老鸦岔金矿矿区地质特征及矿床开采技术条件研究

Study on geological characteristics of Laoyacha gold mining areaand technical conditions for mining deposits

为增加矿山金矿资源,延长矿山开采年限,研究了老鸦岔金矿矿区地质特征及矿床开采技术条件,分析了矿区地层、构造、侵入岩、围岩蚀变等地质特征;研究了5条矿脉的位置、产状、长度、厚度、含矿率等特征;分析了7个矿体的赋存标高、埋深、产状、平均厚度、品位等特征,并对其矿石质量特征、矿石类型和品级、矿体(层)围岩及夹石、矿区内共(伴)生矿产情况等进行了研究;研究了矿床开采技术条件,主要包括水文地质、岩石的物理性质、矿体及顶底板围岩的稳定性、环境地质,得出矿床水文地质、工程地质条件属简单类型,环境地质条件中等,矿床开采技术条件为Ⅱ-3类。研究为后续勘查阶段或未来矿山开发利用打下了良好基础。

In order to increase the mine′s gold resources and prolong the mining life,this paper studied the geological characteristics of the Laoyacha Gold Mine mining area and the technical conditions of ore deposit mining.The geological characteristics of strata,structures,intrusive rocks and wall rock alteration in the mining area were analyzed;the location,occurrence,length,thickness and ore bearing rate of five ore veins were studied;the occurrence elevation,burial depth,occurrence,average thickness,grade and other characteristics of the seven ore bodies were analyzed,and their ore quality characteristics,ore type and grade,ore body(layer)surrounding rock and rock inclusion,and the situation of CO(associated)minerals in the mining area were studied;the mining technical conditions of the deposit are studied,mainly including hydrogeology,physical properties of rocks,stability of ore body and surrounding rock of roof and floor,and environmental geology.It was concluded that the hydrogeological and engineering geological conditions of the deposit are simple,the environmental geological conditions are medium,and the mining technical conditions of the deposit belong to classⅡ-3.The research has laid a good foundation for the subsequent exploration stage or future mine development and utilization.