Construction Risk Treatment Technique for Water Intake Tunnel Project of Wushashan Power Plants

The water intake tunnel project of Wushashan Power Plants was constructed under the complicated geology condition,which would cause several possible construction risks including the dislocation because of asymmetry settlement between shield tunnel and working well,losing efficiency of bearing seal caused by long time wear and the vertical lifting sealing device in the high water stress environment,etc.After a series of technique measures,the risks have been avoided.Then,the design requirements have been satisfied and the construction has been completed well.