Abstract: Based on the study background of Ⅰ1 mining area of a mine in Xinjiang and FLAC finite difference software,the variation laws of plastic zone range,stress and displacement in the mining roadway with and without support are compared and analyzed;vertical displacement monitoring and horizontal displacement monitoring are carried out for the middle point of roof and right side respectively,the variation of surrounding rock displacement under different anchor bolt layout parameters is compared and analyzed;the stress concentration coefficient and surrounding rock displacement are treated with dimensionless processing and the comprehensive evaluation index is obtained.Based on the numerical simulation results of FLAC and the comprehensive evaluation index analysis,the optimal anchor bolt layout parameters are obtained,which provides a reference basis for tunneling and maintenance of the mining roadway.

Key words: Mining roadway, Layout parameters, Dimensionless processing, Numerical simulation, Comprehensive evaluation index