NUMERICAL SIMULATION OF PLASTIC AREA DISTRIBUTION IN THE COAL BED OF EXTRACTION LANEWAY

Utilizing large-scale finite element software which is called ADINA to simulate the destroying of the 2201 re-wind tunnel in Handan hengjian colliery due to it express the destroy of model tunnel.It can obtain the wanted sanction of laneway flank while the laneway reaching the steady state.And then utilizing theoretical analysis formulary to comulate the wanted analytic solution while the laneway stabilizes.Comparing the two results,the errors between numerical simulation sanction and theoretical analysis sanction,numerical simulation displacement and field measurement displacement are less than 10%,providing a new method for laneway design and reinforcement.