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geological core drilling
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geological core drilling
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钻探工程
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geological core drilling
地质岩心钻探
使用专用钻探机械,利用圆筒状钻头、岩心管和钻杆等组合成钻具,在岩石中环状破碎岩石,在孔底中心部分保留一个柱状的岩心,再从孔内取出岩心用以研究地质和矿产情况的钻探。简称地质钻探。是钻探工程学科下最重要的分支学科,是固体矿产地质勘探中采用的主要技术方法。
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