LANDSLIDE STUDIES
The magnitude of destruction depends on the location of the landslide
area. In the context of India it is a painful truth that most,
if not all, the areas susceptible to landslide hazards are inhabited
by the economically weaker section of the population who have
neither the resources nor the expertise to organize rehabilitation
measures out of their own. Necessarily, therefore, administrative
assistance is called for to organize remedial measures – both
short term and long term. Such administrative action is to be
controlled and managed by appropriate technological support if
optimum benefit is to be derived out of the efforts put in all
front. There are two significant aspects of this. First, it is
necessary to have a hazard zonation map of the area so that the
local area management can take pre-emptive action to meet an impending
challenge rather than to wait for the disaster to happen. Secondly,
the relief and long-term rehabilitation measures are to be worked
out once the disaster has struck – whatever be its magnitude.
The natural instabilities in the Himalayan regions are accentuated
by the human activities if the development schemes are not properly
planned and implemented. Considering importance of this problem
in development planning at local level especially in the Himalayan
states , the following thrust areas have been evolved:
Developing Data
Infrastructure
(1)
Preparation of nation-wide Inventory of existing landslides
(2) Landslide Hazard Zonation and Assessment:
-
Regional specifically for planning (1:50,000 – 1:25,000)
district level planning (1:15,000
–1,10,000 ) and for site-specific micro zonation (1:5,000–1:2,000)
Technology development
(3) Field validated zonation methodologies for long term
and short term developmental planning.
(4) Landslide Hazard Risk Analysis
(5) Monitoring and Analysis of typical Landslides
(6) Development of Early Warning System for landslides mitigation
(7) Control Measures:
(a)Scientific & Technological measures ,
(b)Validation of new technologies as successful landslide control
measures and
(c)Legislative and regulatory measures
Technology Transfer
(8) Dissemination of knowledge on landslide hazard mitigation
and prevention.
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