中文摘要：

为了进一步完善典型浅埋煤层长壁开采覆岩运动与控制理论,以神东矿区22616工作面为工程背景,采用试验模拟、理论分析与现场应用相结合的方法,研究典型浅埋煤层长壁开采老顶破断特征及地表砂土层载荷传递效应,提出采场支架合理工作阻力计算方法,并成功应用于工程实践。研究结果表明：浅埋采场老顶滑落失稳瞬间,动载显现剧烈,覆岩台阶下沉明显,砂土柱间的摩擦作用导致地表砂土层载荷存在一定的传递效应,并非以其全部自重作用于基岩老顶。基于这一特性,引入岩柱法修正老顶结构经典力学模型参数,改进浅埋采场来压顶板支护力数学模型。理论计算采场初次来压控顶支架最大工作阻力为10 506.8 kN/架,周期来压控顶支架最大工作阻力为7 475.26 kN/架,均与现场观测数据较为吻合,采场ZY11000/24/50型液压支架刚好满足控顶要求,保障了工作面安全、高效开采,为典型浅埋煤层长壁开采工作面支架工作阻力确定及选型提供了重要参考。

英文摘要：

This study is to improve the theory of overlying strata response and control during typical shallow coal seam longwall mining.A total of 22616 working face of Shendong coalfield was taken as an example.Similarity simulation experiment,theoretical analysis and field application were used to investigate the fracture characteristics of the overlying main roof and the load transfer effect of sandy soil stratum during the typical shallow buried coal seam longwall mining.A new method was proposed for calculating the supporting force in the period of roof weighing of the shallow stope,and it was further applied to determine the working resistance of support on site.Research results show that at the moment of the instability of the breaking main roof sliding,the dynamic loading occurr violently and the bench of overlying strata subsides obviously.The friction between sandy soil column leads to a certain transfer effect on the surface sand load but not its total self-weight acting on the bedrock.Hence,the load transfer effect of sandy soil stratum and the conditions of bedrock weight were taken into full account in this study.The rock column method was introduced to correct the classical mechanics model parameters of the main roof structure.Moreover,mathematical models of roof supporting force were improved during weighting in the shallow stope.Results show that the maximum working resistance of support is 10 506.8 kN per support during the first weighting of stope roof and the value is 7 475.26 kN per support during periodic weighting.It is proven that calculated results agree well with the field observation data.ZY11000/24/50 type hydraulic support is adopted to control the roof of stope,which perfectly meets the requirements of support force.Thus,both the safety and high-efficiency of mining in working face are well achieved.Therefore,this study provides important references for the determination and selection of the working resistance in the typical shallow coal seam of the longwall working face.