煤炭科技2023，Vol.44Issue(6)：153-157,162,6.DOI:10.19896/j.cnki.mtkj.2023.06.030
综放开采复合坚硬顶板覆岩破断规律及放煤技术研究
Study on overlying rock fracture law and caving technology of composite hard roof in fully-mechanized caving mining
摘要
Abstract
In order to solve the problem of hard roof,hard top coal is difficult to be broken and drawn with the migration and collapse of roof,resulting in a large area of hanging roof,low recovery rate of top coal and affecting mine safety production and economic benefits in Yushutian coal mine.Based on the engineering background of No.110501 thick coal seam fully-mechanized caving face mining in Yushutian Mine,the UDEC numerical simulation software was used to establish the mining model of the working face,and the fracture law of the composite hard roof of the working face was obtained by combining the field practice and theoretical analysis.Aiming at the problem of top coal recovery rate,the"three zones and three modernizations"fully-mechanized caving mining technology was proposed.Through field application and actual monitoring,the top coal recovery rate has been greatly improved,greatly improving the mine produc-tion efficiency,while ensuring the safety and stability of mine production.关键词
综放开采/坚硬顶煤/覆岩破断/回收率Key words
fully-mechanized caving mining/hard top coal/overlying rock fracture/recovery rate分类
矿业与冶金引用本文复制引用
谈文州,张焙炎,李天棚..综放开采复合坚硬顶板覆岩破断规律及放煤技术研究[J].煤炭科技,2023,44(6):153-157,162,6.基金项目
国家自然科学基金项目(51974294) （51974294）
