【摘要】 在南京石膏矿中深孔房柱法的崩矿爆破中，对矿柱进行了声波测试；分析了爆破作用对矿柱损伤的特征，研究了中深孔落矿爆破的作用机理，为优化爆破设计提供了依据更多还原

【Abstract】 Ultrasonic test for the pillars has been done in ore production longhole blasting of room-and-pillar mining at Nanjing Gypsum Mine.The authors analysed the characteristics of pillar damage caused by the blasting effect and studied the action mechanism of longhole blasting of mining ore so as to provide basis for optimizing the blasting design.更多还原