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现代矿业 ›› 2017, Vol. 33 ›› Issue (11): 70-74.

• 地质·测量 • 上一篇    下一篇

贵州锦丰金矿岩体工程地质特征及RMR质量评价

刘 超 范文亮 程文文 闵忠鹏   

  1. 长春黄金研究院
  • 出版日期:2017-11-25 发布日期:2018-03-01

Engineering Characteristics and Quality RMR Evaluation Method of the Rock Mass in Jinfeng Gold Mine in Guizhou Province

Liu Chao Fan Wenliang Cheng Wenwen Min Zhongpeng   

  1. Changchun Gold Research Institute
  • Online:2017-11-25 Published:2018-03-01

摘要:  结合贵州锦丰金矿工程地质调查成果,采用RMR法分别从岩石完整程度、单轴抗压强度、节理间距、地下水状态、节理状态以及节理产状对工程施工的影响程度等方面对该矿270,290m中段E3段进行了岩石质量评价。结果表明:①矿区整体岩石等级为Ⅳ级,属于较差岩体类型;②倾向2°、倾角54°和倾向180°、倾角72°两组方向岩体结构面为区内最弱结构面,对岩体质量稳定易造成较大影响,采矿工程施工时应避开该方向。

关键词: 金矿,  工程地质调查,  RMR岩石质量评价,  最弱结构面,  单轴抗压强度

Abstract: Based on the engineering geological investigation results of Jinfeng Gold Mine in Guizhou Province,the RMR method is used to evaluate the rock quality in E3 section in 270 m and 290 middle sections of the mine from the six aspects of rock integrity,uniaxial compressive strength,joint spacing,groundwater state,joint state and the influence degree of joint occurrence to engineering construction.The study results show that:①the overall rock quality grade is Ⅳ level,the rock quality is poor;②the two groups rock mass structural planes with 2° tendency,54° inclination angle and 180° tendency,72° inclination angle are the weakest structural planes in the mining area,which affect the rock quality stability seriously,therefore,during the construction of mining engineering,the above directional structural planes should be avoided.

Key words: Gold mine, Engineering geological investigation, RMR rock quality evaluation, Weakest structural plane, Uniaxial compressive strength