煤炭科技2023，Vol.44Issue(6)：64-68,76,6.DOI:10.19896/j.cnki.mtkj.2023.06.014
急倾斜特厚煤层走向长壁综放工作面顶煤运动规律研究
Research on top coal movement law of strike long wall fully-mechanized caving face in steep-inclined thick coal seams
摘要
Abstract
Through similar material simulation experiments and FLAC numerical simulations,the transport law of top coal in strike long wall fully-mechanized caving mining of steep-inclined thick coal seams in Baojishan Coal Mine was studied.By analyzing the character-istics of top coal transport and principal stress distribution,it is shown that the loose drawing body is still an approximate ellipsoid at dif-ferent angles,and the axis is not offset in the direction of coal seam inclination.The angle of the working face has a significant impact on the development height and shape of the drawing body,and also affects the high-level top coal release.The study has guiding signifi-cance for optimizing the parameters of the coal drawing process in the No.704 working face.关键词
急倾斜厚煤层/走向长壁/相似模拟/放出体/运移规律Key words
steep-inclined thick coal seam/strike long wall/similarity simulation/drawing body/transport law分类
矿业与冶金引用本文复制引用
吕伟伟,孔正..急倾斜特厚煤层走向长壁综放工作面顶煤运动规律研究[J].煤炭科技,2023,44(6):64-68,76,6.基金项目
国家自然科学基金项目资助(52104100) （52104100）
