| 梧桐庄矿大直径排水孔工程钻探施工技术 |
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| 引用本文： | 和新,尹丽,吴云莺.梧桐庄矿大直径排水孔工程钻探施工技术[J].探矿工程,2009,36(5):33-35. |
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| 作者姓名： | 和新 尹丽 吴云莺 |
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| 作者单位： | [1]河北省地矿局国土资源勘查中心,河北石家庄050081; [2]河北省地矿局水文工程地质勘查院,河北石家庄050021 |
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| 摘 要： | 介绍了梧桐庄矿区孔深646m、终孔直径526mm两口排水孔的钻探施工技术。该2口排水孔深度大，孔径大，垂直度要求高，地层软硬互层变化较大，易缩径，穿层钻进时易形成孔斜，施工难度大，通过采用先用小径钻进、后扩孔的施工方法，并采取合理的钻具组合和泥浆，制定有效的防斜技术措施等，顺利完成排水孔施工，施工质量满足设计要求。
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| 关 键 词： | 大直径排水孔 钻探 垂直度 钻具组合 固井 |
| 收稿时间： | 2008/12/2 0:00:00 |
| 修稿时间： | 2009/4/20 0:00:00 |
Drilling Construction Technology of Large Diameter Drainage Hole in Wutongzhuang Mine |
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| HE Xin,YIN Li and WU Yun-ying.Drilling Construction Technology of Large Diameter Drainage Hole in Wutongzhuang Mine[J].Exploration Engineering(Drilling & Tunneling),2009,36(5):33-35. |
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| Authors: | HE Xin YIN Li and WU Yun-ying |
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| Institution: | HE Xin , YIN LI , WU Yun-ying ( 1. Exploration Center of Territory and Resource of Hebei Province Geology and Mining Bureau, Shijiazhuang Hebei 050081, China; 2. The Hydrogeology and Engineering Geology Prospecting Institute of Hebei Province Geology and Mining Bureau, Shijiazhuang Hebei 050021, China) |
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| Abstract: | The paper introduced the drilling construction technology of drainage holes in Wutongzhuang mine. The 2 holes were of great depth and large diameter in soft-hard alternant stratum, construction was difficult with diameter shrinking and slant borehole. Small-diameter drilling and post-reaming were adopted with reasonable drilling tool assembly, drilling mud and effective deviation preventing measures, and the drainage hole construction was successfully completed. |
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| Keywords: | large diameter drainage hole drilling verticality drilling tool assembly well cementing |
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