分集药包在硐室爆破中的应用APPLICATION OF SUB-CONCENTRATED CHARGES IN CHAMBER BLASTING
田国强
TIAN Guo qiang (The 11th Engineering Bureau,China Railway Construction Corp , Xiangfan City,Hubei 441000,China)
摘要(Abstract):
分集药包可用于减小爆破震动 ,增强堵塞效果 ,减小压碎圈半径 ,改善破碎效果 ,以及处理一些特殊的地形与地质构造。但是 ,应注意合理选择微差时间间隔、爆破作用指数和药包间距 ,并且应加强堵塞。
The sub concentrated charges can be used for damping of blasting vibration,enforcement of stemming effect,reduction of crush zone radius,improvement of fragmantation,and treatment of some particular topography and geological structures However,an attention should be paid to reasonable selection of delay intervals,blasting function indexes and charge spacing,and the stemming should be stressed
关键词(KeyWords):
硐室爆破;分集药包;微差爆破
Chamber blasting; Sub concentrated charge; Short delay blasting
基金项目(Foundation):
作者(Author):
田国强
TIAN Guo qiang (The 11th Engineering Bureau,China Railway Construction Corp , Xiangfan City,Hubei 441000,China)