摘要
以西部某矿1203面覆岩为研究对象,进行相应的覆岩结构稳定性力学分析,得出了关键层结构稳定条件,并采用离散元数值模拟软件UDEC2D4.0对覆岩变形破坏进行动态数值模拟计算。揭示了浅埋煤层关键层结构变形破坏规律,给出了避免地表非连续破坏的允许采高为2 m。
Based on a study on the #1203 coal face overlying strata in a coal mine in the west of this country,a corresponding analysis of overburden structure stability is carried out,which produces the conditions for structural stability for key strata and simulates overburden deformation and failure dynamically using discrete element numerical simulation software UDEC2D4.0.The result reveals deformation and failure law of key strata structure in shallow coal seams and determines the appropriate mining height of 2 m to avoid non-continuous failures of surface ground.
出处
《中国煤炭》
北大核心
2010年第10期48-50,共3页
China Coal
关键词
煤炭开采
浅埋煤层
覆岩移动
地表变形
数值模拟
coal mining
shallow coal seam
overlying strata movement
surface deformation
numerical simulation
