采矿与安全工程学报2025，Vol.42Issue(2)：282-293,12.DOI:10.13545／j.cnki.jmse.2023.0011
长壁工作面开采时间间隔对倾向主断面地表沉陷的影响研究
Study on the influence of mining interval of longwall panels on surface subsidence of inclined main section
摘要
Abstract
Underground longwall mining inevitably lead to strata movement,surface subsidence,as well as a series of resultant environmental problems.Most of the existing researches focused on the sur-face subsidence characteristics and dynamic development process of a single working face,and there is a lack of research on the effect of multi-face mining intervals on surface subsidence.For this reason,nu-merical modelling was conducted to study the influence of different mining intervals on the subsidence process,and the data of mining interval and maximum subsidence at home and abroad were analyzed and compared with the numerical modelling results.Subsequently,the dynamic prediction of surface sub-sidence under different mining intervals was realized based on the optimized subsection Knothe time function.It is found that with the increase of mining interval,the first working face is increasingly af-fected by the successive working face,and the subsidence basin becomes more asymmetrical.Except for the horizontal displacement,the surface subsidence shows a trend of increasing first and then stabilizing.关键词
多工作面开采/开采时间间隔/地表沉陷/开采沉陷/数值模拟Key words
multi-face mining/mining interval/surface subsidence/mining subsidence/numerical modelling分类
矿山工程引用本文复制引用
王朋飞,祝壮,孙中光,曲越,张衡,李培现..长壁工作面开采时间间隔对倾向主断面地表沉陷的影响研究[J].采矿与安全工程学报,2025,42(2):282-293,12.基金项目
国家自然科学基金项目(52274092) （52274092）
中国科协"青年人才托举工程"项目(YESS20200211) （YESS20200211）
中国科协科技智库青年人才计划项目(20220615ZZ07110134) （20220615ZZ07110134）
