The paper introduced the technologies and the methods for deep coal prospecting in old mine, that is after drilling through mined out section with pneumatic down hole hammer, the wire-line coring drilling is used in deep construction. The technical problems encountered in the construction and the experiences obtained were discussed.
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张鸿飞.深部找矿钻探施工工艺与方法[J].钻探工程,2012,39(10):26-31.ZHANG Hong-Fei. Construction Technologies and Methods for Deep Coal Prospecting[J]. Drilling Engineering, 2012,39(10):26-31.