Study on the Floor Mining Effect Characteristics Under Group Thin Seam in Yangcun Coal Mine
Abstract：The safe mining of under -group coal seam in Yangcun coal mine has been seriously threatened by confined water under floor. Therefore, the study of failure depth of mining floor is the key to evaluate the water - resisting ability of floor. Based on the hydro- geological conditions at 4602 working face in Yangcun coal mine, the engineering geological model of under - group coal seam floor was set up. Studying on the deformation and failure laws of coal seam floor mining by FLAC3D ,the maximum failure depth of floor is about 12 m under nomal mining condition. Compared with the working face floor measured results, the two results are in agreement. The re- sults provide reference for rationally mining of under - group coal seam and calculating the indexs of water - resisting ability of floor in Yangcun coal mine
Keywords：mining with water - pressureengineering geological modeldeformation mechanismnumerical simulationin - situ meas- urement
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 45-48 )