摘要
针对青海五龙沟矿区3320平硐89线中段布设的坑道钻孔(SZZK8905、孔深700.20 m)在钻探施工中遇到的憋泵、孔壁坍塌、缩径、回次进尺少、岩心采取率低等问题,在钻机选取、钻孔结构设计、破碎带取心技术、钻井液等方面开展坑道钻探工艺研究,成功完成了该孔的钻探任务。
According to the pump blocking, hole collapse, diameter shrinkage, short footage per round trip and low core recovery appeared in the tunnel drilling of SZZK8905 which was in Wulonggou mine area in Dulan County of Qinghai with 700. 20m in depth, the study on tunnel drilling was carried about rig selection, borehole structure design, coring technology in fracture zone and drilling fluid, and this hole drilling was successfully completed.
出处
《探矿工程（岩土钻掘工程）》
2015年第11期34-37,45,共5页
Exploration Engineering:Rock & Soil Drilling and Tunneling
关键词
坑道钻探
绳索取心
钻探工艺
钻井液
五龙沟矿区
tunnel drilling
wire-line coring
drilling technology
drilling fluid
Wulonggou mining area
