摘要
介绍了在支洞工程的施工中，利用超前锚杆短循环法解决在砂砾石地层中挂口难题的具体措施和关键技术，实现了工程自身及周围国道公路、升压站等重要建筑物的安全技术要求。
The advanced anchor short cycle method used for solving the technical problems encountered while constructing tunnel branch portal in sandy and gravel formation is introduced. Safety technical requirements referring to state run road, pressure lifting station and the important buildings nearby are met.
出处
《探矿工程》
1999年第5期54-55,共2页
Exploration Engineering(Drilling & Tunneling)
关键词
隧洞持口
短循环
人工开挖
超前锚杆
引水隧洞
sandy and gravel formation, tunnel branch portal, advanced anchor, short cycle, light blasting, manual excavation
