三门核电站负挖工程爆破施工设计

DESIGN OF NEGATIVE EXCAVATION BLASTING CONSTRUCTION OF SANMEN NUCLEAR POWER STATION

通过三门核电站负挖工程爆破设计实例,介绍了复杂环境下深孔爆破、预裂爆破、保护层爆破施工的设计思路;提出了孔排距、炸药单耗、装药结构、起爆方式等爆破参数的确定方法。该工程负挖爆破施工取了很好的效果,对类似工程有一定的参考价值。

Regarding the practical engineering case of the design of negative excavation blasting fulfilled in blasting construction of Sanmen nuclear power station, the paper discussed a designing idea of channel blasting construction under complicated environment in terms of its long-hole blasting, pre-splitting blasting and protection layer blasting, and brought forward the determining methods of hole row margin, unit explosive assumption, charge structure and ignition patterns. The blasting based on the design idea saw a good demolition result and was of reference value to similar engineering.