哈尔滨商业大学学报（自然科学版）2025，Vol.41Issue(5)：580-586,7.
Ⅱ5112N工作面两带高度及顶底板破坏规律研究
Research on height of two zones and failure law of roof and floor slate layers in Ⅱ5112N working face of Renlou Coal Mine
摘要
Abstract
In order to study the damage law of the top and bottom rock layer during the mining process of the working face,the working face of Renlou Coal Mine Ⅱ5112N was taken as the research background.Theoretical calculations and numerical simulation of FLAC3D were used to study the change law of vertical stress,vertical displacement,plastic zone,and damage characteristics of the top and bottom rock layer at the height of the two zones of the working face and at different advancing distances.The results showed that the simulated heights of the two zones and the height calculated by the standardized formula were basically matched;in the process of coal excavation,small tensile stresses were produced in the top and bottom plates,and a stress concentration phenomenon was found in front of the cutting eye and the working face;the vertical displacement of the bottom plate protrusion was small,and the amount of top plate subsidence was increased;when the working face was pushed forward,the top and bottom plates would be damaged,and when pushed to a certain distance,the damage height of the top plate and the damage depth of the bottom plate were reached the peak,and then tended to a stable value,and the damage range of the plastic zone would also be in a relatively stable state.关键词
工作面采动/理论计算/FLAC3D/数值模拟/"两带"高度/顶底板破坏特征Key words
working face mining/theoretical calculations/FLAC3D/numerical simulation/height of"two zones"/top and bottom plate failure features分类
矿业与冶金引用本文复制引用
何学焰,刘洋,董兵,田佳..Ⅱ5112N工作面两带高度及顶底板破坏规律研究[J].哈尔滨商业大学学报（自然科学版）,2025,41(5):580-586,7.基金项目
国家自然科学基金——动力扰动下峰后破裂岩石力学特性及破坏机理研究(51604006) （51604006）
安徽省自然科学基金——动力扰动下深部巷道围岩塑性区扩展演化规律及灾变机理研究(2108085ME192) （2108085ME192）
