Numerical Simulation Of Fully Mechanized Mechanized Excavation Of The Optimization Techniques

Many researches show that tectonic stress has intimate relationship with occurrence ofcoal and gas burst. It is very important to prevent the coal and gas burst by the procedures ofimproving the stress. The high collection of stress will result gas accumulation even as theburst of gas and coal or gas explosion. The gas damage will be in the maximum sharplyreduced through the reasonable digging method which can redistribute the stress anddischarge the gathering gas step by step. By using the method of numerical simulation through the Finite Element Method it can beknown that this way can be applied to the digging of under-well laneway and in the sametime analyze the stress, displacement and strain and accordingly improve the stressdistribution and reduce the burst of the gas effectively. The No.8 coalmine of PingdingshanCoalmine Industry Corporation is one which has some gas occurrence frequently. It can beshown that their have an intimate relationship between gas and status of stress in it. Thispaper give the result that the reasonable digging method can change the stress convergence ofrocks which make the laneway safer than before and reduce the burst of gas by three steps:prophasing gas measurement, digging step by step through the method of numericalsimulation and practice in the locale, validate it by measuring it in the end. The result validatethe fact. It can be popularized as only changing the sequence and method of digging andimproving the safety status of coalmine and burst of gas without the big investment.