Characteristics of Tunnel Water Inrush and Progress in Grouting Materials in Mira Mountain Tunnel

Mira mountain tunnel is located in high altitude and cold area. Due to the influence of fragile ecological environment such as thin air and complex geological conditions, the tunnel would be liable to cause geological hazards. This paper will analyze the characteristics and causes of geological disasters in Mira mountain tunnel, combined with the research progress of grouting water stop material for tuff tunnel in high altitude and high cold area, so as to further guide the actual grouting construction and reduce the risk of geological disasters.