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題名 | 深開挖管湧災變處置案例=Case History on Piping Failure and Remedial Measures for a Deep Excavation |
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作者 | 劉國鎮; 段紹緯; 王劍虹; 王瑞芳; | 書刊名 | 地工技術 |
卷期 | 66 1998.04[民87.04] |
頁次 | 頁65-74 |
分類號 | 441.13 |
關鍵詞 | 管湧; 灌漿; 透水試驗; 修復設計; Piping; Grouting; Permeability test; Remedial measure; |
語文 | 中文(Chinese) |
中文摘要 | 本文描述位於臺灣南部港口碼頭之深開挖工程,於13.75公尺開挖完成,在構築大 底紅紮鋼筋期間,發生管湧破壞案例。針對管湧災變發生經過,原因及修復設計,加以分析說 明;修復設計採用填充及止水灌漿,配合降水措施及監測系統完成本工程之修復。本管湧案例 導致破壞之原因,可能係由於開挖面下方具有黏土夾層,加上颱風帶來大量豪而,造成黏土層 下方水壓上升,導致管湧破壞。 |
英文摘要 | This paper presents the sequence, failure mechanism and remedial measures of a piping failure occurring during a deep excavation at a harbor in southern Taiwan. The piping failure occurred after a 13.75 m deep excavation had been completed and after 5 days heavy raining. The causes of the pipping failure could be associated with the presence of a thin clay blanket below the bottom of excavation, together with the rising of groundwater table due to waves and heavy rains brought by a typhoon. After the incident, the remedial measures taken included instrumentation, groundwater pumping as well as grouting to fill cavities and to stabilize disturbed soils. |
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