摘要
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。
Quantitative study was conducted on the GSI score chart in the Hoek-Brown criterion. A new quantitative GSI chart was established and the problem that volumetric joint count of rock mass could not be accurately determined was solved. The rock mass integrity index was used to replace the rock mass volume in order to solve the problem in proper quantitative value determination for the rock mass integrity. This chart also applied the interval number theory to indicate the uncertainty of the geological strength index,which was better in line with the actual situation of onsite value determination for the mechanical parameters of rock mass. It took into account the operability in selective acquisition of field test data and combined multiple indexes to determine the final intersection set of GSI,ensuring the reasonableness of quantitative GSI value determination and providing a theoretical basis and a transition bridge for proper acquisition of field mechanical parameters of rock mass based on indoor rock mechanics tests.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2015年第S2期3805-3812,共8页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金资助项目(41172281
41372269)
国土资源部黄土地质灾害重点实验室开放基金资助项目(KLGLAMLR201505)
