On 15th August 2018, a cut slope failure occured near Kuthiran on the new road under construction to the Kuthiran transportation tunnel.   Due to infiltration of water during heavy rainfall,  increase in pore water pressure and decrease in shear strength
Loose core stones present on the top portion of the cut slope; cross cutting joints are present below the overburden on the side of the road.
Kuthiran slide 3
Kuthiran village
Loose soil and loose trees near the crown may be removed, installation of  geonet/catch net for arresting the fall of weathered core stones and cross jointed rock.
Due to infiltration of water during heavy rainfall,  increase in pore water pressure and decrease in shear strength of the overburden material above cross jointed rock mass  resulted in sliding of overburden material along the cut slope.