Abstract: In order to further improve the efficiency of excavation-anchoring integrated machine for large section rectangular roadway, the 2102 auxiliary transportation crossheading of the first mining face coal mine in Yuheng mining area is taken as the engineering background. The influence of bolt spacing and anchor cable layout on the stability of roadway surrounding rock is analyzed by field investigation and nu⁃ merical simulation. Combined with the support characteristics of the integrated machine, the support optimi⁃ zation scheme of rapid excavation of large section coal roadway is proposed on the basis of the original sup⁃ port scheme. The test shows that after the support optimization scheme is adopted, the surrounding rock of the roadway is safe and stable, and the efficiency of excavation and support is increased by 20%.

Key words: large section coal roadway, rapid excavation, support optimization, excavation efficiency