本文主要研究内容
作者李海军（2019）在《红柳林煤矿浅埋煤层群开采覆岩导水裂隙带发育规律研究》一文中研究指出：陕北侏罗纪煤田赋存丰富的浅埋煤层,随着煤炭资源的消耗,神南矿区各矿逐步进入煤层群下煤层开采,煤层群开采顶板矿压、漏风、突水、地表损害等问题凸显。覆岩垮落和裂隙发育规律是安全绿色开采的基础,亟待研究。论文针对红柳林煤矿4-2煤（上煤层）与5-2煤浅埋煤层群开采条件,通过现场实测、物理模拟、数值计算和理论分析,研究了红柳林煤矿浅埋煤层群覆岩导水裂隙带发育规律。理论分析得出,导水裂隙带的发育高度受覆岩关键层的制约,与关键层的抗拉强度、软岩层的抗应变能力、岩层下部的自由空间高度和工作面的推进距离有关,采用关键层理论对关键层进行判定,分析了不同岩层的极限垮距,给出导水裂隙带高度的预计公式。通过现场施工导水裂隙带观测钻孔SK1和SK2钻孔,采用多种现场测试手段实测覆岩垮落高度。结果表明,4-2煤层开采后,裂隙在基岩段和土层段均有发育,根据SK1钻孔观测,冒落带高度为16.40m,冒采比为5.7;根据SK2钻孔观测,冒落带高度为15.50m,冒采比为5.4,4-2煤层的平均冒采比为5.5。现场实测得出4-2煤层工作面初次来压步距为5560m,平均周期来压步距16.13m,基本顶的周期来压强度3541.7MPa;5-2煤层工作面初次来压步距为6368m;平均周期来压步距14.03m,基本顶平均周期来压强度28.546.4MPa,下煤层工作面的来压步距有所减小,来压强度差异增大。物理相似模拟和数值计算得出的覆岩垮落规律与现场实测基本吻合。研究表明,4-2煤层工作面顶板冒落带高度为14.515.8m,是采高的5.055.5倍;覆岩稳定后裂隙带高度91m,为采高的31.7倍。5-2煤层工作面顶板冒落带高度为26.4m,为采高的4.4倍;裂隙发育高度到达地表,约为采高的31.7倍。通过研究,掌握了煤层群开采的覆岩垮落规律,得出了导水裂隙带发育高度,为红柳林煤矿煤层群高效绿色开采提供了理论依据。
Abstract
shan bei zhu luo ji mei tian fu cun feng fu de jian mai mei ceng ,sui zhao mei tan zi yuan de xiao hao ,shen na kuang ou ge kuang zhu bu jin ru mei ceng qun xia mei ceng kai cai ,mei ceng qun kai cai ding ban kuang ya 、lou feng 、tu shui 、de biao sun hai deng wen ti tu xian 。fu yan kua la he lie xi fa yo gui lv shi an quan lu se kai cai de ji chu ,ji dai yan jiu 。lun wen zhen dui gong liu lin mei kuang 4-2mei （shang mei ceng ）yu 5-2mei jian mai mei ceng qun kai cai tiao jian ,tong guo xian chang shi ce 、wu li mo ni 、shu zhi ji suan he li lun fen xi ,yan jiu le gong liu lin mei kuang jian mai mei ceng qun fu yan dao shui lie xi dai fa yo gui lv 。li lun fen xi de chu ,dao shui lie xi dai de fa yo gao du shou fu yan guan jian ceng de zhi yao ,yu guan jian ceng de kang la jiang du 、ruan yan ceng de kang ying bian neng li 、yan ceng xia bu de zi you kong jian gao du he gong zuo mian de tui jin ju li you guan ,cai yong guan jian ceng li lun dui guan jian ceng jin hang pan ding ,fen xi le bu tong yan ceng de ji xian kua ju ,gei chu dao shui lie xi dai gao du de yu ji gong shi 。tong guo xian chang shi gong dao shui lie xi dai guan ce zuan kong SK1he SK2zuan kong ,cai yong duo chong xian chang ce shi shou duan shi ce fu yan kua la gao du 。jie guo biao ming ,4-2mei ceng kai cai hou ,lie xi zai ji yan duan he tu ceng duan jun you fa yo ,gen ju SK1zuan kong guan ce ,mao la dai gao du wei 16.40m,mao cai bi wei 5.7;gen ju SK2zuan kong guan ce ,mao la dai gao du wei 15.50m,mao cai bi wei 5.4,4-2mei ceng de ping jun mao cai bi wei 5.5。xian chang shi ce de chu 4-2mei ceng gong zuo mian chu ci lai ya bu ju wei 5560m,ping jun zhou ji lai ya bu ju 16.13m,ji ben ding de zhou ji lai ya jiang du 3541.7MPa;5-2mei ceng gong zuo mian chu ci lai ya bu ju wei 6368m;ping jun zhou ji lai ya bu ju 14.03m,ji ben ding ping jun zhou ji lai ya jiang du 28.546.4MPa,xia mei ceng gong zuo mian de lai ya bu ju you suo jian xiao ,lai ya jiang du cha yi zeng da 。wu li xiang shi mo ni he shu zhi ji suan de chu de fu yan kua la gui lv yu xian chang shi ce ji ben wen ge 。yan jiu biao ming ,4-2mei ceng gong zuo mian ding ban mao la dai gao du wei 14.515.8m,shi cai gao de 5.055.5bei ;fu yan wen ding hou lie xi dai gao du 91m,wei cai gao de 31.7bei 。5-2mei ceng gong zuo mian ding ban mao la dai gao du wei 26.4m,wei cai gao de 4.4bei ;lie xi fa yo gao du dao da de biao ,yao wei cai gao de 31.7bei 。tong guo yan jiu ,zhang wo le mei ceng qun kai cai de fu yan kua la gui lv ,de chu le dao shui lie xi dai fa yo gao du ,wei gong liu lin mei kuang mei ceng qun gao xiao lu se kai cai di gong le li lun yi ju 。
论文参考文献
论文详细介绍
论文作者分别是来自西安科技大学的李海军，发表于刊物西安科技大学2019-10-15论文，是一篇关于浅埋煤层论文,煤层群开采论文,导水裂隙带论文,覆岩运动论文,绿色开采论文,西安科技大学2019-10-15论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自西安科技大学2019-10-15论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：浅埋煤层论文; 煤层群开采论文; 导水裂隙带论文; 覆岩运动论文; 绿色开采论文; 西安科技大学2019-10-15论文;