中文摘要：

根据俯伪斜开采采场布置呈平行四边形特点,基于弹性薄板小挠度理论,建立了俯伪斜开采基本顶力学模型;采用康托洛维奇法推导得到工作面初采和正常推进2个阶段基本顶弯曲变形近似表达式,揭示了俯伪斜采场基本顶2个阶段变形破断形状效应的力学机理。结合逢春煤矿S2611俯伪斜工作面的实际工程参数,计算得出工作面初次来压步距和周期来压步距分别为12 m和8 m,基本顶破断前最大挠度均为0.08 m,处于工作面中上部位置。对急倾斜薄煤层俯伪斜工作面来压强度低,采空区上、中、下部矸石充填率差异不大及分段来压等特殊矿压现象进行了讨论。

英文摘要：

According to the arrangement feature of parallelogram in the pitching diagonal mining panel,the mechanical model of the main roof in this panel was built based on the small deflection theory of the thin flexible plate;the approximate formulas of bending deformation of main roof during the initial stage and the normal stage of mining in pitching diagonal mining panel were derived based with Kantorovich method;the mechanical mechanism of the shape effect of the deformation and fracture in the main roof were revealed.Combining the actual engineering parameters in the pitching diagonal working face of S2611 in Fengchun Coal Mine,the distance of initial weighting and periodic weighting of the main roof were calculated to be 12 m and 8 m respectively,and the maximum deflection of main roof at the upper-middle working face was worked out to be about 0.08 m.Last,such special phenomena of strata behavior as low weighting intensity,similar rate of gangue filling along the entire gob and subsection weighting are discussed.