Cantilever structure moving type of key strata and its influence on ground pressure in large mining height workface
Abstract：With the theoretical analysis and the simulation experiment applied,three moving types of key strata cantilever structures were put forward as follows：’cantilever’ directly baggy fall type,’cantilever’ bi-directional rotation baggy fall type,and ’cantilever-voussoir beam’ alternating movement type.Combined with the comparative analysis about the influence on the ground pressure of the key strata ’cantilever’ and ’voussoir beam’ structure,the different influence law of the three moving types of the key strata cantilever structure on the stope mine pressure was revealed,which was also verified by the measured data of the fully-mechanized face in Bulianta Coal Mine with 7.0 meters height supports.
Keywords：large mining heightkey stratacantilevermoving typeground pressurevoussoir beam
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)