| 淮北煤矿大口径排水孔施工技术 |
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| 引用本文：耿洪州,叶礼明.淮北煤矿大口径排水孔施工技术[J].钻探工程,1994,(4):30-32.. Large Diameter Drainage Hole Drilling Technique in Huaibei Coal Mine[J]. Drilling Engineering, 1994,(4):30-32. |
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| 耿洪州 叶礼明 |
| 淮北矿务局勘探队 |
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| 中文摘要:着重论述了淮北煤矿大口径排水钻孔的施工方法及成井工艺。采用满眼钻具防斜，确定上、中、下扶正器安装的最佳位置，利用喷射钻进提高钻进效率，利用管底逆止阀浮力塞解决下管及注浆的难题。 |
| 中文关键词:排水钻孔，满眼钻具，喷射钻进，逆止阀浮力塞，下管注浆 |
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| Large Diameter Drainage Hole Drilling Technique in Huaibei Coal Mine |
| Geng Hongzhou Ye Liming |
| Geological Brigade of Huaibei Bureau of Mines |
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| Abstract:Description is forcused on the drilling method and completion process of large diameter drainage holes in Huaibei coal mine. Full-sized drilling tools are used for deivation prevention,the best placedment of the upper,middli and lower stabilizers is determined, et drilling is chosen to increase drilling rate,and the check valve type floating plug located at the tube end is employed to tackle tube lowering and grouting problems. |
| keywords:drainage hole, full-sized drilling tool,jet grouting, check valve type floating plug,tube lowering and grouting |
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