CAJ | 학술논문

探讨了厚煤层煤壁破坏的机理，结合瑞隆矿8101综放工作面煤壁的主要破坏形式，建立了综放仰采工作面煤壁破坏的力学模型，并对影响煤壁稳定性的因素进行了敏感性分析。研究结果表明：采高、埋深、仰采角度、煤体强度、支架支护强度等对煤壁稳定性影响较大，其中降低采高和提高支护强度、煤壁注浆加固是防治煤壁片帮的有效措施。采用UDEC数值模拟研究了注浆加固煤壁的合理注浆孔径，得出该矿开采条件下棕绳直径为15 mm时注浆效果最佳。
탐토료후매층매벽파배적궤리，결합서륭광8101종방공작면매벽적주요파배형식，건립료종방앙채공작면매벽파배적역학모형，병대영향매벽은정성적인소진행료민감성분석。연구결과표명：채고、매심、앙채각도、매체강도、지가지호강도등대매벽은정성영향교대，기중강저채고화제고지호강도、매벽주장가고시방치매벽편방적유효조시。채용UDEC수치모의연구료주장가고매벽적합리주장공경，득출해광개채조건하종승직경위15 mm시주장효과최가。
Probed into the general mechanism of the coal wall failure in thick coal seam, combined with the main failure form of coal wall in 8101 mining face of Ruilong mine, the mechanical model of rib spalling during the topple mining was established, and the sensitivity analysis was also implemented to study the factors influencing the coal wall stability. The results show that the mining height, confining pressure, support strength, angle of topple mining, strength of coal, etc., have a great influence on the stability of coal wall, and reducing the mining height, improving the support strength, and grouting re-inforcement of coal wall are the most effective measures to prevent the rib spalling of coal wall. The reasonable drilling diameter of grouting reinforcement was further studied through theoretical analysis and UDEC numerical modeling. As a result, the grouting effect with 15 mm in borehole diameter is the best to control rib spalling of coal wall.