某矿山岩体质量评价与岩体力学参数研究

Quality evaluation and rock mechanical parameters of a mine

采空区稳定性的研究工作需要岩体质量评价结果和矿岩的岩体力学参数做根本支撑。通过现场工程地质岩体结构面的调查、岩芯取样以及室内岩石力学试验等方式,使用四种不同的方法对岩体进行了质量评价,得知大理岩、片岩及矿体为中等到差岩体,并以此质量评价所得的结论作为下一步岩体力学参数研究的基础,采用霍克布朗、摩尔库伦破坏准则以及经霍克和迪德里希斯修正的参数公式再加上加拿大专业软件RocLab的换算,求出矿山三种不同矿岩体的各项力学参数值。

The study on the stability of the goaf requires the results of rock mass evaluation and the rock mass mechanical parameters of the ore rock as the fundamental support. Through the investigation of the structural plane of rock mass in the field engineering geology, core sampling and rock mechanics test in the laboratory, four different methods are used to evaluate the quality of rock mass. It is known that marble, schist and orebody are medium to poor rock mass, and the conclusion of the quality evaluation is taken as the next step of rock mechanics parameter research. On the basis of Hockbrown and Mohr-Coulomb failure criteria, parameter formulas modified by Hawk and Dedrichs and the conversion of Canadian professional software RocLab, the mechanical parameters of three different rock masses in mines are calculated.