圖書典藏及影音數位平台

曾文水庫位於嘉義縣曾文溪主流柳籐潭上游，為一多目標水庫，於民國56年10月31日開工，歷時六載於民國62年10月31日完工，自開始蓄水營運至今已達40年，期間除提供嘉南平原地區農業、工業及民生用水外，並充份發揮其防洪、發電及觀光之功能。 為確保本水庫蓄水及營運期間壩體之安全及穩定，以提供水庫下游民眾生命財產之安全保證，長期以來本水庫即利用大壩埋設之儀器及設備，於水庫營運期間持續辦理監測，並對大壩進行定期或不定期安全檢查，以維本水庫營運期間之壩體安全性。 由於土石壩安全監測儀器及設備資料，研判分析的工作涉及土木、大地、水利、地質、電氣、儀器系統、風險管理等多項專長的結合，屬特殊的專長領域。且目前本局人力資源現況亦難以負擔本項工作的執行，亟需要專業工程師協助辦理安全監測相關業務及監測資料判讀分析工作。

This project is a routine surveillance work of Tsengwen dam for dam safety during 2014. It has been entrusted by Southern Region Water Resources Office, WRA, MOEA (WRASB), owner of Tsengwen dam, and it was executed by Sinotech engineering Consultants, Ltd. (a.k.a. Sinotech). This routine surveillance monitors dam facilities and pre-installed instruments to ensure normal operation and reservoir safety. Work Includes: 1. monitoring and analyzing data for dam safety; 2. in-situ facilities safety inspection; 3. assessment of dam behavior and safety; 4. inspection and review of monitoring instrumentation; 5. technical advisory; 6. results reports; 7. technical training. According to the results of inspection and data from monitored instruments for this project, no obviously unusual behavior has been found in this year. The structure condition of spillway is well: no deformation, settlement, or over uplift force has been found by monitoring and inspection. The right side slope of spillway has no obvious deformation, surface erosion, or unusual ground water raise. Observed defects are either minor or existing but not in progress. In short, there is no safety threat found from the surveillance in Tsengwen dam this year. However, the pressure measurement system of twin-tube hydraulic piezometers inside dambody and toe area has been partially failed by Typhoon Morakot in 2009. Loss of piezometer reading causes information shortage of seepage behavior in dam. It is recommended to repair the pressure measurement system of twin-tube hydraulic piezometers. The other malfunction instruments with low value can be decommissioned.