中国矿山工程

The study of the influence of dynamic disturbance of mining blasting on the stability of roadway is an important aspect of mine safety production. In order to study the dynamic response rules of the reserved roadway in the backfill under different disturbances, a three-dimensional numerical model for the dynamic stability analysis of roadway was established by 3DEC software and numerical simulation analysis was carried out, and the deformation characteristics and stress field distribution characteristics around roadway under dynamic blasting load were analyzed. The results show that blasting changes the range of compressive stress and tensile stress around the roadway to some extent. Using the reserved roadway mining mode of steel mesh + steel wire rope can greatly weaken the dynamic disturbance of blasting outside the roadway and improve the stability of the roadway.