以鲍店煤矿83上01工作面3煤层分层开采为研究背景,采用经验公式和数值模拟的方法,对厚松散层薄基岩重复采动下的覆岩破坏高度进行了研究。根据开采技术条件和岩石力学参数,应用FLAC3D数值模拟软件,建立了数值计算模型,对上覆岩层随工作面开采引起的塑性区及应力分布特征进行了分析,确定了3上和3下煤层的“两带”高度,并与经验公式进行了对比验证。 Based on the stratified mining of No.3 coal seam in 83 Shangliao working face of Baodian Coal Mine, the height of overlying strata under repeated mining of thick loose loose bedrock was studied by empirical formula and numerical simulation. According to mining technical conditions and rock mechanics parameters, numerical simulation software FLAC3D was used to establish the numerical calculation model. The plastic zone and stress distribution characteristics of overlying strata caused by working face mining were analyzed. “Two belts ” height, and compared with the empirical formula to verify.