The Disciplines Of Coal And Gas Outburst And The Technology Of Comprehensive Management In The Conditions Of Extremely Complex Geological

The geological conditions of the mine of Tanjiachong,Liwangmiao and Longjiashan is socomplex, and accidents of coal and gas outburst and the phenomenons of gas dynamic happenoccasionally. The article statistics and analysis the coal and gas outburst accident which occurredover the years and studies the main factors of coal and gas outburst in the conditions of extremelycomplex geological structure. Elastic potential energy of coal, gas internal energy, coal fracturework and coal selling work are analysised to get the energy condition of coal and gas outburst.Based on Darcy law, gas seepage law, gas pressure gradient and surrounding rock stress,calculation model is built between gas pressure gradient and ground stress. The article simulatesthe disciplines of ground stress distribution and the destroy of tectonic-coal layer in the conditionsof complex geological,and studies the distribution of coal seam gas. The article summarizes thecommonly using redictive indicators in coal and gas outburst and proposes the dynamicadaptability predictive indicators of coal and gas outburst under the conditions of the extremelycomplex geological structure in Hongwei Mine. The article statistics and analysis the preventionmeasures adopted in mines, and studies actual effect of the on-site implementation, and proposestechnical proposal of comprehensive management of coal and gas outburst which are suitable forHongwei Mining under the conditions of extremely complex geological structure.