煤矿安全2012，Vol.43Issue(5)：163-165,169,4.
保护层开采过程中上覆煤岩体的变形卸压效果数值模拟
Numerical Simulation of the Overlying Coal-rock＇s Deformation Relief Effect During the Protective Layer Mining Process
摘要
Abstract
The artical uses FEM software ANSYS to simulate the mining process of under-protecting coal stratum.Through the changing situation of strain and stress fields of protected seam when advancing different distances,the relief range of protective layer is determined.The simulation result shows that the swelling deformation rate of the protective layer is 0.35% to 1.18%,which basic agrees with the measured swelling deformation rate of 0.56%.The stable and effective relief zone is located between 50 m ahead of open-off cut and 60 m behind the working face,which is identical with the actual measurement data.关键词
ANSYS/下保护层/数值模拟/应变与应力场/卸压范围Key words
ANSYS/under-protecting coal stratum/numerical analysis/strain and stress fields/relief range分类
矿业与冶金引用本文复制引用
谢景娜,罗新荣,周昀涵,吴丽丽,张军亮..保护层开采过程中上覆煤岩体的变形卸压效果数值模拟[J].煤矿安全,2012,43(5):163-165,169,4.基金项目
国家自然科学基金重点资助项目 （）
国家重点基础研究发展计划（973计划）资助项目 （）
国家科技支撑计划资助项目 （）
“十一五”国家科技支撑计划资助项目 （）
