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RISS 인기검색어
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- 저자 : ( Imam Achmad Sadisun ) (검색결과 1 건)
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( Imam Achmad Sadisun ),( Indra Andra Dinata ),( Rendy Dwi Kartiko ) 대한지질공학회 2019 대한지질공학회 학술발표회논문집 Vol.2019 No.2
Indonesia is one of the world’s most natural disaster-prone country from landslides. These landslides mostly occur at areas having steep to very steep slopes, intensive weathering processes and high to very high rainfall intensity. Generally, debris flows referred to mudflows or lahars. These types of landslide are common type of fast-moving landslide. In this regard, the occurrence of several landslides followed by the debris flow often make a lot of casualties and very terrible destructions in some areas of Java Island, Indonesia. For example, Jemblung Landslide on December 12, 2014 has 139 causalities. Accordingly, some debris flow modelling have been conducted to determine run-out distribution characteristics of debris materials at the depositional areas. The concept of debris flow modeling is based on the equations of momentum, continuation, riverbed deformation and erosion/deposition and riverbed shearing stress. From the modeling of Pasir Panjang landslide case, the viscosity value of 0.3 indicated the best fit simulation result. The flowing material of this landslide case has very long distance, 2.3 km in approximate. It occurs because 275,295 m3 volume material which flowing is supported with 25.58 km/hour of maximum flow rate and relatively straight flow track in 35°-45° of slope angle.
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