| One of the major disasters of coal and gas outburst in coal mine and, therefore, coal and gasoutburst prevention and control is a "prominent" danger mines major security functions.-Protection seam mining is the most effective prevention measures, which are regionalprevention measures. However, the layer of outburst-prevention effect analysis is an importantbasis-protection seam mining design.This papers is for West horse mine1327face lower protective layer mining anti-burstingeffect carried out research of, in more analysis coal and gas highlight of three a main effectfactors, is up covered coal rock of breathable sexual, and gas of assigned save state and seam ofstress of Foundation, on its up covered rock of stress field, and fractured field of distribution andthe seepage field of changes law for has theory and practice research. With the help of Generalprogram UDEC software of discrete element method on overlying strata of the crack and stressfield numerical simulation and analysis of lower protective seam overlying coal when in1327inmining face stress field of rock permeability and sudden effect changes and solutions. UsingComsol physical fields directly coupled analysis software, adjacent to1326face first on asimulation of the gas migration, allowing you to trial for the1327face simulation parameters;1327face based on simulation model and simulation analysis of1327face mining protectivelayer to the layer of gas migration solutions for volume and process effects. |
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