Location

Chicago, Illinois

Session Start Date

4-29-2013

Session End Date

5-4-2013

Abstract

Karshingsa is a hilly terrain situated in lower Himalayan region under Arunachal Pradesh in India. It expresses occurrence of severe landslides of debris flow nature almost every year as and when consecutive 3-month rainfall precipitation during peak monsoon period exceeds about 2,300 mm, all along the lower Himalayan region of Eurasian plateau most particularly in Karshingsa area. Study carried out in the lower belt of Arunachal Himalaya for about more than one decade proclaims that 45%-55% landslides are flow type origin, the debris of which are flowing like liquid. Mechanism of such flow failure is static liquefaction developed in a circumstance of its geological origin, in which the discrete boundary exists. The conventional method for finding the critical ‘c’ & ‘φ’ related to old failure zone is not valid for occurrence of such landslide. Hence, stability analysis demands a new approach with procedures. This new process accepts the real occurrence of flow slide in a study area called Karshingsa of north eastern region of India. Present study generates a new approach and recognition of new method of stability analysis for occurrence of flowtype landslide under unique situation of geotechnical aspect.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Seventh Conference

Publisher

Missouri University of Science and Technology

Publication Date

4-29-2013

Document Version

Final Version

Rights

© 2013 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Apr 29th, 12:00 AM May 4th, 12:00 AM

Finding F.O.S for Flow Type Landslide With Static Liquefaction At Karshingsa – A Case Study

Chicago, Illinois

Karshingsa is a hilly terrain situated in lower Himalayan region under Arunachal Pradesh in India. It expresses occurrence of severe landslides of debris flow nature almost every year as and when consecutive 3-month rainfall precipitation during peak monsoon period exceeds about 2,300 mm, all along the lower Himalayan region of Eurasian plateau most particularly in Karshingsa area. Study carried out in the lower belt of Arunachal Himalaya for about more than one decade proclaims that 45%-55% landslides are flow type origin, the debris of which are flowing like liquid. Mechanism of such flow failure is static liquefaction developed in a circumstance of its geological origin, in which the discrete boundary exists. The conventional method for finding the critical ‘c’ & ‘φ’ related to old failure zone is not valid for occurrence of such landslide. Hence, stability analysis demands a new approach with procedures. This new process accepts the real occurrence of flow slide in a study area called Karshingsa of north eastern region of India. Present study generates a new approach and recognition of new method of stability analysis for occurrence of flowtype landslide under unique situation of geotechnical aspect.