论文部分内容阅读
河北省地矿局第三地质大队自2012年开始使用Φ72mm×6mm绳索取芯钻杆施工矿产勘查钻孔,取得了较好的业绩。介绍了钻杆的主要参数、配套使用的设备和工具、钻进工艺及取得的成果。
The Third Geological Brigade of Hebei Bureau of Geology and Mineral Resources has been using the Φ72mm × 6mm cord coring drill pipe to mine mineral exploration holes since 2012, and has achieved good results. Described the main parameters of the drill pipe, supporting the use of equipment and tools, drilling technology and the results achieved.