【摘要】 为明确厚煤层综放开采条件下上覆黄土沟壑地貌开采沉陷特征，以磁窑沟煤矿13101综放工作面为工程背景，运用理论分析和数值模拟试验相结合的方法，研究了其回采引起的黄土沟壑地貌移动变形特征。建立了包含黄土沟壑地貌的三维数值模型，反演了工作面回采过程，从地表下沉量、水平移动量、最大剪切应变、最大剪应变增量等4个角度入手，研究了13101综放工作面回采过程中引起的黄土沟壑地表移动变形规律。研究结果表明：黄土沟壑地貌条件下，由于剪切应变增量的集中，黄土坡易出现整体倾覆，在工作面推进时以及推进后，应当注重对黄土坡变形的监控及保护，防止出现黄土坡整体滑塌。更多还原

【Abstract】 In order to clarify the mining subsidence characteristics of the overlying loess gully landform under the condition of fully mechanized caving of thick coal seams, taking the 13101 fully mechanized working face of Ciyaogou Coal Mine as the engineering background, we studied the movement and deformation of the loess gully landform caused by mining by means of theoretical analysis and numerical simulation. In this study, a three-dimensional numerical model was established and the mining process of the working face was inverted. In terms of surface subsidence, horizontal movement, maximum shear strain, and maximum shear strain increment, the law of surface movement and deformation of loess gully region of 13101 fully mechanized caving face was studied. The results show that, under the condition of the loess gully landform, the loess slope is prone to overall overturning due to the concentration of shear strain increments. Therefore, we should pay attention to the monitoring and protection of the deformation of the loess slope during and after the advancing of the working face to prevent the overall collapse of the loess slope.更多还原