摘要
超前小导管技术能够改善围岩现有的物理性能,将隧洞内的软弱围岩和小导管注入的水泥浆液进行胶合,形成一个整体。在开挖过程中,形成一个以小导管为构架的承载拱,防止隧洞软弱围岩在开挖过程产生坍塌事故。从超前小导管的制作、布设和注浆等方面介绍了超前小导管技术在黄沙坑水库隧洞工程软弱围岩中的应用情况。
Advanced small pipe technique can improve the physical properties of surrounding rock. And it can glue the cement slurry in soft surrounding rock and small catheter implantation to form a whole. A small catheter for bearing arch frame was formed to prevent tunnel soft surrounding rock collapse accident during excavation process. Application of advanced small pipe technology in tunnel engineering soft surrounding rock of Huangshakeng reservoir was introduced from making small pipe,layout,grouting and other aspects.
出处
《农业工程》
2015年第1期41-43,共3页
AGRICULTURAL ENGINEERING
关键词
超前小导管
隧洞
围岩
注浆
Advanced small pipe
Tunnel
Surrounding rock
Grouting
