壩工與隧道之初步檢查

Preliminary Geotechnical Examination of Dams and Tunnels in Chi-Chi Earthquake

張吉佐(Chi-Tso Chang) ； 張森源(Sen-Yuan Chang)

《地工技術》 77期 (2000/02) Pp. 101-108

https://doi.org/10.30140/SG.200002.0007

摘要

集集大地震是台灣百年來震央位於陸上之最大地震。在震央距離50km範圍內，有若干大型壩工及隧道受到極大的搖動。經檢視這些結構物的震後情形發現，除石岡壩受地表斷裂帶穿過造成較大之破壞外，其餘壩工並無明顯之損害。隧道部份，較嚴重之損害則僅發生於因地表錯動而斷裂的石岡壩引水隧道。整體而言，我國壩工技術已在本次地震通過嚴格的考驗，而隧道的耐震性能在本次地震亦獲得再次的驗證。

關鍵字

集集大地震 ； 壩工 ； 隧道

並列摘要

The Chi-Chi earthquake was the most violent one among those earthquakes occurred on land during this century. Many large dams and tunnels located within 50 km circle of the epicenter were shaked by violent ground tremble. After careful inspection of those structures, no significant damages except Shikang dam whose vertical alignment was abruptly changed by differential ground uplifts. As for tunnels, only the outlet tunnel of Shikang dam collapsed due to ground offset. From overall review, current geotechnique for dams in Taiwan have passed a severe challenge during the earthquake. Incidentally, earthquake resistance characteristics of tunnel has been proven in many tunnels during this earthquake.

並列關鍵字

Chi-Chi earthquake ； dam ； tunnel