摘要
针对综放面开采过程中的上覆岩层破坏导致的采空区漏风情况,采用FLAC3D数值模拟软件,通过模拟综放面开采后采空区上覆岩层的应力场及变形场的破坏情况,根据应变、应力、塑性区云图,分析了上覆岩层的应力、应变、塑性区域破坏规律,结合数值模拟结果与经验公式计算,确定了竖三带和横三区的范围,为漏风及遗煤自燃治理提供了理论依据。
In the process of working face mining,upper rock stratum damage cause air leak in goaf,used numerical simulation software FLAC3 D,simulated the destruction of the stress field and deformation field upper rock stratum in goaf after deformation-failure mining,according to the strain,stress and plastic zone nephogram,analysised the strain,stress and plastic zone law of upper rock stratum,combined with the results of numerical simulation and experience formula,got the range of vertical three zones and cross three zones,provides a theoretical basis for air leakage management.
出处
《煤炭技术》
CAS
北大核心
2015年第5期32-34,共3页
Coal Technology
关键词
采空区
数值模拟
应力变化
区带划分
goaf
numerical simulation
variation of stresses
zone divide
