取心钻进技术在穿层钻孔施工中的应用研究.pdfVIP

2015年 第 8 期 中州煤炭 总 第 236期 取心钻进技术在穿层钻孔施工中的应用研究 李 振 、欧立懂、李祥发、张业明2’3,朱建安2’3 ( 1 . 郑州煤炭工业（集团 ）有 限 责 任 公 司 告 成 煤 矿 ，河 南 登 封 452477; 2 . 河南理工大学机械与动力工程学院，河 南 焦 作 454000; 3 . 煤炭安全生产河南省协同创新中心，河南焦作 454000) 摘 要 ：针 对告成煤矿采用普通P D C 无心钻头全断面切割钻进速度慢、钻机台效低的状况，提出一种新型穿层 钻孔施工技术—— 取心钻进技术，克服了全断面切割钻孔施工技术中存在的缺陷和不足。以大功率小型化 的钻机、孔口密封装置及取心钻具组成的取心钻进技术，通过现场与普通全断面切割钻进对比试验，验证了 取心钻进工艺在提高钻进速度方面的优越性。 关键词：取心钻进；穿层钻孔；孔口密封装置 中图分类号：TD231 文献标志码 ： B 文章编号 ： 1003 -0 5 0 6 (2 0 1 5 )0 8 -0 0 3 9 - 0 3 Application Research on Core Drilling Technology in Crossing Hole L Zhen 1，0 u Lidong1， L Xiangfa1， Zhang Yeming2’3， Zhu Jian an2’3 (1. Gaocheng Coal M ine, Zhengzhou Coal Industry {Group) Co. ,Ltd. ,Dengfeng 452477 , China ； 2. School o f Mechanical and Power Engineering, Henan Polytechnic University ,Jiaozuo 454000, China ； 3. The Safety o f Coal Production in Henan Province Collaborative Innovation Center,Jiaozuo 4 5 4 0 0 0 , China) Abstract ： In view of the slow drilling speed and low efficiency in cutting processes of full section face by using common PDC non-core drill b it,a new technology of crossing hole and core drilling was proposed which conquers drawbacks mentioned above. Technology of core drilling and crossing hole consists of high-powered and miniaturization d rill, orifice sealing device and coring drilling tools. Field experiments were conducted to compare with common drilling in full section face, and it is approved that technology of crossing hole and core drilling has significant advantages in improving drilling speed. Keywords： core drilling； crossing hole； orifice sealing