隧洞掘进塌方处理及不良地质条件下管棚法超前预支护技术

Tube Awning Law in Advance Pre-supports and Protections Technology under Tunnel Landslide and Unfavorable Geological Condition

在工程隧洞项目施工过程中,经常遇到不良地质条件,对不良地质条件采取怎样的施工方法尤为重要,直接影响到整个工程的质量、安全、进度以及工程的最终成本.结合本工程的地质条件采取管棚法超前预支护的实践工作,详细阐述了管棚法穿越断层破碎带的应用技术,并强调了注浆在管棚法预支护技术中的重要作用.

In the tunnel construction, we meet the adverse geological condition frequently. So adopting what kind of construction method is particularly important. It can take a direct impact on the entire project quality, security, progress as well as final project cost. According to the geological condition of this project, the tube awning law in advance pre--supports and protections is applied. This paper elaborates in detail the technology of using tube awning law to traverse broken fault crushed zone, and stresses the importance of thick liquid in tube awning law pre--supports and protections technology.