圖書典藏及影音數位平台

為瞭解曾文水庫入出庫泥砂運移行為，並客觀推估颱洪事件後之入出庫泥砂總量，本局自100年度起至今，己於曾文水庫庫區建置8座自動泥沙濃度觀測站，可於颱風豪雨期間即時量測及蒐集不同斷面、不同深度之泥砂濃度資料，並由測得資料進一步分析研判異重流是否發生，及預測異重流運移至壩前時間，提供水庫排砂操作之重要參考。 目前已建置8座測站分別建置於（1）庫區上游站A14斷面(非汛期移至A10斷面)、（2）庫區中游一站A7斷面右岸、（3）庫區中游二站A7斷面左岸、（4）觀景樓站A2斷面、（5）防淤隧道入口站A1斷面、（6）取水斜塔站、（7）溢洪道站、（8）一號導水隧道出口站等。並預計於106年底配合防淤隧道竣工，將於防淤隧道出口建置第9座測站。自100年度起曾文水庫集水區已歷經至少20場颱風豪雨事件，此8座測站均能發揮自動泥砂濃度監測及資料傳輸功能，有助瞭解及掌握入出庫泥砂量即時資訊。曾文水庫目前正積極執行各項排砂清淤工事，包括取水斜塔前庭清淤工程、PRO排砂閘門改建為射流閘門、及新建防淤隧道(預計106年底完工)等，均有賴本自動化測站來提供正確且即時之泥砂濃度監測數據，除由庫區各斷面濃度變化研判異重流發生後之適當排砂時機，並得精確估算放流後之實際排砂總量。 爰此，為確保既有8座測站及預計第9座測站防淤隧道出口站得以繼續正常運作，各測站之定期維護、保養及率定等工作不容間斷，始得於各期間發揮其自動量測、資料蒐集及即時傳輸等功能，藉由進一步之分析，期精準把握各放流口適當排砂時機，提升整體水力排砂之成效。

In order to further understand the transportation of sediment from Zengwen reservoir and estimate the total amount of sediment entering and exiting the reservoir. So far in Zengwen reservoir area has built 9 automatic sediment concentration stations. To ensure that these eight automated stations to continue operation normally, the regular maintenance and calibration work must not be interrupted. In this way, it can demonstrate the functions of automatic measurement, data collection and real-time transmission during the period of Typhoon. The main work items for the project has been completed this year that include: (1) maintenance and calibration of sediment concentration monitoring systems; (2) observation and analysis data of the typhoon incidents; (3) review the effectiveness of existing 9 stations; and (4) according to the contract to present all the reports. This year has been completed as required, 10 times the equipment maintenance and 4 times calibration of equipment. According to the standard procedures, the observing unit, transmission unit, power system and display system at each station should be properly maintained and calibrated each time to ensure that the system operates correctly. During the typhoon season of this year, four stationing and observation operations were conducted. During the 0823 extremely heavy rain event, the reservoirs discharged more than 280,000 tons of slurry and were judged as light density flows. It’s the largest single slurry discharge event this year. This year also completed the initial report, two interim reports and final reports, and is expected to complete the results report on December.