Abstract: Landslides and slope instabilities are the common hazards in the construction of highways in the mountain areas. The consequences of the hazards result in not only the economic loss but also adversely affect the construction safety and the construction schedule. The highway slope stability monitoring program for the YiBa highway construction is presented in this paper. The monitored items, technical approach as well as the purpose are introduced. The monitoring results combined with the site visits during the construction, real time slope classification and evaluation, provide a forecast of the potential slope instability and can be used as the assistant to the decision making. The monitoring results can also be used as the criteria for various slope stability mitigation techniques.

Key words: Yi-Ba Express, Slope Monitoring, Station Monitoring, Mitigation Design, Engineering Practice