矸石充填采空区覆岩导水裂隙带数值模拟研究

Numerical Simulation Study on Water Diversion Fracture Zone of Overlying Rock in Goaf Area Filled with Gangue

以新安煤矿15130工作面煤层开采为研究对象,借助FLAC^(3D)数值模拟分析软件,模拟分析矸石充填采空区煤层开采过程覆岩导水裂隙带发育规律,研究不同采高、不同充实率下矸石充填采空区导水裂隙带发育高度,得出减小采高及增加充实率能限制覆岩破断、降低导水裂隙发育高度。

Taking the coal seam mining of the 15130 working face in Xin’an Coal Mine as the research object,with the help of FLAC^(3D)numerical simulation analysis software,the development law of water-conducting fracture zone of overlying rock in coal seam mining process of gangue filling goaf area is simulated and analyzed,the development height of water-conducting fracture zone of gangue filling goaf area under different mining height and filling ratio is studied.It is concluded that reducing mining height and increasing filling rate can limit the fracture of overlying rock and reduce the development height of water-conducting fracture.