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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 (1:5,0001:2,000)

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.