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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。
According to the Hoek-Brown failure criterion and equal area principle, the main mechanical parameters of engineering rock mass are calculated by the rock mechanics test data and field geological survey results, which can be used for the rock mass classification of underground engineering. The method can well reflect the occurrence conditions and mechanical state of rock mass, deepen the understanding of engineering mechanics properties of rock mass, and provide a more scientific and reasonable basis for the design and construction support of underground engineering. Practice shows that compared with the most commonly used BQ classification, the method in this paper is more scientific and applicable in deep underground engineering.