Roadway equipment and specific bolt support flow in a mine were introduced. Finite element method was used to analyze roof stress under condition of roadway excavation with or without bolt support, and the influence of bolt diameter and spacing on roof stress was analyzed. The results showed that roof stress with bolt support was smaller than that of the no-bolt roadway, which could be reduced by 15 %. The roof stress decreased with increasement of bolt diameter, and increased with increasement of bolt spacing. At the same time, the bolt support parameters were optimized under premise of comprehensive strength and cost. The results provided reference for selection of actual bolt parameter.
