Slope Stability Analysis of the 3rd Kuhrang Tunnel Portal

Green marls located in the slope of reservoir dam in the 3 rd Kuhrang tunnel have considerable swelling behavior, which may fail after filling the reservoir with water. Slope collapse of the 3 rd Kuhrang tunnel in big volume may cause the closure of the portal and bring the transportation of the water supply to an end. This study investigates the slope stability of the 3 rd Kuhrang tunnel based on different tests of marl. In this