Research conclusions:The hydrogeologicaland engineering geological survey and the comprehensive analysesof the data obtained from geophysicalprospecting and drilling indicate that in the tunnel area, the developmentof regional structure and the rich -water conductivity of the fracture zone of the fault lead to the groundwaterdevelopmen.t The groundwater mainly contains the faultzonewater and the bedrock fissurewater. Generally, the faultzonewater is heavy richwater,while the bedrock fissurewater isweak -medium richwater. The concentrated inrushwater segments of the tunnel are mainly in the zone of developed faults. As the inrush water of fault is large and the inrush may happen, the water blocking should be as the main protective measures and the geological forecast in advance should be well conducted during the construction period.