青海夏日哈木镍钴矿区露天采场工程地质条件与岩体质量评价

Engineering geological conditions and rock mass quality evaluation of Xiarihamu nickel-cobalt mining area open pit in Qinghai Province

通过对青海夏日哈木镍钴矿区的现场调查,获得矿区工程地质特征,对调查数据进行分析。根据矿区工程地质调查统计资料、矿岩岩石力学性质试验结果等,采用工程岩体分级标准,对矿区分布的主要岩组进行岩体质量分析评价。将区内岩体工程地质类型划分为4个工程地质岩组,根据岩体基本质量的定性特征和岩体基本质量指标BQ两者相结合确定岩体基本质量级别,为矿区稳定性分析提供了理论依据。

Through the on the spot investigation of the Xiarihamu nickel-cobalt mining area in Qinghai,the engineering geological characteristics of the mining area were obtained,and the survey data were analyzed.According to the engineering geological survey statistics of the mining area and the experimental results of the rock and rock mechanical properties,the rock mass quality analysis and evaluation of the main rock group distributed in the mining area was carried out by using the engineering rock mass classification standard.The engineering geological types of rock mass in the area were divided into four engineering geological rock groups.According to the qualitative characteristics of the basic mass of rock mass and the basic quality index of rock mass BQ ,the basic quality level of rock mass was determined,which was the stability analysis of mining area and provided a theoretical basis.