Study on Coal Wall Displacement of Fully Mechanized Coal Face with Large Mining Height and Its Control Technology
ZHANG Bei
Abstract：In order to effectively control coal wall stability of fully mechanized coal face with large mining height, a calculation model for coal wall displacement of fully mechanized coal face with large mining height was built by taking 504 working face of a mine as the study background and using the ideal elastic and plastic strain softening model, and the coal wall displacement solution at every point on the coal wall was obtained. A numerical calculation model for the working face with large mining height was also built, simulation analyses was made on the changing laws of the displacement on the coal wall surface and the plastic zone in working face with different mining height, and it concluded that the coal wall fall mainly happened in its middle and upper parts. Based on the coal wall fall mechanism of the working face with large mining height, corresponding measures were proposed from the aspects of improving mechanical devices, optimizing mining technology and so on.
Keywords：large mining heightfully mechanized coal facecoal wall cavingelastic-plastic strain softening
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 45-48 )