浩尧尔忽洞金矿矿岩工程地质特征及岩石质量评价

Engineering geological characteristics and rock quality evaluation of ore rock in Haoyaoer Hudong Gold Mine

对浩尧尔忽洞金矿矿岩进行工程地质调查,采用Dips软件对3个研究区899条结构面数据进行分析统计,并绘制相关等密图、极点图、结构面间距直方图和分布频次直方图。采用RMR法在现场进行了岩心调查,矿岩点荷载测试,结构面状态、地下水状态观测,矿岩RQD值统计等工作,对矿岩进行岩石质量评价。综合分析研究结果表明:矿区东坑东部矿岩RMR值为45,属于一般岩体,东坑西部、西坑2个研究区矿岩RMR值都为42,属于一般—较差岩体;矿岩较破碎,3个研究区节理间距分别为0.32 m、0.26 m、0.25 m,间距相对较小,对于岩体的稳定性有较大影响;矿岩主要由近水平和近直立几组结构面构成,岩石破碎,稳定性较差。

The engineering geological survey of the ore rock in Haoyaoer Hudong Gold Mine is carried out.The data of 899 structural planes in 3 study areas are analyzed and counted by Dips software,and the relevant isometric diagrams,pole diagrams,structural plane spacing histograms and distribution frequency histograms are drawn.The RMR method is used to evaluate the rock quality of ore rock in the field,such as rock core test,point load test of ore rock,observation of structural plane state,groundwater state,statistics of RQD value of ore rock and so on.Through comprehensive analysis and study,the results show that the ore rock RMR value in the east of Dongkeng is 45 and the rock mass quality belongs to general rock mass,while the RMR values in the west of Dongkeng and Xikeng are both 42,and the rock quality belongs to the general-poor rock mass;the ore rock is relatively broken,and the joint spacing of the 3 study areas is 0.32 m,0.26 m and 0.25 m respectively,which has a great influence on the stability of rock mass;the ore rock is mainly composed of several groups of near-horizontal and near-vertical structural planes,the rock is broken and the stability is poor.