Geoscience Reference
In-Depth Information
Table 8.1 Landslide hazard reduction measures options (Crozier
2004
)
Methods for landslide
mitigation
Applied activities relating to the methods
1. Physical methods
Toe buttressing
Slope reinforcement: bolts, anchors, pins, piles
Grouting fissures and joints
Chemical reinforcement of the soils
Chunam plastering
Bioengineering
2. Hydrological
methods
Surface water diversion
Geotextile covers
Development of artificial drains
Draining of water from slope debris by horizontal drains
3. Site grooming
Removal of heavily weathered debris from the susceptible slope
surface
Lowering the steepness of upslope in the landslide prone area
Contouring the land surface to divert the flow of water
Bioengineering
4. Regulations
Imposition of laws against waste water disposal, construction of
concrete and multi-storied building and slope clearance in and
around landslide affected area
Building codes
Earth work/foundation and drainage standards
5. Land use planning
schemes
Restriction on the landslide induced activities
Rules on the changing the slope coverage
6. Education
Awareness programme and peoples participation
Radio and T.V. broadcasting about cause and effect of landslide of
the region
Development of the communication system
7. Warning systems
Periodic survey of the landslide area and continuous monitoring
Warning system based on the triggering agent i.e. accumulated
rainfall
8. Loss-sharing scheme
Insurance
Coordinating and undertaking the geological studies for
landslide hazard
mitigation.
Carrying out landslide hazard zonation for different scales as per prescribed
parameters.
Studying the factors responsible for landsliding.
Monitoring landslide.
Suggesting precautionary and preventive measures.
Developing a quick response mechanism to investigate the incidences on
emergency basis.
Evolving an early warning system.
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