員林鎮土壤液化現狀調查成果及初步研判

Field Reconnaissance and Preliminary Assessment of Liquefaction in Yuan-Lin Area

蘇鼎鈞(Ting-Chiun Su) ； 姜凱文(Kai-Wen Chiang) ； 林向榮(Shiang-Jung Lin) ； 王復國(Fuh-Gwo Wang) ； 段紹緯(Shaw-Wei Duann)

《地工技術》 77期 (2000/02) Pp. 29-38

https://doi.org/10.30140/SG.200002.0002

摘要

民國88年9月21日凌晨1：47分發生的集集大地震，地震規模高達7.3，造成2300多人因而喪生，災情極為慘重。其中彰化縣的員林地區發生土壤液化現象，道路及建築物沉陷傾斜情形嚴重。本文為彰化縣員林鎮現地踏勘及訪談里村長和居民之土壤液化現狀調查成果，除將地表有明顯液化表徵及道路建物有明顯因土壤液化發生沉陷傾斜者予以拍照記錄外，並依現狀調查結果，將其位置或範圍標示於圖上。惟若地表如果沒有明顯表徵，並不表示深層土壤沒有液化情形之發生，實際土壤發生液化可能分佈範圍，則仍宜經由現場鑽探、試驗，以及液化評估分析比對後，方可獲得較可靠的結果。本文中有關土壤液化災情之記錄，將供後續進一步利用地質調查結果，進行液化評估及分析比對時之參考資料，以建立本地區之液化潛能分區。

關鍵字

液化

並列摘要

The Chichi earthquake, with a magnitude of (Ritcher Scale) 7.3, struck central Taiwan in the early morning of 21 September, 1999 at 1:47 am, and caused wide damage not only in the central region but as far as the whole Taiwan island. More than 2,300 people died in this big disaster. The Yuan-Lin area in ChangHua County suffered extensive damage including settlement and inclination of buildings and roads due to liquefaction.This article presents the results of field reconnaissance of the liquefaction affliction. Several locations, including obvious phenomenon of sand boils on the ground and inclination or settlement of the roads and buildings due to liquefaction were photographed and marked on the map. Nonetheless, without obvious sand boils on the ground do not mean that there is no liquefaction happened underground. In order to determine possible areas where liquefaction could take place, extensive evaluation must be undertaken.The records of liquefaction affliction presented in this article will provide correlative information for further assessment and analyses of the liquefaction problem, and thus to assist in determining liquefaction potential in the entire Yuan-Lin area.

並列關鍵字

liquefaction