PLAN DESIGN AND CONSTRUCTION MANAGEMENT STUDY OF KAO-133 HIGHWAY AFTER TYPHOON MORAKOT DISASTER

Typhoon Morakot was the most damaging typhoon to make rainfall in half a century, caused serious damages to southern Taiwan. Most major highways and bridges located in the area suffered severe damages such as landslides, rockfalls and debris flows in addition. It caused significant loss of lives, property and an economic loss of over US$5 billion. The administration system identified 675 dead and 24 persons missing in addition. One of the most important watersheds on the island (Taiwan), the Lawnon River Basin suffered from the severest slope disasters during this event, was selected for study. Previous studies have rarely shown this basin as susceptible to landslides and debris flows. Accumulated rainfall in the Lawnon River Basin was up to 2500mm. Kao-133 highway located Lawnon River Basin alongshore was the major transportation line in Bolao-Hsinfa hot spring area, incurred severely damaged. This paper began with conducting extensive geological investigation and geophysical exploration analysis to preliminarily access the failure mechanisms of geo-hazards along Kao-133 highway. Moreover, propose some plan and design strategies for rehabilitation. To exchange a number of construction and management experiences eventually