江沿金矿勘查中“白眼”现象及原因分析

The non-mineral drilling phenomenon and the reasons in Jiangyan gold mine exploration

在金矿勘查过程中钻探的控制效果不佳,与坑道见矿情况偏差很大,甚至导致丢矿、漏矿情况的发生,这就是庞绪成博士提出的"测不准"现象。文章就江沿金矿的"白眼"现象即钻孔不见矿问题进行了分析,认为造成这种现象的原因一方面是由于金的矿化不均匀,代表性较差;另一方面是由于含金硫化物硬度小,在钻探过程中容易磨碎而被泥浆带出钻孔,导致严重贫化造成的。因此,在勘查中应注意方法的选择和工程的施工管理,慎用以钻代坑。

It is ineffective of drilling in gold mine exploration. It may lead to lost mine for the large deviation to the tunnel. This is the ＇ indeterminacy phenomenon＇ proposed by Dr. PANG Xu - cheng. In this paper,it is analyzed the problem non - mine drilling phenomen in Jiang yan gold mine. The reason is seriously depleted for the poor representation as the uneven gold mineralization and the friable gold -bearing sulfide be brought out by mud as it hardness. For this reason, it is necessary to notice choosing of method and management of project in the exploration,and careful when take the drilling instead of the tunnel.