Research On Design Of Crossheading Air Stopping In Coal Pillar For Fully Mechanized Caving Face In Suancigou Mine

As a ventilation in coal mine the crossheading air stopping is important. Suancigou mining area’s coal seam Oxygen guttering properties is strong and contain pyrite nodules or film, the coal seams prone to spontaneous combustion, coal dust explosion hazard. Caving Technology stoping acid thorn coal mine on the coal seam,6上107Face Coal Pillars Lane confined by the face with the impact of micro-fissures, these fissures communicating the mining face and adjacent goaf (6on105goaf),6on average107working surface from the surface230m, surface produces a large number of fissures, the presence of cracks sealed the Lane makes the the mine under negative pressure ventilation, the formation of a surface Merry goaf air leakage channels mine goaf fire and security. In order to ensure that the conduct of the coal mine production safety work, need the structure of a closed couplet Lane set to conduct systematic research to associated Alley confined achieve safe and reliable to meet the requirements of coal mine production safety.Combined with acid barbed coal mine has coal and rock physical and mechanical parameters on the basis of the analysis of the acid thorn coal mine geological conditions, and the application of theoretical analysis and numerical simulation of combined research sealed to maintain the stability of coal pillar width identified more reasonable section coal pillar leaving25m; empirical formulas and numerical simulation to determine the associated Alley confined to build a location away from the6on the105goaf edge at20m.On the basis of previous analysis, put forward a crossheading air stopping design, analysis and performance analysis confined designed airtight meet Mine Safety economic requirements, and other similar conditions mine Lane airtight construction with certain references.