| 柴家沟钼矿复杂地层岩心钻探技术 |
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| 引用本文： | 王洪涛.柴家沟钼矿复杂地层岩心钻探技术[J].探矿工程,2017,44(8):37-40. |
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| 作者姓名： | 王洪涛 |
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| 作者单位： | 华北地质勘查局五一四地质大队 |
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| 摘 要： | 柴家沟钼矿地层破碎、裂隙发育、蚀变多样、涌水、完整岩石坚硬，而且地质设计要求大部分为斜孔，钻探施工中遇钻孔漏水、坍塌掉块、进尺缓慢、跑斜严重等技术难题。从钻孔结构、冲洗液配置、护壁堵漏、硬岩钻进、涌水地层加重泥浆的使用、立轴式钻机斜孔施工注意事项等方面总结了钻探施工经验。
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| 关 键 词： | 岩心钻探 斜孔 护壁堵漏 复杂地层 加重泥浆 柴家沟钼矿 |
| 收稿时间： | 2016/9/14 0:00:00 |
| 修稿时间： | 2017/6/18 0:00:00 |
Core Drilling Technology for Complex Strata in Chaijiagou Molybdenum Deposit |
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| WANG Hong-tao.Core Drilling Technology for Complex Strata in Chaijiagou Molybdenum Deposit[J].Exploration Engineering(Drilling & Tunneling),2017,44(8):37-40. |
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| Authors: | WANG Hong-tao |
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| Institution: | 514 Brigade of North China Geological Exploration Bureau |
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| Abstract: | Strata breaking, fracture development, alteration diversity, water gushing and hard intact rock co-exist in Chaijiagou molybdenum deposit, and most of the geological design requirements are inclined holes. The technical difficulties were countered in drilling construction, such as water leakage, collapse and block falling, slow footage and serious inclined drilling. This paper summarizes the experience of drilling construction in borehole structure, flushing fluid solution configuration, wall protection and plugging, hard rock drilling, the use of weighted mud in water gushing formation and the precautions of inclined hole construction with vertical shaft drilling rig. |
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| Keywords: | core drilling inclined hole wall protection and plugging complex strata weighted mud Chaijiagou molybdenum deposit |
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