基于模拟实验的采动覆岩破碎区不同层位下沉量和碎胀系数研究  

Subsidence and expansion coefficient of different layers in mining overburden broken area based on simulation experiment

作　　者：雷腾飞 李博涛 LEI Tengfei;LI Botao(Shaanxi Huangling No.2 Coal Mine Co.,Ltd.,Yan’an 727307,China)

机构地区：[1]陕西黄陵二号煤矿有限公司,陕西延安727307

出　　处：《陕西煤炭》2024年第11期44-48,59,共6页Shaanxi Coal

摘　　要：为研究采动覆岩破碎区矸石浆体介入规律,基于相似模拟实验和UDEC数值模拟,确定了工作面模型不同层位的下沉量和碎胀系数,得到了最佳充填区。研究结果表明,在竖直方向上,自下而上顶板岩层的位移不断减小,顶板岩层下沉量在倾向大致呈对称分布;采空区垮落带的碎胀系数中部小两端大;最佳充填区为采空区垮落带。研究结论为浆体充填技术提供了一定的理论基础,可有效处理矸石。In order to study the intervention law of gangue slurry in the broken area of mining overburden rock,based on similar simulation experiments and UDEC numerical simulation,the subsidence and swelling coefficients of different layers of the working face model were determined,and the best filling area was obtained.The research results show that the displacement of the roof rock layer is decreasing from bottom to top in the vertical direction,and the amount of subsidence of the roof rock layer is roughly symmetrically distributed in the tendency.The swelling coefficient of the collapse zone in the goaf is small in the middle and large at both ends.The best filling area is the collapse zone of the goaf.The conclusion of the study provides a certain theoretical basis for the slurry filling technology to effectively deal with gangue.

关 键 词：采动覆岩 煤矸石 相似模拟 数值模拟 下沉量 碎胀系数 

分 类 号：TD823.7[矿业工程—煤矿开采]