针对第四系资源开采遇到的“天窗”地质构造问题,以存在天窗地质构造的煤矿为背景,建立充填开采含“天窗”水平薄基岩的力学模型—Winkler弹性地基上开孔固支板模型,求解矸石充填条件下含天窗水平薄基岩挠度表达式.在此基础上对薄基岩厚度、天窗尺寸、矸石充填体强度对薄基岩天窗附近应力分布影响进行分析探讨.研究结果表明:薄基岩下表面天窗边界处径向和环向应力都为拉应力;薄基岩厚度、天窗尺寸对天窗边界环向应力影响较大,而对径向应力影响较小,环向应力随薄基岩厚度的增大迅速递增,随天窗尺寸增大逐渐增大;增大矸石充填体强度能显著减小天窗附近应力,矸石充填体强度增大,环向应力大幅度降低,薄基岩天窗附近应力环境显著改善,防止天窗边界处出现破坏裂纹,导致薄基岩局部失稳. In view of the “skylight” geological problems encountered in Quaternary resource exploration, a mechanics model of filling and mining horizontal thin bedrock with “skylight” is established on the basis of Winkler elastic foundation with the geological structure of skylight Hole solid support plate model to solve the expression of horizontal thin bedrock deflection with sunroof under waste rock filling conditions.Based on the analysis of the influence of the thickness of thin bedrock, the size of skylight and the strength of filling body on the stress distribution around the skid roof The results show that the radial and hoop stress of the skylight at the lower surface of the thin bedrock are all tensile stress; the thickness of the thin bedrock and the size of the skylight greatly affect the circumferential stress on the skylight boundary, but have little effect on the radial stress; The stress increases rapidly with the increase of the thickness of thin bedrock and increases with the increase of the size of the skylight. Increasing the strength of the refuse body can significantly reduce the stress in the vicinity of the skylight, increase the strength of the refuse body and greatly reduce the circumferential stress, The stress environment around the thin roof rockwool significantly improved to prevent the destruction of cracks in the skylight boundary, leading to local instability of the thin bedrock.