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
