Abstract
Liquefaction is a condition of continuous soil mass deformation at residual stress due to increasing pore water pressure that results in effective stress reduced. This study was conducted to identify the potential hazards of liquefaction in the Jondul Rawang area in Padang City. This study is to observe the soil contour and characteristics. Primary data obtained by observing the soil contour, soil characteristics, and the form of buildings, etc. Whilst, secondary data obtained from the related documents as supporting data. The results concluded that the Jondul Rawang area is potentially liquefaction area where the soil contours and characteristics could be classified as peat soil and lied in the swamps. Furthermore, if the rainfall intensity increase then flooding occurred. Then as consequences, there were many residential houses and other buildings around the area turning into tilted and drowned due to the degradation of soil bearing capacity. Therefore, requiring disaster management efforts against the threat of liquefaction in that area, both in terms of the drainage system due to flooding and overall repairs for the sewerage could work well.
Highlights
Indonesia is an archipelago country laid between three huge plates, which are the Eurasian Plate, the IndoAustralian Plate and the Pacific Plate [1]
Padang city located in West Sumatra is one region where to be crossed by the three plates
Secondary data were taken from the Central Statistics Agency Padang City in 2015 [14], such a general description of Padang City, location of the Padang city areas and others related to this study
Summary
Indonesia is an archipelago country laid between three huge plates, which are the Eurasian Plate, the IndoAustralian Plate and the Pacific Plate [1]. The meeting point of the three plates is the source of great tectonic earthquakes that frequently hit Indonesian territory. Padang city located in West Sumatra is one region where to be crossed by the three plates. The earthquake in September 2009 that struck most of the coastal areas in West Sumatra killed more than 1,000 people and 10,000 buildings collapsed [2]. Based on these facts, in this study identification of potential liquefaction of buildings in the area was conducted
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