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https://hdl.handle.net/11681/10165| Title: | Visit to Japan to observe damage which occurred during the near Izu Oshima earthquakes, January 14 and 15, 1978 |
| Authors: | Marcuson, William F. (William Frederick) |
| Keywords: | Dam failures Earthquakes Japan Izu Oshima Soil liquefaction Tailings Case history Hydraulic structures |
| Publisher: | Geotechnical Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Series/Report no.: | Miscellaneous paper (U.S. Army Engineer Waterways Experiment Station) ; GL-79-20. |
| Description: | Miscellaneous Paper Abstract: The magnitude 7.0 earthquake near Izu Oshima occurred at 12:24 p.m. on 14 January 1978. The main aftershock occurred on 15 January and had a magnitude of 5.7. These two earthquakes are believed to have caused liquefaction of tailings and two dam failures which resulted 1n some 80,000 m³ of tailings flowing down the mountainside and into a stream. These tailings, containing sodium cyanide, contaminated the stream all the way to the Pacific Ocean, a distance of 30 km. The tailings dams were approximately 30 m high and were constructed using the upstream construction method. These dams had been previously analyzed pseudostatically using a seismic coefficient of 0.2. This case history clearly indicates that a pseudostatic analysis using routine static soil properties as input is not appropriate if liquefaction is the mode of failure. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/10165 |
| Appears in Collections: | Miscellaneous Paper |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| MP-GL-79-20.pdf | 6.73 MB | Adobe PDF |  View/Open |