湖南安化天明矿区复杂地层钻探难点及对策研究  

Difficulties and Countermeasures of Complex Formation Drilling in Tianming Mining Area, Anhua, Hunan Province

作　　者：蔡隽 吕敬尊 潘德元[1] 王杰[1] 贺前平 方国庆 CAI Jun;LüJingzun;PAN Deyuan;WANG Jie;HE Qianping;FANG Guoqing(Changsha Natural Resources Comprehensive Survey Center of China Geological Survey,Changsha,Hunan 410600,China)

机构地区：[1]中国地质调查局长沙自然资源综合调查中心,湖南长沙410600

出　　处：《中国锰业》2023年第3期25-31,共7页China Manganese Industry

基　　金：中国地质调查局雪峰弧金锑矿资源勘查项目(编号:ZD20220317)。

摘　　要：天明金矿区位于湖南省益阳市安化县,矿区地层复杂,钻探施工中易遇到岩心破碎、吸水分散剥落导致孔壁坍塌、孔易斜等难题,施工难度大。结合地层特点,通过采用具有良好隔水及抑制性特点的成膜防塌无固相冲洗液护壁,采用改进钻具组合,做好现场防斜技术措施,给予预飘角度等方法控制孔斜,提高了钻进效率和施工质量,大幅度减少了孔内事故的发生,为顺利完成钻孔施工任务奠定了基础。The Tianming gold mining area is located in Anhua County,Yiyang City,Hunan Province.The mining area is complex,and it is easy to encounter core crushing,water absorption dispersion,collapse and other problems,which made the construction difficult.Combined with the characteristics of the stratum,through the use of good flushing fluid wall with water isolation and inhibitory characteristics of film collapse without solid phase,using improved drilling combination,field oblique technical measures,to the drift Angle control hole inclined.It improve the drilling efficiency and construction quality,greatly reduce the accident in the hole,laid the foundation for the smooth completion of drilling construction task.

关 键 词：天明金矿区 复杂地层 成膜防塌无固相冲洗液 孔斜控制 冲洗液改进 

分 类 号：P634[天文地球—地质矿产勘探]