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.

<正>2010年4月,我国开始开放邮政业务经营权,这意味着邮政行业开始真正走向市场。如何在竞争中求生存、求发展,成了摆在国内各地邮政单位面前的一大问题。

湖北省黄石市黄石港区人武部抓基层,不求抓"亮点"搞门面工程,而是着眼"打赢",实打实地抓民兵、预备役部队基层建设.前不久,来该部检查民兵工作的总参动员部范晓光部长对他们转变作风抓基层的求实精神,给予了充分肯定.

湖北省黄石市黄石港区人武部部长陶保国自觉按照"三个代表"要求,为国防事业燃烧着人生……先后3次荣立三等功,3次被省军区评为优秀党员,今年"七一"又被黄石军分区推荐为湖北省军区"廉政建设先进个人".