摘要
基于上湾煤矿1-2煤层顶底板条件,研究了采放比对顶煤冒放性的影响,同时应用FLCA3D软件对开采煤体的顶煤活动规律进行了数值模拟。研究得出:适合的采放比例为割煤高度6.0m,放煤厚度2.9m;随着工作面的推进,顶煤受到矿压影响发生破坏的范围可达2m以上,2~3m厚的顶煤可以充分垮落;煤壁稳定性较好,超前破坏范围保持相对稳定。
Based on roof and floor conditions of 1-2coal seam inshangwancoalmine,studiedthe caving ratioimpact-totop-coal cavability,used FLCA3 Dsoftware to simulateroof coal movement law at the same time.The result showedthat:with the advancing of working face, the damage range of top coal affectedby mine pressure is more than 2m,2~3m thick top coal collapsesfully.And coal wall is stability,advanced damage range remaines relatively stable.
出处
《神华科技》
2016年第1期21-24,共4页
Shenhua Science and Technology
关键词
大采高综放
采放比
数值模拟
Higher Mining Height
Cavingratio
Numerical Simulation