深部强采动大巷硐室修护补强技术——以万家庄煤矿为例  

Repair and Reinforcement Technology for Deep and Strongly Mining Alley Chambers:Taking Wanjiazhuang Coal Industry as an Example

作　　者：申志鑫 SHEN Zhixin(Shanxi Coal Import and Export Group Puxian Wanjiazhuang Coal Industry Co.,Ltd.,Linfen 041204,Shanxi,China)

机构地区：[1]山西煤炭进出口集团蒲县万家庄煤业有限公司,山西临汾041204

出　　处：《科技和产业》2024年第11期218-223,共6页Science Technology and Industry

摘　　要：以万家庄煤业2#煤层深部强采动一号变电所硐室为工程背景,探究深部大巷硐室强采动破坏机理及强采动围岩稳定性控制原理,分析深部强采动大巷硐室修护补强方案,并结合现场工业性试验优化相关支护技术参数。研究结果表明:2#煤层顶板为复合软岩顶底板,极易受到采场周围的岩层运动、应力集中和应力重新分布的影响,导致一号变电所硐室围岩矿压显现剧烈;煤壁前方支承压力幅值随着远离工作面呈现出近场快速增加、远场缓慢降低的趋势;硐室受到的采动影响较为剧烈,在两翼工作面回采期间,围岩最大变形量为155.8 mm,支护效果显著改善,有力地保障了工作面安全高效回采。Taking the No.1 substation chamber in the 2#coal seam of Wanjiazhuang Coal Industry as the background of the project,the damage mechanism of the deep mine chamber and the stability control principle of the strong mining surrounding rock are explored,and the repair and reinforcement plan for the deep strong mining chamber are analyzed.The relevant support technical parameters with the on-site industrial test are optimized.According to the numerical simulation results,the amplitude of the support pressure in front of the coal wall increases rapidly in the near field and decreases slowly in the far field as it moves away from the working face.Due to the superposition of the over-mining stresses on the two wings,the chamber was subjected to severe mining impacts.The main concept of the repair and reinforcement technology for the chamber in the deep,strongly-mined adit is to release and then control-reconstruct and regenerate,which is able to greatly improve the support strength of the deep adit.The maximum deformation of the surrounding rock was 155.8 mm during the mining of the two working faces,which significantly improved the support effect and strongly guaranteed the safe and efficient mining of the working faces.

关 键 词：强烈采动影响 深部复杂硐室 修护补强技术 工业性试验 

分 类 号：TD353[矿业工程—矿井建设]