【摘要】 岩体质量的评价对于各类大型建筑物特别是地下工程建筑物的安全性具有十分重要的作用。文章基于岩石质量指标(RQD)和岩体块度指数(RBI)的理论,通过对甘肃北山1号钻孔的岩心实测资料证明,岩体块度指数在一定程度上能反映岩体的完整性与相应力学性质的变化特点,同时给出钻孔附近岩体质量分类,进而与岩石质量指标所获得的钻孔附近岩体质量评价分级进行对比。对比结果表明:岩体块度指数在岩石质量评价中能更准确地反映其优越性,具有更为显著的工程意义。更多还原

【Abstract】 Rock mass quality assessment plays an important role in the security for all kinds of large-scale buildings,especially for the underground buildings.In this paper,based on two parameters of RQD and RBI,taking the Borehole BS01 as example,lots of measured data prove that the rock block index can reflect the integrity and corresponding variation of mechanical properties of core from Borehole BS01 to some extent.Meanwhile,the rock mass classification around the Borehole BS01 is given in this paper.Finally,comparison of the results for rock mass assessment between RBI and RQD is made.The research result shows that the rock block index has remarkable significance in engineering and advantages in rock mass quality assessment.更多还原