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A platform for research: civil engineering, architecture and urbanism
Huashiban loose deposit landslide, Tiger-Leaping-Gorge, China: analysis and prediction
Abstract The Huashiban landslide occurred in the Tiger-Leaping-Gorge, some 18 km upstream of the proposed Upper-Tiger-Leaping-Gorge dam across the Jinsha River. The main bedrock exposed in the high, cliff-like faces of the gorge is Permian marble, with three distinct joint sets which tend to form joint-bounded blocks. During normal conditions, some blocks fall to form a scree deposit in the lower valley, while following such events as the Lijiang earthquake (Ms 7) which occurred on 3 February 1996, there was a fast accumulation of loose material above the Carboniferous chlorite schists. Such geological conditions are prone to instability, particularly when the schists are softened by heavy rainfall such as occurred in September and October 1996; 60 mm being recorded on 4th October. The study has indicated that sufficient material to cause a self-weight landslide is likely to accumulate again within a period of some 35 years, although a failure could occur sooner in the event of an earthquake and/or exceptional rain.
Huashiban loose deposit landslide, Tiger-Leaping-Gorge, China: analysis and prediction
Abstract The Huashiban landslide occurred in the Tiger-Leaping-Gorge, some 18 km upstream of the proposed Upper-Tiger-Leaping-Gorge dam across the Jinsha River. The main bedrock exposed in the high, cliff-like faces of the gorge is Permian marble, with three distinct joint sets which tend to form joint-bounded blocks. During normal conditions, some blocks fall to form a scree deposit in the lower valley, while following such events as the Lijiang earthquake (Ms 7) which occurred on 3 February 1996, there was a fast accumulation of loose material above the Carboniferous chlorite schists. Such geological conditions are prone to instability, particularly when the schists are softened by heavy rainfall such as occurred in September and October 1996; 60 mm being recorded on 4th October. The study has indicated that sufficient material to cause a self-weight landslide is likely to accumulate again within a period of some 35 years, although a failure could occur sooner in the event of an earthquake and/or exceptional rain.
Huashiban loose deposit landslide, Tiger-Leaping-Gorge, China: analysis and prediction
Liu, Heng-Qiu (author) / Hu, Ruilin (author) / Tan, Rujiao (author) / Chen, Jian (author)
2006
Article (Journal)
English
Huashiban loose deposit landslide, Tiger-Leaping-Gorge, China: analysis and prediction
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