摘要
三峡二期下游围堰防渗墙墙底基岩与防渗轴线地层中分布的块球体,其形状不规则且岩性坚硬,给造孔施工带来极大困难,严重影响围堰的施工进度。通过试验,钻孔成槽防渗墙时I、II期槽内均采用了水下聚能爆破、裸露爆破和钻孔爆破等技术,解决了施工中的难题。
There are some hard large boulders under the anti-seep wall of cofferdam in the Three Gorges Project area. Their irregularity brings drilling implementation tremdous difficulties. The technique of underwater blasting is used to solve the tickler in implementation.
出处
《爆破》
CSCD
2004年第1期69-72,共4页
Blasting
关键词
围堰防渗墙
水下爆破
聚能爆破
裸露爆破
钻孔爆破
Three Gorges Project
second stage cofferdam
anti-seep wall
underwater blasting
