含水层下矸石充实率控制导水裂隙带高度发育研究

Research on Controlling the Height Development of Water Fractured Zone by Filling Rate of Gangue in the Aquifer

根据含水层下矸石充填采煤覆岩移动变形特征,对等价采高的计算公式进行了细化和修正,并利用此修正的公式对不同充实率的情况下进行预计导水裂隙带高度,实践开采得出结论:含水层下矸石充填对覆岩移动变形产生有效控制,导水裂隙带预计高度和实测结果二者大体一致。

By analyzed the gangue filling mining overburden rock movement and deformation characteristics, the affect of gangue filling percentage under aquifer on development height of water flowing fractured zone was studied. And the calculation formula of equivalent mining height is refined and modified. In the case of different filling rate, the height of the guide is predicted by the modified formula. Mining practice shows that, containing water filled with gangue has effective control on overlying strata movement and deformation, water flowing fractured zone is expected to roughly the same height and measured results.