Smooth blasting method for roadway under iron mine

The invention discloses a smooth blasting method for an underground roadway of an iron mine, which comprises the following steps of: lofting and distributing holes: lofting and excavating a contour line by survey personnel, and marking blast hole positions on a tunnel face by using red paint; the vertical distance between two vertical peripheral eyelets at the bottom is 30 cm, and 51 holes are formed in total; the bottom plate eyelets are 15 in total, the distance between the eyelets is 118 cm, and the depth of the eyelets is 3.7 m; the number of the auxiliary eye holes is 21, the circumferential distance is 120 cm, and the hole depth is 3.7 m; the total number of the arch crown auxiliary eyelets is nine, the annular distance is 1.4 m, and the hole depth is 3.7 m; the total number of inner ring auxiliary eyelets is four, the left-right distance is 1.2 m, the hole depth is 3.7 m, and the inner ring auxiliary eyelets are pressed down by 30 cm; other auxiliary holes are distributed along the first frame and the