Optimization analysis of coal mine roadway section based on the ANSYS simulation

In order to investigate the reasonable controlling methods of floor heave in deep roadway,based on the actual engineering situation of Donghai coal mine in Long Coal Industry Group,Jixi Branch,this paper gets the field sampling from 32# coal seam' s roof and floor in the second level No.5 Mining Area with downward mining,then it tests the mechanical parameters in the laboratory,and it uses the software ANSYS for numerical simulation by comparing the stress distribution of deep curved bottom feet and straight wall arch roadway in Donghai coal mine.The results show that the curved bottom feet design can improve the surrounding rock' s stress distribution and decrease the surrounding rock' s damage range and the two sides and floor' s deformation.The engineering practice show that the floor heave problem of Donghai coal mine has been effectively controlled,it achieves good results,guarantees the roadways' stability,and provides a new way to dealing with similar problems of floor heave in deep roadway.