摘要
部分矿井的煤层中存在错综复杂的废弃巷道,工作面回采过程中支架不接顶,容易发生冒顶事故,影响安全生产。以母杜柴登煤矿30207工作面为工程背景,开展了高水材料墩柱过空巷技术的研究。建立工作面过空巷顶板的力学模型,进行受力分析,得出过空巷期间支架的临界工作阻力,分析技术难点。提出了停采等压、高水材料墩柱和支架工作阻力保障等措施。应用表明,过空巷期间,巷道顶板稳定,工作面未发生大面积片冒,取得了显著的经济和社会效益。
There are intricate abandoned roadways in some coal seams of mines,and the supports do not connect to the roof during the mining process,which can easily lead to roof collapse accidents and affect safety production.Based on No.30207 Face of the Muduchaideng Mine,research was conducted on the technology of using high water material pillars to pass through empty roadways.A mechanical model of the roof of the working face passing through the goaf was established,and the stress analysis was carried out to obtain the critical working resistance of the support during the passage through the goaf,and the technical difficulties were analyzed.Measures such as stopping mining and ensuring the working resistance of high water material piers,columns,and supports were proposed.The application showed that during the passage of empty tunnels,the roof of the tunnel was stable,and there was no large-scale collapse of the working face,achieving significant economic and social benefits.
作者
王宇飞
秦迎
何万顺
席智超
Wang Yufei;Qin Ying;He Wanshun;Xi Zhichao(Ordos Yihua Mining Resources Co.,Ltd.,Ordos 017318,China;Lugou Mine of Zhengzhou Coal Industry(Group)Co.,Ltd.,Zhengzhou 450042,China;Zhongyu Yuetai(Beijing)Technology Co.,Ltd.,Beijing 101300,China)
出处
《煤炭与化工》
2025年第6期36-39,共4页
Coal and Chemical Industry
关键词
超长工作面
大断面
高水材料墩柱
停采等压
ultra long working face
large cross-section
high water material pier column
stop production and equal pressure
