焦家金矿破碎岩体变形破坏规律研究
Study on the deformation and failure patterns of fractured rock mass in Jiaojia Gold Mine
刘军晓1
作者信息
摘要
焦家金矿-570～630 m中段矿(岩)体节理裂隙发育,易出现楔形不稳定结构,进而发生岩体冒落.对岩体进行了地质钻孔、结构面条件调查等得出,焦家金矿岩体较为破碎,节理发育,节理产状分布范围广.对开采扰动下巷道收敛变形规律进行研究与总结,并通过雷达测试分析焦家金矿巷道破坏深度,损伤深度基本保持在 2m,存在较多的结构弱面,需及时采取加固措施.此研究对该处矿体的支护等做出合理规划,进一步指导采场结构参数的合理选取,以确保该矿段的安全生产.对类似矿山破碎矿体的治理条件有一定的借鉴意义.
Abstract
The ore(rock)bodies between the-570 m and-630 m levels in Jiaojia Gold Mine are characterized by well-developed joints and fissures,prone to forming wedge-shaped unstable structures,leading to rock mass col-lapse.Geological drilling and structural surface condition surveys indicate that the rock mass in Jiaojia Gold Mine is relatively fractured,with well-developed joints and a wide range of joint occurrence distributions.This study investi-gates and summarizes the convergence deformation patterns of roadways under mining disturbances.Radar testing and analysis reveal that the damage depth of the roadways in Jiaojia Gold Mine generally remains at about 2 m,with many weak structural surfaces present,necessitating timely reinforcement measures.This research provides a rational plan for the support of the ore body and guides the reasonable selection of stope structural parameters to ensure safe production in this mining section.It offers valuable insights for managing fractured rock mass in similar mines.
关键词
岩体变形破坏分析/岩体性质/开采扰动/破碎矿体/结构面/雷达测试/采场结构参数Key words
rock mass deformation and failure analysis/rock mass properties/mining disturbance/fractured ore body/structural plane/radar testing/stope structure parameter引用本文复制引用
基金项目
国家自然科学基金面上项目(51974043)
出版年
2024
NETL
NSTL
万方数据