ABSTRACT

The occurrence of landslides particularly on cut slopes along the roads with in Jainita hills in Northern Eastern part of Himalayas of Meghalaya state in India are common features. The geological structures of the study area are characterized by strongly jointed rocks of variable strength mainly sand stone, and shales of Oligocene age. The synthesis of geological date indicates that the slope stability problems in the area are associated with surcharging of slopes during heavy precipitation and with inflow of ground water from fissures. Increase in pore-water pressure, the heavy rainfall in area, and infiltration of water through open joints-causes changes in forces acting on a rock mass. The Highway and railway construction in mountainous regions present a special challenge to engineers and geologists. The rock falls, are due to falling of blocks of sand stone/shale from top i.e. near crown area of slide. Which are generated due to intersection of joints, with in sand stone and shale.