During the construction of highway tunnels under complex geological conditions

various geological disasters are frequently encountered which include roof collapsing

water-bursting

mud-bursting

rock-bursts and gas explosion. These disasters not only present difficult tasks for construction

but also cause loss of lives

delay of schedule and economical loses.Therefore how to take reasonable measures to predict

evaluate and prevent these geological disasters is an urgent task in construction of highway tunnels.Through the case study of mud-rush disaster of Xiaopiliu-Tunnel in Changde-Jishou Highway

the paper discusses the application of the integration exploration technology in tunnel mud-rush disaster.It is indicated that the use of TSP203 can explore the scope and cause of mud-rush with results in good agreement with those obtained by electrification method.Combined with the geological information

TSP203 can precisely determine the locations of faults and week rock interfaces ahead of the tunnel face

and also evaluate the effect of mud-rush disasters.This study shows that the available reasonable and effective technologies can detect and predict geological disasters

which will play a important role in tunnel constructions.