Surface Movement Specific Property of Thick Seam Mining under Think Alluvium

To the observation data of thick seam slicing mining under thick alluvium of mines three surface movement stations in Shandong,we analyzed the changing laws of rock movement parameters with all slicing faces in same thick seam panel,and the quantilative relationship formula between rock movement parameters and working depth.The surface damage form and its causes are discussed.The surface movement laws obtained by those surface movement observing sations give an important guidance for mining design of thick seam under thick alluvium under "buildings、water bodies and railways.”