关键词: 兖州矿区, 厚冲积层, 非充分开采, 沉陷规律, 物理探测

Abstract: The degree of mining subsidence under thick alluvium layer plays an important role in mining under building，railway and water bodies in Yanzhou mining area，so it's necessary to discuss the discrimination method of full subsidence degree. The surface subsidence characteristics of fully mechanized sublevel caving mining under thick alluvium in Yanzhou mining area are analyzed abased on measured data，and the discrimination method for full subsidence degree with the thickness of bedrock is put forward. The two geophysical methods of electrical prospecting and seismic exploration are applied to survey and verify the range and spatial distribution of the broken overlying strata. The conclusions have an important guiding significance for “three under” mining in this mining area.

Key words: Yanzhou mining area, Thick alluvium layer, Subcritical extraction, Subsidence law, Physical detection