Research On23130Working Face’s Impact Law And Avoiding Impact Of Yuejin Coal Mine

The impact of the mine pressure as a major risk of mine safety, seriously restricting thesafety and high coal mine. At the same time, it as one of the difficult problems in rockmechanics field, from documented in1738British history Southern Dynasties tafo coal mineoccurred rock pressure began, has been plagued by many scholars at home and abroad. Floortype rock pressure is formed under the specific geological conditions to the bottom for abreakthrough of rock pressure, at present, this research is relatively weak, so no matter fromthe economic benefit and the social benefit of floor rock pressure impact law and anti shockmeasures are extremely meaningful.In order to explore the23130of Yuejin Coal mine working face bottom pressure platerockburst occurrence regularity and the excavation of tunnel after the anti scour supportingmeasures to support, the according to the mine as the research subject, on the basis of previousresearch results first by impact trend of rock and coal experiment of Yuejin Coal Mine Coalrock of rockburst tendency decision, then according to the comprehensive histogram calculated23130of working face roof slate layer characteristic parameter, taking it as one of Yuejin CoalMine impact rules on the basis of the judgement. Secondly, according to rock mechanics,elastic mechanics theory to build a base plate stress calculation model are calculated after theexcavation of tunnel surrounding rock stress transfer process, damage limit conditions occurredon the base plate, and the introduction of floor burst dangerous coefficient of pressure, have animpact on the mine rock pressure of the main factors, and combined with the actual conditionsof the mine to analyze the. Finally, the use of comprehensive index method and the method ofanalogy areas classified as hazardous on23130working face and puts forward the anchor netand "O" type shed combined support, by FLAC3D software modeling and to supportconditions, after the excavation of tunnel floor stress distribution, point level monitoring ofvertical displacement and plastic zone distribution were compared, and provide basis foroptimization scheme selection, also for23130working face through the period, the security construction need to avoid high stress area is put forward and two through programs, andnumerical simulation that optimization scheme, and shows the linking method for rockpressure dangerous laneway has certain reference function.In on the basis of the above research work mainly obtains the following conclusion:Yuejin Coal Mine Rock Pressure by mining depth, the roof rock properties, coal physical andmechanical nature, the variation in thickness of coal seam, geological structure effects. Rockpressure type belongs to deep mining, hard and thick gravel stratum of floor burst; calculatedaccording to the derivation of the mechanical model of roadway along the layout of the roof,coal seam floor level stress increases, the vertical stress decreased the mechanical reasons offloor burst; through theoretical analysis and field test of practice, anchor net and "O" type shedcombined support with anti impact and restrain the impulse, reduce the impact of disasters, for23130of Yuejin Coal mine working face, play a role in preventing rockburst in coal mine, toachieve the desired effect.