根据潘谢矿区地质条件及采取一次采全高开采方式，采用物理相似模拟实验方法，对近距离特厚煤层开采时覆岩破坏及位移特征进行了分析，得出了随着覆岩的采动垮落、裂隙高度的增加和范围的增大，形成了阶梯跳跃式趋于稳定，并且确定了近距离特厚煤层一次采全高垮落带及其裂隙带的发育高度．随工作面的推进，层间岩层形成明显的移动变形盆地，同一岩层中下沉移动量最大的点位基本处于下部采空区中心上方．由于采高较大，应力集中沿工作面推进方向不断延伸扩展，应力集中系数较分层开采要小，但前方影响范围要大．%Taking once mining methods and employing physical similarity simulation method according to the Panxie mine geological conditions, this paper further analyzes the characteristics of destruction and displacement of the overlying strata in the close - thick coal seam mining, with the dynamic collapse fall of overlying rock mining and the increase of fracture height and the range, forming the ladder by leaps and bounding to become stable, which determines the close - thick coal seam mining of full - height growth height of caving with fractured zone. With the advance of the face layer between the rock formation of significant movement and deformation of the basin, the amount of movement points are basically at the top of the lower part of the goaf center in the sink in the same rock. Due to the higher cutting height, the stress concentration extended along the working face advancing direction and the stress concentration factor is smaller compared with layered mining, but is larger of area of effect.
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