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对Hoek-Brown准则中地质强度指标GSI评分表格进行定量化研究。构建新的GSI量化取值表格,新的量化取值表格解决了岩体体积节理数不能精确确定的问题,并以岩体完整性系数替换岩块体积来解决对岩体完整性合理的定量化取值问题。该表格也采用了区间数理论来表示地质强度指标GSI的不确定性,更为符合现场岩体力学参数取值的实际情况,考虑了野外现场试验资料选择性获取的可操作性,多指标联合确定GSI的最终交集,确保了GSI定量化取值的合理性,为根据室内岩石力学试验合理获取野外岩体力学参数提供了理论依据和过渡的桥梁。
A quantitative study of the GSI score of the geological strength index in the Hoek-Brown criterion is carried out. A new GSI quantitative value table is constructed. The new quantitative value table solves the problem that the volume joint number of rock mass can not be precisely determined. The rock mass integrality coefficient is used to replace the rock mass volume to solve the quantitative rationality of rock mass integrity Value problem. The table also uses interval number theory to represent the uncertainty of geological intensity index GSI, which is more in line with the actual situation of mechanical parameters of rock mass in situ, taking into account the feasibility of field test data selective acquisition, multi-indicator joint Determine the final intersection of GSI, to ensure the rationality of quantitative GSI value, which provides a theoretical basis and bridge for the reasonable acquisition of field rock mechanics parameters according to indoor rock mechanics test.