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題 名 | 921地震霧峰、太平地區液化及下陷調查分析=Liquefaction and Settlement in Wufeng and Taiping Counties During Chi-Chi Earthquake |
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作 者 | 褚炳麟; 張益銘; 陳冠閔; 徐松圻; 張錦銘; | 書刊名 | 地工技術 |
卷 期 | 77 2000.02[民89.02] |
頁 次 | 頁19-28 |
分類號 | 441.103 |
關鍵詞 | 液化; 地震; 下陷; 側向擴展; Liquefaction; Earthquake; Settlement; Lateral spreading; |
語 文 | 中文(Chinese) |
中文摘要 | 921集集大地震在臺中縣內除了造成臺中港數個沉箱碼頭因液化而導致地層下陷與滑栘外,靠近沿海之清水鎮及大肚鄉亦有液化噴砂災情,且由於此次地震之震央位於臺灣七部地區加上強度之大及延時極長,致使連靠近西部麓山帶之霧峰鄉及大平市也發生因液化而導致嚴重災害。本文針對霧峰鄉及大平市液化之範圍及相關災情作一詳細介紹及初步分析。液化除了冒水噴砂外,尚有地層及房屋下陷、傾斜、水平位移,以及側向擴展等現象,主要液化噴砂位置則大多位於河道之兩側,且在河流彎道之沉積側居多。而可能發生湃化之深度及及噴砂性質,可由所蒐集到之鑽孔資料及粒徑分析結果得到間接證實。 |
英文摘要 | Soil liquefaction due to Chi-Chi earthquake was found at Taichung harbor and several counties along the coast in Taichung. As a result of this strong earthquake occurred at the middle of Taiwan and the duration was long enough, the counties, Wufeng and Taiping, next to the western mountain areas also had serious damages due to soil liquefaction. Locations of soil liquefaction and corresponding damages in these two counties are investigated and described in this paper. There are several phenomena associated with soil liquefaction can be observed, they are sand blows, settlement and inclination of ground or buildings, lateral movement and spreading, and flow failure. The major places of sand blows are found to locate close to or beside the rivers, especially the sedimentation side of a river. The possible depths of liquefaction and soil properties are analyzed using collected boring log data and results of grain size distribution of the sand blow. |
本系統中英文摘要資訊取自各篇刊載內容。