中文摘要：

以那丘隧道3种特殊岩溶断面为例,从炮孔布置、装药结构和起爆网络等3个方面提出了爆破设计方案,同时对钻孔、装药填塞、超欠挖控制等施工要点进行了阐述。现场施工效果证明了针对特殊岩溶断面所提出的爆破设计方案和施工方法合理,可为类似特大岩溶隧道爆破施工提供依据和指导。

英文摘要：

Tunnels with three different kinds of fracture surface through karst area were taken as examples for study,blasting programs for them were proposed in terms of blastholes arrangement,explosive charge structure and detonating network,with key points in operation of drilling hole,charge filling and over-excavation and under-excavation control specially elaborated. On-site practice testified the proposed blasting program and operating method being reasonable for such tunnels through karst area with special sections,which can be taken as reference and guidance for the blasting operation in large karst area in the future.