Numeric Investigation on the Stability of a Preformed Roadway under Backfill Body Subjected to Blasting Load

Tungsten, essential in the industrial, military, and civilian domains deemed a strategic resource by various nations, necessitates careful consideration room pillar mines due to potential instability safety hazards posed untouched mine pillars, making tungsten recovery crucial for worker economic gain. This research aims provide guidance recovering from pillars mining operations safer workers Xianglushan mine. Numerical simulations are conducted study mechanical response of preformed roadway backfill body subjected static dynamic loads with explosive distances positions. Blasting vibration velocity blasting-induced damage extracted evaluate body. The numerical results indicate that steel frame remain stable under influence both gravity impact blasting, using charge 3.00 kg per blasthole. By analyzing these indicators, identified, practices.