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Himalayan Geology, Vol. 31
(2), 2010, pp. 133-143, Printed in India
Rock mass and slope mass characterization of Kaliasaur landslide area (Uttarakhand)
on National Highway-58 and correlation of results with deformation
conditions
SHIVASHISH KIMOTHI*, KISHOR KUMAR, SUDHIR MATHUR
Geotechnical Engineering Division, Central Road Research Institute, New
Delhi - 110025, India
*Email:
shivashishkim@gmail.com
Abstract: The study area, located on Kilometer-147 at National
Highway-58 in Kaliasaur, Uttarakhand, a part of the Lesser Himalaya, was
chosen for the rock mass and slope mass characterization. The area was
divided into 197 grids of equal size along the National Highway for the
slope stability analysis based on rock mass and slope mass characterization.
Structural mapping was carried out for data on rock types, their attitude
and quality condition i.e. weathering conditions. The type of failure was
assessed on the basis of stereographic analysis of discontinuities. The
results make it evident that rock mass quality is significantly affected by
the weathering and alteration of the rock mass, as the rock mass falling in
weak range of rock mass characterization is also invariably associated with
the weathered zones.
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