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文摘
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赋存于花岗岩中的金矿体，在勘探中的钻探结果被证实对矿体的控制偏差很大，这种“测不准”现象是由于花岗（斑）岩角砾硬度较大，含矿岩石破碎，含金硫化物在钻探过程中因硬度较小常被磨碎，并被泥浆带出钻孔，导致矿化段样品被严重贫化，从而失去探矿价值。应注意施工方法及管理，尽可能地以坑道作为这类矿体的首选勘探手段，慎用“以钻代坑”。 |
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其他语种文摘
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Using drilling for the exploration of gold deposits occurred in granite can make much error on controlling ore body. The cause brought this indeterminacy phenomenon may be that the granite breccia has high rigidity, the rock enriching gold is broken, and the sulfide contained gold become fragmentation in the process of drilling for its low rigidity, and the gold - bearing sulfide was carried with mud fluid, which results in the ore poor. For this reason the exploration significance has been decreased. It is necessary to notice the method and management of project. The best exploration means for this ore deposit is tunnel. It must be careful when take the drilling instead of the tunnel. |
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来源
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地质与勘探
,2008,44(1):80-81 【核心库】
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关键词
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测不准现象
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原因分析
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金矿勘查
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钻探
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地址
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中国科学院地球化学研究所, 矿床地球化学重点试验室, 贵州, 贵阳, 550002
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0495-5331 |
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学科
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地质学 |
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基金
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河南理工大学博士基金
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文献收藏号
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CSCD:3206722
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