Huangyanhui Coal Mine has a large amount of coal in the areas under buildings,railways and water bodies,and the normal production continuity of the mine is tight.The use of conventional caving method to mine coal can easily cause surface subsidence and damage to groundwater and aquifers,resulting in the destruction of surface buildings and the direct discharge and storage of a large amount of gangue.Based on the actual situation of the mine,a continuous mining and filling scheme was proposed,and the layout of the working face support roadway and the coal mining filling process were designed.By establishing a FLAC3D model of the working face and combining it with probability integration method for calculation,it can be concluded that using filling rates of 90%and 95%for filling mining can ensure that the damage level of surface railways and buildings is within the standard requirement of levelⅠdamage.
关键词
"三下"压煤/连采连充/FLAC3D/分析研究
Key words
coal under buildings,railways and water bodies/continuous mining and filling/FLAC3D/analysis and research
维普
万方数据