landslide risk assessment & mitigation measures in pakistan.ppt

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Landslide Risk assessment & Mitigation measures in Pakistan

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Institutional cooperation between Pakistan and Norway

Landslide Risk assessment & Mitigation measuresBetween Geological Survey of Pakistan & Norwegian Geotechnical Institute

Collaborating Institutes

Geological Survey of Pakistan(GSP)&

Norwegian Geotechnical Institute(NGI)

Cost of the Project approved by the Steering CommitteeContribution by GSP(in the form of logistics and office utilities)

= 1.5 Million Pak Rupees

Contribution by Norwegian Government = 2.99 Million NOK

Duration of Project2006-2009 (three years)

Commencement of the ProjectNovember 2006

Major ObjectivesMapping of landslide hotspots in Muzaffarabad and the valleys along the affected area and selection of two hazardous sites for more detailed investigations. Collection of data and detailed analysis of two hazardous slopes. Evaluation and suggestion of mitigation measures for two hazardous slopes. Training of Pakistani partners at NGI. Assistance for inventory of historical landslides and carrying out a national landslide hazard zonation and management of landslide risk challenges in Pakistan (long term). Workshops in Pakistan and Oslo.

Achievements

Achievements

Landslide Mapping Using GIS and Remote Sensing

Bagh-Balakot Fault

2005

October 9, 2005 - September 15, 2005

Quickbird Image, 0.6 m resolution of Hattian Bala rock avalanche

Hattian Landslide

Minhaj Camp

Ehsaas Camp

Debris Flow A Debris Flow B

Landsliding at Maira Tanoulian

Massive cracks

Massive cracks

?

Houses

Naili Landslide

Evacuate houses above and below landslides

Bandi Saman

Old scarp (h=8-10 m) New scarp (h=3-5m)

40 m

60 m 350 m

Old landslide has resumed in Monsoon season (Photo 10, August)

Ban No. of deaths = 120 No. of houses destroyed = 44

Baigrah and Ban villages near Balakot

Baigrah No. of deaths = 80 No. of houses destroyed= 45

Baigrah

Ban

Bagaar village near Balakot

No. of deaths = 50 No. of houses destroyed = 25

New Sliding Creeping

Another view of the creeped area

Fluvial Material Collapse due to landslide on the Right Bank of Tariqabad Nala

Makree Village

Semi Circular Gravitational Crack on the Slope of Makree Area

Achievements

Two hazardous sites have been selected for more detailed investigation

1.Badhiara Landslide 2.Dhanni Bakalan Landslide

Badhiara Landslide

Achievements

Dhanni Bakalan Landslide

Achievements

63 m

Achievements

Collection of data and detailed analysis of two hazardous slopesSoil and rock samples have been collected from the two selected sites

Achievements

Trainings of Pakistani Partners at NGI1. GIS methods related to landslide mapping March 5-14, 2007. No. of trainees = 3

2. GIS methods related to terrain analysis April 19 May 09, 2008. No. of trainees = 1

3. Stability Analysis and Mitigation Measures April 14 to May 02, 2009. No. of trainees = 2

Achievements

Establishment of IT Lab in GSP Office

Achievements

COMPOSITE GEOLOGICAL HAZARD ZONATION MAP OF HATTIAN BALA & SURROUNDING AREAS.

Methodology for preparing Hazard Zonation Map

Geomorphological Map

Geohydrological Map Topographic Map Geological Map Base Map

Combination of all field data (Tables) and spatial data through GIS

Process Map

Hazard Zonation Map

Achievements

WorkshopThe workshop scheduled to be held at Oslo was arranged at Bangkok (Thailand) on October 13-14, 2008. The title of the workshop was Experience of Geotechnical Investigations and Mitigation for Landslides. Participants from Bangladesh, Bhutan, India, Nepal, Norway, Pakistan, Sri Lanka and Thailad shared their experiences related to the subject.

What is remaining to achieve?Detailed analysis of two hazardous slopesEvaluation and suggestion of mitigation measures for two hazardous slopes

Workshop at the end of the ProjectThe project progress was badly affected due to security situation in the country as the Norwegian counterparts didnt come for detailed investigations of the two selected hazardous slopes

Grant received so far (both GSP and NGI)

Rupees nine million four hundred sixty two thousand (Rs. 9, 462,000) (through Planning Division of Pakistan)

Grant spent and balance available

Expenditures By NGI = Rs. 4,560,000 By GSP = Rs. 4,150,304 Total = Rs. 8,710,304

Remaining Balance Rs. 751,696

Completion DateNovember 2010

Major benefits to PakistanThe output of the project will be beneficial for rehabilitation and reconstruction activities in the 2005 Earthquake affected areas of Pakistan in general, and Jhelum Valley, AJK in particular.

Communication system will be in much better condition along Jhelum Valley road of regional importance after taking mitigation measures for landslides.GSP will be in a position to strengthen their capacity in the field of assessment ,prevention, mitigation and management of the risk caused by landslide hazard. Experiences from the project will assist GSP in preparation of a strategic plan on how Pakistan should set priorities for handling the risk caused by landslides in a long term prospective.

THANK YOU