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中文摘要：
针对在＂三下＂采煤或要求避免地表下沉量较大的工作面开采,通常采取采空区充填的开采方法。从力学梁式理论的角度分析采空区充填后工作面顶板受力特征,引入充填长度及顶板支撑均布载荷两参数,探讨了采空区充填范围以及填充材料在不同的压实程度过程中对工作面顶板挠曲下沉的影响,给出顶板挠曲计算式。并从数值分析的角度给出工作面顶板在采空区不同充填状态下的位移特征,说明采空区填充对工作面顶板挠度的影响。
英文摘要：
Stowing mining method is usually used for avoiding large surface subsidence when mining under buildings,railway and water body.Roof stress characteristic after stowing was analyzed based on beam mechanical model.Two parameters,stowing length and uniform load of roof,were introduced to discuss gob stowing range and influence of stowing material on roof deflection under different compaction degrees,roof deflection calculation formula was presented.With numerical method,roof displacement under different stowing states was simulated to show the influence of gob stowing on roof deflection.
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