Abstract
The large water inrush during excavation construction is a prominent problem in tunnels because of their fractured surrounding rock conditions and complex lithology, which seriously affects the tunnel construction progress and safety. Advanced grouting ideas of combining plugging and draining, mainly involving draining and supplementing water plugging, have been put forward according to different geological conditions. In this study, we used three different advanced grouting techniques to dispose of the water inrush from the palm face, block the large water inrush points in time, control the water inrush from the palm face, and successfully dispose of the large water inrush from the tunnel. Through a comparative analysis, we found a more effective advance grouting technology under different geological conditions, which can be applied for future use by other researchers.
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