摘要
针对某煤矿大倾角特厚煤层大采高综放工作面为对象,对特厚煤层综采放顶煤开采条件下,通过数值计算方法,分析了不同割煤高度对工作面煤壁、顶煤的屈服破坏、位移特征、煤壁前方煤体垂直应力分布情况。综合对比了不同采高下的影响效果及顶煤位移情况,从而合理确定采高,达到矿井安全、高产、高效的目的。
Taking the large-mining-height fully-mechanized working face with steep extra-thick seam as the object,the study analyzes the yield/failure of coal walls and top coal,displacement characteristics,vertical stress distribution with different cutting heights by numerical computation.The comprehensive analysis of the effects and the top coal displacements in the different mining heights determines the reasonable mining height to achieve the safe,productive,and efficient production.
出处
《山西煤炭》
2012年第7期41-42,45,共3页
Shanxi Coal
关键词
特厚煤层
合理采高
数值计算
extra-thick coal seam
reasonable mining height
numerical computation
