Importance of Groundwater in triggering Landslides

The webinar will discuss on coseismic landslides has been so far based on the relationship between the load and the resistance as conventional soil mechanics supposed In contrast, this presentation attempts to shed more light on the water effects on slope instability from different directions First, the recent experiences are introduced in which ground water triggered or aggravated the extent of landslide both coseismic and nonseismic examples are taken Second, the deterioration or decay of geomaterials undergoing water action is introduced, thereby showing that the material properties of concerned
slopes are damaged with time Third, the risk of melting glacier in the course of climate warming is touched upon Note that snow avalanche was triggered by the Gorkha earthquake in Nepal with devastating effects on the local community.

Moreover, there was a chain of hazard in the recent time in which glacier melting triggered a huge landslide, the landslide mass formed a natural dam, the natural dam breached and initiated a debris flow, and the debris flow traveled hundreds of km downstream and caused flood disaster This suggests a risk of compound disaster It is a pity that the present state of engineering cannot handle the difficult situation except demonstrating people hazard maps, recommending them not to live in potentially hazardous areas However, the hazard maps have problems as well such as overestimation and underestimation of the risk of natural disasters

Organizer

Indian Institute of technology Roorkee – The Department of Earthquake Engineering, formerly known as School for Research and Training in Earthquake Engineering (SRTEE) was established at University of Roorkee (Now Indian Institute of Technology, Roorkee) in 1960, which has now completed 60 years of excellence in the service of nation. This department happens to be the only one of its kind in the country till date that deals with earthquake engineering problems and challenges. It is fully interdisciplinary since its existence, bringing together structural and soil engineers, geologist and seismologist working as a team under one roof.

The Department is engaged in teaching at Post Graduate level and conducting basic and applied research proceeding upto Ph.D. programmes along with developing Indian Standards and also training of field engineers in various aspects of earthquake engineering. Moreover, the Department of Earthquake Engineering is actively involved in carrying out sponsored research and consultancy projects through self-guiding state-of-art test facilities having capability to convert research on paper into technology for field implementation.

Indian Society of Earthquake Technology– The ISET is a founder member of the International Association for Earthquake Engineering (IAEE) and represents India on this world forum dealing with various aspects of earthquake engineering. The society is represented by its President as the National Delegate and the Vice-President as the Deputy National Delegate in the General Assembly of Delegates of the IAEE.

A number of ISET members have served on the Executive Committee of the IAEE. The Executive Committee of ISET also acts as the ‘Indian National Committee on Earthquake Engineering’. The ISET also contributes in the formulation of various Indian Standard Codes of Practice related to earthquake engineering. The President of ISET is represented on the relevant committees responsible for drafting these codes.

Event Details

DATE: 27th January 2022

TIME- 2.30 PM IST

Speaker

Prof. Ikuo Towhata
Professor Emeritus, Univ. of Tokyo, Japan
Chair, Professional Image Com., ISSMGE

Ikuo Towhata is Professor Emeritus in the University of Tokyo, Japan Also, worked at the University of British Columbia, Vancouver, the Asian Institute of Technology in Bangkok, and the Public Works Research Institute together with Univ Tokyo
Presently he serves as Chair, Professional Image Committee of ISSMGE.

Earlier he served as a Professor in the University of Tokyo from 1994 2015 He also served as a Distinguished visiting professor at IIT Bombay July December 2016 and the Life Fellow of the Indian Geotechnical Society He received several prestigious awards namely 1998 1999 Shamsher Prakash Research Award, USA, of Soil Dynamics, 2005 Heritage Lecturer, International Conference on Soil Mechanics and Geotechnical Engineering, 2018 Shamsher Prakash ISET Award 2018 for Significant Contribution in Geotechnical Earthquake Engineering, the Indian Society of Earthquake Technology, December 2018 2019 Ishihara Lecturer, TC 203 on earthquake, International Society for Soil Mechanics and Geotechnical Engineering, 7 th International Conference Earthquake Geotechnical Engineering, Rome, Japanese Geotechnical Society awards
best paper award twice, research contribution award, and technical development awards, Japan Society of Civil Engineers Book publication award Geotechnical Earthquake Engineering 2008 publ from Springer He served as Vice President for Asia, International Society for Soil Mechanics and Geotechnical Engineering for the term 2013 to 2017 and President of the Japanese Geotechnical Society from 2014 to 2016 He published 500 research articles in international journals and conference proceedings

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