玲珑金矿是我国重要的黄金资源生产基地,而西山矿段是玲珑金矿的主力生产矿区之一.近年来,随着西山矿段资源开发力度的加大,寻找深部隐伏接替资源成为矿山发展的迫切需求.通过对比区域构造和矿体构造特征,发现西山矿段的西部区域与原来主成矿区——东部区域的构造特征存在明显差异.研究发现,108#主矿体受逆断层控制明显,上下盘发生明显位移,其支脉则受张扭性或张性断裂控制,含金支脉多产于张性断裂中.因此,沿108#主脉下盘的张扭性分支构造开展探矿工作,探获盲支脉108支#脉,并通过总结成矿和控矿规律又探获了108支2#脉和108支3#脉,建立并完善了玲珑金矿田108#脉支脉控矿模式.

胶东地区位于华北东部,在胶北隆起地区,由于地质因素,金矿矿床分布极广,区域黄金储备量占全国的四分之一以上,是我国主要的黄金产地之一.本文我们通过对胶东地区近况地址构造进行分析,并且在这基础上进行胶东地区的石英脉型及蚀变岩型金矿床的分布分析,并构建分布结构模型,以期能更好更准确的进行金矿分布和特征定位分析.

Geological disasters in Linglong gold mine mainly take form of goaf subsidence , landslide , surface cracks,backward flood flow ,sudden water surge in the pit ,increased deep bearing pressure ,etc.Among them,the goaf subsidence ,surface cracks ,backward flood flow interact with each other , and are concealed , sudden and destructive , greatly threatening personal safety,surface constructions,mining facilities,roads,farmlands,electric power facilities, etc.Linglong Gold Mine in recent years has been paying attention to the protection of the ecological environment and strengthening the prevention and control of geological disasters ,certain achievements has been made ,and long-term ef-forts will be seen in the mine .

玲珑金矿历经50多a的开采,已经进入深部开采,掘进地应力越来越大,岩爆现象也越来越严重,原来的砂浆锚杆已经不能满足高应力巷道的支护要求,通过引入新型锚喷网支护方式,采用有限元数值计算软件对新旧两种支护方式进行对比分析,为深部巷道掘进找到更合理的支护方式.

山东黄金集团玲珑金矿的深部开拓巷道,地应力越来越大,采用锚喷网+U型钢+底部铺设混凝土支护方式,不但确保了围岩的固有强度,通过应力释放,岩体的承载能力得到充分发挥,巷道的顶板及两帮位移都得到很好的控制,巷道底板采用混凝土封底后,在巷道的内侧形成一个封闭的整体支护结构,对抑制围岩的变形起到显著的效果。

分析了影响山东黄金集团玲珑金矿边界品位的部分影响因素指标,并对生产成本、矿石贫化率、黄金价格3项变动影响因素进行了敏感性分析,得出黄金价格和采矿成本的敏感度大于矿石贫化率。当黄金价格和开采成本向负方向改变时,黄金价格比采矿成本对边界品位的影响要大,当向正方向改变时,黄金价格比采矿成本对边界品位的影响要小。所以,利用低品位资源时,应对产品的价格及开采成本进行更精确的计算,才能保障在低品位矿产资源的利用中获得最大的经济效益。

Phenomenon of rock burst is serious after Linglong Gold Mine in process of deep development,so displacement monitoring was done on roof displacement of chamber in deep part of mining area.Single time displacement amount reduced with time go on,while the change amount was ±2 mm.Accumulated displacement amount increased with the time increasing,the trend slowed down.In the end,total amount of displacement is less than 20 mm.

针对山东黄金集团玲珑金矿的赋存状况及开采技术条件,研究采用浅孔留矿法开采,盘区长度为28.5 m,宽度为1.3 m,垂高为40 m,底部结构为装岩机出矿的平底结构,不留间柱、顶底柱,采场开采结束后进行大量出矿,实践证明该采矿法对急倾斜薄矿体不失为安全、低成本的开采方法。

In order to solve the crisis of mines resources,characteristics of No.51 vein in Linglong gold mine field are carefully researched,and obtain better understant about vein metallogenic features and ore-forming regularity in the deep.Using the characteristics of vein rocks,we find that the No.51 vein is broken,dislocated,interspersed,displaced and parallel intergrowth by lamprophyre in the later period in deep metallogenic conditions,getting good effect in vein rocks prospecting.Combining with the examples of production practice,the comprehensive utilization value is analysised,metallogenic target areas are forecasted in Vein No.51,we suggest that the Vein No.51 is still with large mining use value.Thus,the vision of geological reserves,production and service life of mine are expanded,problems of the continuation production are resolved.