摘要
大采高工作面回采过程中,端头后方顶板不易及时垮落。优选适应性高、安全高效的大采高工作面端头切顶技术与工艺,对于煤矿安全生产具有一定现实意义。通过对高效煤岩静态胀裂剂性能和现场工程应用实践的不断探索和深入,以大柳煤矿1405大采高工作面隅角悬顶问题为研究背景,采用高效煤岩静态胀裂切顶卸压技术,通过优化设计钻孔关键参数及数值模拟分析等技术手段,构建一套适用于大采高强矿压工作面的静态胀裂切顶技术与工艺,使端头顶板实现定向垮落。经实践表明,高效煤岩静态胀裂切顶卸压技术保证了顶板及时垮落,有效防止了端头处坚硬顶板悬顶距离过长对巷道内超前支护段造成强矿压影响。
In the mining process of large mining height face,the roof behind the end is not easy to collapse in time.The optimization of the top-cutting technology and technology at the end of large mining height face with high adaptability,safety and high efficiency has certain practical significance for coal mine safety production.Through the continuous exploration and deepening of the performance of high efficiency coal and rock static expansion cracking agent and the field engineering application practice,takes the problem of hanging roof at the corner of 1405 large mining height working face in Daliu coal mine as the research background,and adopts the technology of high efficiency coal and rock static expansion cracking and pressure relief technology.through the optimization design of drilling key parameters and numerical simulation analysis and other technical means,a set of static expansion cracking roof cutting technology and technology suitable for large mining and high strength mining face is constructed.So that the end roof to achieve directional collapse.The practice shows that the highefficiency coal and rock static expansion and top-cutting pressure relief technology ensures the timely collapse of the roof and effectively prevents the influence of strong ore pressure caused by the long hanging distance of the hard roof at the end on the advance support section of the roadway.
作者
王福奇
李治祥
吴军
高潮
王江宁
任兴云
冯旭超
张涛
WANG Fuqi;LI Zhixiang;WU Jun;GAO Chao;WANG Jiangning;REN Xingyun;FENG Xuchao;ZHANG Tao(Huating Coal Industry Daliu Coal Mine Co.,Ltd.,Huating 744100,China;School of Safety and Emergency Management Engineering,Taiyuan University of Technology,Taiyuan 030024,China;School of Mining Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Shanxi Jichangtai Mine Engineering Technology Co.,Ltd.,Taiyuan 030024,China)
出处
《煤炭技术》
CAS
北大核心
2023年第8期95-99,共5页
Coal Technology
关键词
大采高工作面
切顶工艺
高效煤岩静态胀裂剂
隅角悬顶问题
强矿压影响
large mining height working face
roof cutting technology
high efficiency coal and rock static expansion cracking agent
corner hanging roof problem
strong ore pressure influence
