煤田深孔补采煤心施工技术

Construction Technology of Supplementary Coal Coring in Deep Hole of Coalmine

摘要:

在煤田岩心钻探孔施工中，经常会出现丢失煤层现象，必须补采煤心，以满足地质设计要求和有关煤田地质规程。在河南省禹州市张得煤田矿区的钻探施工中，摸索并掌握了一套深孔补采煤心的施工技术，利用偏心楔补打斜孔，有效解决了深孔（1000 m以下）补采煤心的问题，并完全满足地质设计要求。

Abstract:

Coal seam is often lost in coalmine coring drilling, and supplementary coal coring is necessary to satisfy the geological design requirement and related geological specification. In the exploration drilling construction of Zhangde coalmine in Henan, the technology of supplementary coal coring in the deep hole was probed and developed, inclined hole was made with eccentric wedge to finish supplementary coal coring in the borehole of more than 1000m.