Safety Mining Technology Research Of The Ultra-close Distance And Outburst Coal Seams Based On Multi-disaster Coupling

Coal as a kind of non-renewable fossil energy, with demand for the human development is becoming in bigger and bigger, the total reserves of coal resources are dwindling. For rational utilization of coal resources saving, promote the sustainable development of human beings, The future will be mining coal seam in complex condition.coal mining from shallow to deep, also increase in the number of disaster factors restricting coal mining, multiple disasters in the form of coupling between the affecting the safe and efficient mining of coal.Based on the theoretical analysis and engineering practice, the method of combining in the engineering background of xiaotun coal mining 1610 face, affecting more mining disasters coupling analysis theory, mainly including gas- water disasters, roof- gas- water disasters, gas-combustion, roof- water disasters, etc. More disasters coupling restricts the safe and efficient mining of coal, but the technique used to solve all the disaster has been mature, in order to ensure the safety mining coal seams of press close to, for the gas, roof, water disasters, and coal spontaneous combustion mechanism and cause of disaster control technology is studied.For the gas control and analysis of types and characteristics of gas disasters, gas disaster mechanism and mode, gas storage and transport characteristics, site of radius were measured drainage in coal seam gas content, pressure, gas, and to improve the gas drainage borehole sealing technology proposed optimization, during mining gas outburst prevention and overload.The roof management, the movement and deformation law of the surrounding rock, the movement law of the overlying strata, the mechanism and mode of the roof causing mechanism are analyzed.. The forming mode and characteristics of the roof of the regeneration are mainly analyzed, and the control measures are put forward for the support and the roof of the roadwayOn the prevention and control of water disasters, analysis of the coal mining water disaster type and characteristics, water damage caused by disaster mechanism and mode, the hydro geological exploration, flood risk grades and eliminate flooding three-dimensional integrated control technology.For spontaneous combustion of coal seam, it analyzes the close to the outburst coal seam mining coal seam spontaneous combustion process, influencing factors, spontaneous combustion characteristics and rules, spontaneous combustion disaster mechanism and model, and puts forward technical measures for preventing coal spontaneous combustion.