圖書典藏及影音數位平台

南水局刻正辦理「曾文水庫抽泥作業第三期」勞務採購案，為配合該作業及因應「曾文水庫防淤隧道工程」、「曾文水庫永久河道放水道」之水力排砂操作，將持續辦理水庫清淤及河道放淤工作，故仍需延續辦理水庫放淤監測及放淤後對下游河道水質、生態、河防安全、海岸之影響與評估，以掌握下游河道的影響變遷情形，爰成立本計畫。

To resolve the sedimentation problems caused by Typhoon Morakot of 2009, several desilting projects have been planning and executing for Zengwen Reservoir, including the desilting tunnel for hydraulic flushing. This project proceeded various investigation and analysis tasks for future operation of the flushing tunnel on its influences of returning sediment to the downstream channel transition. For this three-year project spanning from 2019 to 2021, research team will focus on several topics, including basic information collection, channel topographical survey, sediment sampling and test at estuary and channel, monitoring and analysis of estuary and channel transition, numerical simulation of sedimentation at estuary and channel, investigation, impact analysis, and evaluation of water quality and ecological monitoring, and proposing protection measures for potential influenced estuary and channel. Besides, result briefing meetings and documentation of project update reports are also the requirements for the project. The outcomes of these research topics are concluded in following sections.