Landslide Risk Mitigation Strategy

Landslide Risk Mitigation Strategy

To carry out the risk mitigation work, a team of cross-sectoral and interdisciplinary professionals which include geologists, engineers, architects, physical planners, public/community, disaster managers, policy and decision makers have to play a proactive role. The mitigation and management strategy must have a combination of features like:

Understanding Disaster Risk

Hazard Zoning

Mapping and Investigations: Conduct geological and geotechnical studies in landslide-prone areas.

Scientific Assessment: Analyze factors contributing to landslides to predict their likelihood and better understand the forces driving them.

Climate Change Impact: Assess how changing climate patterns influence landslide occurrences.

Research and Development: Develop methods to minimize the factors that contribute to landslides.

Hazard Risk and Vulnerability Assessment

Evaluate vulnerability based on social, economic, ecological, gender, and equity aspects.

Assess changes in risk and vulnerability under different climate change scenarios.

Warning Dissemination

Ensure adequate infrastructure and facilities to provide timely access to at-risk communities.

Deliver warnings effectively to all, including remote, rural, and urban populations, with regular updates for those in danger zones.

Monitoring and Early Warning Systems

• Implement effective monitoring, warning mechanisms, and dissemination strategies to mitigate landslide risks.

Investing in DRR–Structural measures

Structural measures are those measures which include physical construction to reduce or avoid possible impact of hazards. These measures include engineering solutions, such as

• Drainage control measures through provisions of surface and subsurface drains.

• Retaining and reinforcement structures.

• Deflection spurs at the toe to avoid erosion from the rivers.

• Landslide treatment methods like shotcreting, grouting, netting, wire-meshes and sealing of cracks / fissures on the hills.

• Adopt remedial techniques like buttresses, shear keys, sub-drains, soil reinforcement etc.

• Construction of retaining walls, afforestation, terrace farming.

Investing in DRR–Non-Structural Measures

Non-Structural Measures are all such measures where efforts are made to mitigate the impact of landslides without construction of disaster resistant features. Methods may include:

• Hazard Mapping and Effective Land Use Planning: Landslide hazard maps help identify high-risk areas, preventing the development of settlements in these zones. Such regions should ideally be reserved for permanent vegetation to maintain stability.

• Surface Drainage Management: Implementing surface drainage control measures reduces water infiltration during heavy rainfall, limiting landslide movement. Reforestation efforts aid in stabilizing the topsoil, preventing erosion and runoff, thereby reducing landslide risks.

• Landslide Monitoring and Early Warning: Continuous monitoring of landslide-prone areas enables early detection of potential disasters, allowing timely warnings to be issued to at-risk populations.

• Engineering Solutions: The construction of protective structures such as retaining walls, rock bolting, piling, and net installations helps mitigate landslides by reinforcing slopes and preventing debris movement.

• Community Engagement and Public Awareness: Encouraging local participation and spreading awareness about sustainable development and landslide mitigation techniques through collaboration with local authorities and non-governmental organizations.

• Afforestation in Vulnerable Areas: Planting suitable vegetation in landslide-prone regions can help stabilize the soil and reduce the risk of landslides to a certain extent.

• Education and Awareness Initiatives: Educating and raising awareness among residents living in landslide- prone areas to enhance preparedness and risk reduction.

Capacity Development

• Training for Professionals: Equip experts with the skills to manage slope failures, landslide remediation, and emergencies by encouraging the use of observational design and construction methods, along with training in contingency planning.

• Mass Media Awareness Campaigns: Utilize media platforms to spread awareness and educate the public on landslide risks and safety measures.

• Promote a Culture of Disaster Risk Reduction: Encourage proactive disaster prevention, mitigation strategies, and effective risk management practices.

• Encourage Community Radio: Utilize community radio to disseminate critical information and updates on disaster preparedness.

• Multi-Institutional Collaboration: Establish multi- disciplinary teams for on-site landslide investigations, document lessons learned, and share findings for better preparedness.

• Enhancing Community Resilience: Strengthen community capacities to manage and respond to disasters using a multi-hazard approach.

• Training for Local Groups: Provide disaster management training for panchayat members, self-help groups (SHGs), National Cadet Corps (NCC), National Service Scheme (NSS) volunteers, youth, and local organizations.

More Measures to Control Landslides include

• Micro Zonation so as to regulate settlements in hazard prone areas,

• National Landslide Risk Mitigation Strategy 2019

• Landslide Risk Mitigation Scheme

• National Guidelineson     Landslidesand     Snow Avalanches

• Landslide Atlas of India

• National Landslide Susceptibility Mapping

• Grow fuel / fodder trees in all of the common lands.

• Plantation in barren areas, especially on slopes, with grass cover is an important component of Integrated Watershed Management Programme.

• Grazing should be completely restricted. After the area is completely protected from grazing, better grasses can be planted.