The karst surface collapse in Wuhan happened at the intersection between the ne first terrace binary-structured deposits of Yangtze River and carbonate in the core of E-W syncline.

By means of the analysis of the quality of the surface water and ground water in the syncline core above the tunnel, the flow modes of the surface water and ground water in the syncline are discussed.

The possible water quantities flowing into tunnel are calculated initially. There are possible zones of groundwater inflowing in the section of shallow tunnel, syncline core and faulted zones.