Abstract
On 28 June 1994 when 240 mm of rainfall occurred, a huge debris slide took place at Parmachi village in the Varandh Ghat of the Konkan district on the west coast of India. The debris slide resulted in extensive damage to property and killed 20 people in addition to numerous animals. The slide is considered to have occurred due to the development of hydrostatic pressure at the base of colluvial material, such that slope failure took place at the rock/soil interface. In view of the significance of such slides to settlements and highways, it is proposed that a warning system is developed based on a rainfall threshold of 170 mm in a 24-hour period.
Résumé
Le 28 juin 1994 après une chute de pluie de 240 mm, un énorme glissement d'eboulis dans le village de Parmachi sur la côte occidentale de l'Inde (Varandh Ghat, district de Konkan). Le glissement a provoqué des dégâts considérables et tué 20 personnes. Il a été provoqué par une augmentation de la pression hydrostatique à la base des colluvions, la rupture se produisant à l'interface roche en place/éboulis. Compte tenu de l'importance de tels glissements sur l'habitat et les routes, la mise en place d'un système d'alarme, basé sur un seuil de 170 mm de précipitations en 24 heures, est proposé par les auteurs.
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Received: 21 February 1997 · Accepted: 5 January 1998
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Nagarajan, R., M. V. Khire. & Khire, M. Debris slides of Varandh Ghat, west coast of India. Bull Eng Geol Env 57, 59–63 (1998). https://doi.org/10.1007/s100640050021
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DOI: https://doi.org/10.1007/s100640050021