Landslide Mitigation - Semi-quantitative Approaches for Landslide Assessment and Prediction - page 224

Chapter 8
Landslide Mitigation

Abstract The fundamental impetus of any kind of natural hazard and risk man-
agement is an awareness of threat, a notion of responsibility and a brief that human
action might reduce the risk. Various components such as susceptibility analysis,
hazard and risk identi

cation, consequence analysis, hazard analysis, and risk
evaluation are included in the landslide management framework. In the present
study of the Shivkhola Watershed for slope stabilization, some mitigation measures
have been proposed on the basis of community wisdom assessed through percep-
tion study on people living in four landslide prone villages such as Paglajhora,
Tindharia, Gayabari and Giddapahar. The value of experience depicts that Catch-
water drain along the junction between road and the hill slope, jhora training,
retaining wall, catchment water drainage, introduction of vegetation etc. may bring
stability of slope. Besides, author

field investigation suggested that the
construction and maintenance of buildings, introduction of landslide warning sys-
tem, and improvement of soil strength would be taken into account as landslide
mitigation measures. Here, some control works and restraint works have been taken
into account to reduce landslide hazard and risk.

' s intensive

Keywords Shivkhola watershed Control work Restraint work Value expe-

rience Slope stability

8.1 Introduction

Natural hazard and risk management includes of the threat, a notion of responsi-
bility. Various components such as scope de cation,

consequence analysis, hazard analysis, risk calculation, and evaluation are included
in the landslide management framework. No hazard modi

nition, hazard and risk identi

cation method should be
treated as absolute safe. Most methods developed to address the physical hazard are
best described as control measure, reduction measures or mitigation measures-not
preventive measures.

' Prevention ' is the ultimate form of event modi cation.