新永春隧道高壓巨量湧水災害處理之檢討

Review Solve Measures about the New Yung-Chung Tunnel High Pressure Water Ingress Problem

傅子仁(Robert Fu) ； 薛文城(Wen-Cheng Hsueh)

《地工技術》 99期 (2004/03) Pp. 63-72

https://doi.org/10.30140/SG.200403.0006

摘要

新永春隧道於87年10月發生國內外隧道工程罕見之持續巨量高壓湧水災害，檢討處理過程中，在專案處理工程團隊通力合作，掌握處理流程隨時修正後續之因應措施，始決定下階段因應方案，充分發揮決策彈性處理機制，並引進熱瀝青灌漿工法等技術克服困難，是為處理成功圓滿之主要因素。更以謙卑以對的態度，學習瞭解大地，在互信與共同努力下，終能圓滿達成任務。

關鍵字

隧道 ； 高壓湧水 ； 水平長距離鑽探 ； 熱瀝青灌漿

並列摘要

In October 1998, during the excavation of New Yung-Chung Tunnel, massive and high-pressured water ingress occurred at the south portal workface. The project has been successfully completed and the measures as implemented for this long-lasting water ingress problem are reviewed and discussed herein. During the remedy work, the task force modified the procedures or methodologies based upon the newly obtained supplemental geologic data and the results of the previous treatment steps. The conducted hot bitumen grouting program, first time in Taiwan, has reduced the hydraulic conductivity of the surrounding formation which is the key point to make the tunnel excavation through the water bearing zone. The team members with humble attitude modified the design corresponding to the changes of the ground conditions and, under mutual trust and well cooperation, completed the most difficult mission at last.

並列關鍵字

tunnel ； high hydrostatic water ingress ； long distance horizontal drill ； hot bitumen grouting