Analysis of Landslide at Outside Dumping Area Air Laya Coal Mining Site, Indonesia

Asof, Marwan and GOFAR, NURLY and Rifai, Ahmad (2005) Analysis of Landslide at Outside Dumping Area Air Laya Coal Mining Site, Indonesia. Proc. 3rd Intl. Conf. on Geotechnical Engineering. pp. 170-181. ISSN 978-981-08-52016

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Abstract

A landslide occurred at final fill slope Outside Dump Air Laya Coal Mining, Indonesia on 27 November 2002. The incident involved a translation movement of soil fill as long as 1.5 km towards Enim River and several rotational slope failures along the movement. It resulted in the fall down of an electrical tower supplying electrical current to the surrounding area. It also damaged the mud collection pond and dikes constructed on the toe of the fill slope as well as agriculture land. There were no fatalities and serious injuries in the incident. The paper presents a comprehensive investigation into the cause and mechanism of the landslide. A number of technical findings are of interest, including the failure mechanism of the fill and effects of surface cracks and antecedent rainfall on slope stability. The investigation concluded that the landslide was started by cracks existing on the fill surface. The prolonged and heavy rainfall that preceded the landslide resulted in significant water ingress into the ground. Both factors played contributory parts causing the landslide incident.

Item Type:	Article
Uncontrolled Keywords:	landslide, surface cracks, heavy rainfall, infiltration, undrained condition.
Subjects:	T Technology > T Technology (General) > T60-60.8 Work measurement. Methods engineering > T60.A3-Z General works Work measurement T Technology > TN Mining engineering. Metallurgy > TN275-325 Practical mining operations. Safety measures
Divisions:	03-Faculty of Engineering > 31201-Mining Engineering (S1)
Depositing User:	Mr Marwan Asof
Date Deposited:	29 Sep 2020 02:01
Last Modified:	08 Apr 2023 00:46
URI:	http://repository.unsri.ac.id/id/eprint/35835

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