浅埋煤层综采面切顶卸压末采贯通技术研究
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摘要
以哈拉沟煤矿12201综采面为工程背景,对浅埋煤层综采面切顶卸压末采贯通关键技术进行研究。通过对工作面贯通后顶板受力状态分析,确定影响浅埋煤层切顶卸压末采贯通的关键参数为顶板预裂高度、预裂切顶角度、预裂爆破孔间距、恒阻锚索支护、垛式支架支护。最终通过理论研究和现场工业性试验,得出了浅埋煤层复合顶板条件下切顶卸压末采贯通回撤新技术的相关工艺参数。研究成果在现场实践工程中得到了验证,工作面实现了安全顺利贯通。
Based on No.12201 coal mining face of Halagou mine as an engineering background,researched the key technology on the holing-through of terminal mining by roof cutting and pressure releasing technique in shallow seam face. The key parameter is as follows: roof cutting blasting hole height, angle, interval distance, constant resistance cable and chock support. Through theory research and industrial experiment, the key parameter of roof cutting and pressure relief is explored. During the terminal mining period, ensure successful and safety holing-through of the terminal mining.
Based on No.12201 coal mining face of Halagou mine as an engineering background,researched the key technology on the holing-through of terminal mining by roof cutting and pressure releasing technique in shallow seam face. The key parameter is as follows: roof cutting blasting hole height, angle, interval distance, constant resistance cable and chock support. Through theory research and industrial experiment, the key parameter of roof cutting and pressure relief is explored. During the terminal mining period, ensure successful and safety holing-through of the terminal mining.
引文
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[2]高登云. 7 m大采高综采工作面末采期间顶板控制技术[J].煤炭科学技术,2014,42(10):121-124.
[3]王高伟.综采工作面回撤通道变形破坏机理研究[J].煤炭技术,2017,36(7):105-107.
[4]孙晓明,刘鑫,梁广峰,等.薄煤层切顶卸压沿空留巷关键参数研究[J].岩石力学与工程学报,2014,33(7):1 449-1 456.
[5]杨汉宏,薛二龙,罗文,等.神华集团切顶卸压自动成巷无煤柱开采技术的应用[J].煤炭科技,2015(3):1-3.
[6]宋润权,谢家鹏.切顶卸压技术在工作面及沿空巷道维护中的应用[J].煤炭科技,2012(3):52-54.
[7]汤朝均,盛建发.切顶卸压护巷技术研究与应用[J].煤炭技术,2015,34(8):78-81.
[8]刘小强,张国锋.软弱破碎围岩切顶卸压沿空留巷技术[J].煤炭科学技术,2013,41(S2):133-134.
[9]刘衍利,黎卫兵,黄星源.切顶卸压爆破技术在沿空留巷中的应用[J].煤矿安全,2014,45(6):132-135.