Pipe lodgepole-steeltunnelsupport technique is a strong composite support system consisting of advance pipe lodgepole, support stell vault, tin plate packer and working surface plug-back.
The application of composite steeltunnelsupport technique to tunnel collapse handle at the Zhenlong Hydropower Station, Shimian and its applicable conditions as well as perspective are set forth.
So steel fiber reinforced shotcrete should be the first choice for tunnelsupport on the condition of tunnel crossing high ground stress and having rock-burst tendency.