Abstract: The complicated karst geological conditions are widely distributed in the Coty of Wuhan and karst geological hazards are frequently occurred. Based on the special karst investigation of the proposed Dadonghu deeply buried tunnel in Wuhan, this paper summarizes the karst rock cavity development along the proposed tunnel alignment with different statistical methods. The paper also provides recommendations for the construction measures under various unfavorable karstic geological conditions for the proposed deeply buried tunnel.

Key words: Karstic Rock Cavities, Development Characteristics, Karst geology, Geological Hazards, Deeply Buried Tunnels