水平定向钻孔在大佛寺煤矿瓦斯抽采中的优势探讨  

Discussion of the Advantages of Horizontal Directional Borehole for Gas Drainage in Dafosi Coal Mine

作　　者：何建华 张进军 昝军才 许超 

机构地区：[1]陕西彬长矿业集团有限公司,陕西咸阳712000 [2]陕西彬长集团大佛寺矿业公司,陕西彬县713500 [3]中煤科工集团西安研究院,陕西西安710077

出　　处：《探矿工程（岩土钻掘工程）》2012年第8期36-38,53,共4页Exploration Engineering:Rock & Soil Drilling and Tunneling

摘　　要：煤矿井下水平定向钻孔在煤矿瓦斯抽采中具有明显的技术优势。通过对大佛寺煤矿常规钻孔工作面瓦斯治理技术的分析,指出了其中不足;经过对定向长钻孔钻进工艺、布孔技术进行分析以及通过大佛寺煤矿现场应用,得出定向长钻孔有利于实现工作面瓦斯区域集中抽采的结论;瓦斯抽采统计数据分析对比证明定向长钻孔瓦斯抽采效率要明显优于常规钻孔。Underground horizontal directional borehole in coal mine has more technalogieal advantages than the conventional bore hole in gas drainage. This paper analyzed the gas control technology of working face in conventional borehole of Dafosi coal mine with the disadvantages being pointed out. Based on the analysis on the drilling technology and borehole arrange- ment of long directional borehole and the field application, the conclusion is that the directional borehole is good for the centralized regional gas drainage in the working face. The data of the gas drainage proves that the gas drainage efficiency of the directional borehole is better than the conventional borehole.

关 键 词：水平定向钻进 瓦斯抽采 区域集中抽采 抽采效率 大佛寺煤矿 

分 类 号：P634.7[天文地球—地质矿产勘探]