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The disasters in deep underground engineering are mainly caused by the complex geological environment and excavation disturbance of the mechanical properties of rocks. In order to solve the influence of the ground stress in deep mines on the maintenance of underground roadways, the mining, the maintenance and treatment of goaf areas, a copper mine at 900m underground in Yunnan Province is taken as the engineering background to research. The survey line method is used to investigate the rock mass structure on site. Laboratory tests are conducted to obtain mechanical indicators such as compressive, tensile, and shear strength parameters of various ore rocks. On this basis, RQD and RMR classification methods are used to evaluate the quality of the rock mass. The physical and mechanical parameters of the rock mass are discounted in combination with the Hoek-Brown strength criterion, and finally reasonable mechanical parameters of the rock mass are determined.

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Determination of Mechanical Parameters of the Deep Mining Rock Mass Based on Hoke-Brown Criterion

  • 会议论文

  • 发表日期：

    2025年

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  • Ping Lu,
  • Jinliang Zhang,
  • Yiming Wen,
  • Qi Nie,
  • Baoxiong Ruan

摘要

The disasters in deep underground engineering are mainly caused by the complex geological environment and excavation disturbance of the mechanical properties of rocks. In order to solve the influence of the ground stress in deep mines on the maintenance of underground roadways, the mining, the maintenance and treatment of goaf areas, a copper mine at 900m underground in Yunnan Province is taken as the engineering background to research. The survey line method is used to investigate the rock mass structure on site. Laboratory tests are conducted to obtain mechanical indicators such as compressive, tensile, and shear strength parameters of various ore rocks. On this basis, RQD and RMR classification methods are used to evaluate the quality of the rock mass. The physical and mechanical parameters of the rock mass are discounted in combination with the Hoek-Brown strength criterion, and finally reasonable mechanical parameters of the rock mass are determined.