关键词: 浅埋深, 薄基岩, 综放开采, 覆岩运移, 埋深效应

Abstract: Through analog simulation tests, the article studies the effect of burial depth over overburden movement at the fully mechanized top coal caving face of shallow overburden and thin bedrock. According to the study, the overburden over the fully mechanized top coal caving face of shallow overburden and under thin bedrock will form into a stable structure of “Cantilever beam + articulated rock beams + arch”. When the “articulated rock beams” lose their stabilities periodically, the loose bed and earth surface will collapse after the working face as if being cut down in one whole block. Terraced sinking on the surface will penetrate through from the surface to the working face. That results in the destruction of aquifer in the overburden and surface water system, being disastrous to the ecological environment. With the increase of burial depth, the maximum sinking depth of the surface will be bigger, and the distance between the deepest sinking point and the working face will also increase.