A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Activity of the Yakatabari mudslide complex, Porgera, Papua New Guinea
Abstract The Yakatabari mudslide complex, formed on overconsolidated mudrocks in Enga Province, Papua New Guinea, has a volume of about16 × 106 m3. Detailed examination during 17 years as part of a mining development indicates a variety of colluvium types with variable properties, but average peak shear strength values ofφ′p = 24.5° andcp′ = 11 kPa. Simple models using the infinite slope stability assumptions suggest a probability of failure of∼ 22%. Several historic failures have occurred within the mudslide complex since 1974 and rates of movement of 40–240 mm/month have been documented on a number of survey lines. Prehistoric failures are indicated by arcuate scarps across the complex. Twenty14C dates from the mudslide indicate a failure history spanning more than 40,000 years. The Yakatabari mudslide complex appears to be a very long-lived landslide. Landslides of similar longevity appear to have not been described in the literature but it is unlikely that the Yakatabari example is unique.
Activity of the Yakatabari mudslide complex, Porgera, Papua New Guinea
Abstract The Yakatabari mudslide complex, formed on overconsolidated mudrocks in Enga Province, Papua New Guinea, has a volume of about16 × 106 m3. Detailed examination during 17 years as part of a mining development indicates a variety of colluvium types with variable properties, but average peak shear strength values ofφ′p = 24.5° andcp′ = 11 kPa. Simple models using the infinite slope stability assumptions suggest a probability of failure of∼ 22%. Several historic failures have occurred within the mudslide complex since 1974 and rates of movement of 40–240 mm/month have been documented on a number of survey lines. Prehistoric failures are indicated by arcuate scarps across the complex. Twenty14C dates from the mudslide indicate a failure history spanning more than 40,000 years. The Yakatabari mudslide complex appears to be a very long-lived landslide. Landslides of similar longevity appear to have not been described in the literature but it is unlikely that the Yakatabari example is unique.
Activity of the Yakatabari mudslide complex, Porgera, Papua New Guinea
Blong, R.J. (author) / Goldsmith, R.C.M. (author)
Engineering Geology ; 35 ; 1-17
1993-05-06
17 pages
Article (Journal)
Electronic Resource
English
Activity of the Yakatabari mudslide complex, Porgera, Papua New Guinea
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