certain open pit mine slope. The rock mass mechanical parameters are analyzed by applying Hoek-Brown failure criterion and rock mass direct shear test. The research result indicates that rock mass mechanical parameters applying Hoek-Brown failure criterion are credible;the sensitivity of two factors are similar when the two factors are small. Considering the parameters at 2 % rate for the critical point, internal friction Angle of rock slope stability is more significant when the two factors are comparatively large.