摘要
由于某煤矿3号煤层301采区煤层松软易碎,很不稳定,给采煤方法的选择和回采巷道的布置带来了很大的困难,经过大量的调查研究,决定采用网格化锚固无人工作面采煤方法进行开采,该采煤方法可以有效的控制顶板的离层和垮落,因此,本文应用FLAC3D对不同的锚固网格尺寸进行了数值模拟研究,得出"网格状"锚固的合理开采尺寸,对较软煤层的开采具有一定的指导意义。
No.301 mining area of No.3 coal seam in a mine is soft, fragile, and instable, which makes it difficult for the mining method selection and roadway layout. Through extensive research, unmanned working face mining with grid anchorage was adopted, which could effectively control the separation and collapse of the roof. Therefore, FLAC3 Dwas used to simulate the grid size to achieve the rational mining size, which could be useful for the mining on soft seams.
出处
《山西煤炭》
2015年第6期51-54,共4页
Shanxi Coal
关键词
网格化锚固
顶板破坏
数值模拟
grid anchorage
roof failure
numerical simulation
