Abstract: The route of Taiwan Taoyuan International Airport Access MRT Construction Project at the Taiwan Taoyuan International Airport section mainly passes through with shield tunnel and is about 7.2 km. Seven cross passages have been set up. The excavation length for cross passage 1(CP1) is 29 m and CP1 is the longest cross passage in Taiwan now. The CP1 was placed near river and this caused a series of impacts in the excavation, ground treatment, and dewatering. This paper describes the problems and solutions of CP1 during construction.

Key words: shield tunnel, cross passage, ground treatment, dewatering