https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:31146 V) are taken into account to access the basic BQ value. However, The K_V was usually measured by an indirect acoustic wave approach which often cannot reflected the actual conditions. In this study, a direct measured parameter K GSI is recommended to obtain by means of the GSI system to replace the original K_V, and a new method [BQ]_GSI expressed by the new parameter K_GSI is proposed. In particular, a graphic method is also presented to determine rapidly and rationally the rock mass classification by the X, Y coordinates of the UCS and the K_GSI. In order to further compare the evaluation results and application effects between the [BQ]_GSI and the international rock mass classification systems, a comprehensive solution is carried out. First, the evaluation factors of rock mass qualities from all these system are classified according to three groups: the rock mass inherent parameters, external parameters, and construction parameters. Second, the correlations among these evaluation factors in the new [BQ]_GSI system and the common international systems (i.e. RMR, Q, and RMi) were compared. And the formulas or charts among the three groups are presented. Finally, five hydropower underground excavations are chosen to analysis the comparison results of the [BQ]_GSI system and the international common RMR, Q, or RMi systems. The applicability scope of these international RMR, Q, or RMi systems is also discussed in the context of China’s rock characteristics and geological stress conditions.]]> Sat 24 Mar 2018 08:43:36 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:23006 Sat 24 Mar 2018 07:15:43 AEDT ]]>