水下炸岩成孔困难的原因及对策

Reason and Countermeasures of Difficulty in Forming Blasthole of Exploding Rock Underwater

对连云港田湾核电站厂区自备码头水下炸岩成孔困难进行了分析，采用套管跟进钻具有效解决具有覆盖层岩石成孔困难的问题。

In this paper, the difficulty in forming blasthole of exploding rock underwater in nuclear power plant, Tianwan, Lianyun Port, is focally analyzed. The author puts forward an effective method to solve such rock with overburden, that is casing pipe follows up drilling tool.