基于Hoek-Brown准则的岩体分级法在地下工程中的应用

根据Hoek-Brown破坏准则和等面积原则，通过岩石力学试验数据和野外地质调查结果，算出工程岩体主要的力学参数，可用于地下工程的岩体分级。该方法能够较好地反映岩体的赋存条件和力学状态，对岩体的工程力学性质认识更加深入，为地下工程设计和施工支护提供更加科学、合理的依据。实践表明，相比于最常用的BQ分级法，文中方法在深埋地下工程中更加科学、适用

Classification of rock masses based on Hoek-Brown criterion and its application to underground projects

According to Hoek-Brown failure criterion and equivalent-area principle, strength parameters of engineering rock masses can be estimated by data from lab test and field geological survey. These parameters are naturally applied to engineering classification of rock masses. In terms of deep-buried engineering, this classification practically reflects local environment and mechanical states of rock even better than traditional BQ classification.