According to the result of Lab test and in site observation,this paper put forward that the arch structure similar to parabola exists in overlying bed of longwall face.

• 根据实验和现场观测结果,提出了壁式采场上覆岩层中存在抛物线形拱结构,建立了该结构的力学模型,并进行了内力分析,同时提出了工作面支架受载的计算方