Rules of mining height＇s influence on methane gushing and its application
Abstract：In order to resolve the problems of ventilation and methane,put forward increasing mining height based on comparison of ventilation cross-sections of powered supports with different mining heights.Numerical simulation was applied to research influence of mining height on methane gushing.Results show that larger mining height will increase ventilation cross-section and reduce methane concentration.Aiming at the actual condition of one mine,it obtained rational mining height for the mine with meeting the precondition of coal-wall stability.The application shows that increasing mining height is favorable for safety and high-efficiency of full-mechanized caving mining face.
Keywords：longwall top coal cavingmining heightmethane gushingstability of coal wall
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)