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National Chung Hsing University Institutional Repository - NCHUIR > 工學院 > 土木工程學系所 > 依資料類型分類 > 期刊論文 >  Analysis of the Chiufengershan landslide triggered by the 1999 Chi-Chi earthquake in Taiwan

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/128332

標題: Analysis of the Chiufengershan landslide triggered by the 1999 Chi-Chi earthquake in Taiwan
作者: Shou, K.J.;Wang, C.F.
關鍵字: Chi-Chi earthquake;landslide;back analysis;probability analysis;southwestern taiwan;slopes
日期: 2003
Issue Date: 2012-12-07 14:41:16 (UTC+8)
關連: Engineering Geology, Volume 68, Issue 3-4, Page(s) 237-250.
摘要: A disastrous earthquake rocked Taiwan on September 21, 1999, with magnitude M-L = 7.3 and an epicenter near the small town of Chi-Chi in central Taiwan. The Chi-Chi earthquake triggered landslide on the dip slope at the Chiufengershan. In this study, a review of the topography and geology of this area was followed by field investigations. Laboratory testing was applied to understand the geomaterial composing the slope. Then, based on a series of limit equilibrium analyses, the failure mechanism of this landslide and the risk of the residual slope were studied. According to the stability analyses, the pre-quake slope is quite stable, with factor of safety of 1.77 (dry) to 1.35 (full groundwater level); explaining why there is no written record of a landslide here for the past 100 years. In contrast, a back analysis shows that the Chi-Chi earthquake-induced dynamic loading is far more than the dip slope can sustain, due in part to the short distance to the epicenter. A Monte Carlo type probability analysis suggests that the residual slope is more dangerous than the pre-quake slope and needs more attention. (C) 2002 Elsevier Science B.V. All rights reserved.
Relation: Engineering Geology
Appears in Collections:[依資料類型分類] 期刊論文
[依教師分類] 壽克堅

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