作　　者： ; ;

机构地区： 长安大学公路学院

出　　处： 《广西大学学报（自然科学版）》 2013年第1期138-143,共6页

摘　　要： 为合理、有效地确定岩石强度指标,区别于常规室内试验获得岩石单轴抗压强度Rc的方法,对不同风化程度及岩性的几种岩石,采用岩石点荷载试验获得点荷载强度指数Is(50),经换算后得到岩石等效的单轴抗压、抗拉强度指标。通过试验分析认为该指标适用于Rc>60 MPa的坚硬岩石,证明采用点荷载指标换算值获得的岩石强度指标可较好地应用于岩石坚硬程度划分、岩体质量分级、区域地质调查及岩体强度分析等方面。 In order to determine the rock strength in a reasonable and effective way, considering the rocks of different weathering degrees and lithology, a point load test instead of the conventional in- door test for rock uniaxial compressive strength was adopted, and the equivalent uniaxial compressive and tensile strength after conversion was obtained. The experimental analysis verified that the strength index is applicable to the hard rock with strength larger than 60 MPa, demonstrating that the rock strength index given by the equivalent value of the point load index can be used to identify the rock hardness, rock mass, regional geology and rock strength.

关 键 词： 岩石强度指标 单轴抗压强度 岩体 点荷载试验 岩体分级

领　　域： [建筑科学] [建筑科学]