Due to triggering of slide stability of the forebay structure came in question
At Forebay location of Rammam Hydel Project Stage_II
Construction of catch water drain, 3 cascading chute drains, construction of berms at 10m interval from crown with hll sidedrains and construction of two sausage walls at EL 1440m and 1430 and plantation along the entire hill face.
Slide initiated due to removal of toe support during excavation of forebay bench. After that sliding tookplace along the contact plane of rock and overburden and cntact between two different type of soils.