Simulation and Monitoring of Flow Discharge and Sediment Concentration in Tamsui River Basin( III )

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Project title

Code/計畫編號

MOST106-2119-M002-021

Translated Name/計畫中文名

淡水河流域水砂運移機制分析模擬及監測( III )

Funding Organization/主管機關

National Science and Technology Council

Co-Investigator(s)/共同執行人

賴進松
韓仁毓
李豐佐
楊智傑
林詠彬
林錫慶
張文鎰
郭文達
柳文成

Department/Unit

Hydrotech Research Institute, National Taiwan University

Website

https://www.grb.gov.tw/search/planDetail?id=12085247

Year

2017

Start date/計畫起

01-01-2017

Expected Completion/計畫迄

31-12-2017

Co-Investigator(s)

Yu-Jia Chiu

Bugetid/研究經費

1933千元

ResearchField/研究領域

防災工程

本研究課題目的為水砂運移機制分析模擬及監測，研究區域為淡水河流域，並針對淡水河流域上、中、下游進行全流域研究，研究內容涵蓋水砂監測現況調查，以及過去在該流域水砂運移研究資料收整，以及崩塌土方推估，整體期程自104 年至106 年共三年。淡水河流域於102 年石門水庫電廠改建排砂隧道啟用，歷經102 年蘇力颱風、潭美颱風、104 年蘇迪勒、杜鵑颱風及105 年梅姬颱風之排砂操作，再者石門水庫阿姆坪防淤隧道興建工程已於103 年度經行政院核定執行，上述兩項水庫防淤工程雖然可使石門水庫有效減緩淤積速率，然其排砂後對於下游河道影響更需進一步持續監測與評估之必要。因此本研究擬以淡水河為研究區域，研究內容主要係利用已監測或收集之水砂資訊，針對石門水庫、翡翠水庫及基隆河員山子分洪(第三年度工作重點)進行集水區之崩塌土方與水砂運移量進行評估，以及石門水庫及翡翠水庫庫區之入出庫泥砂與泥砂運移進行分析，以及建立淡水河下游河道之水砂運移量及水砂運移模式；此外，結合國家地震中心正研發之底床沖刷技術、颱洪中心以表面流速推估流量之方法、以及自行研發或商用之一、二維河道沖淤模式，最後本計畫將配合國研院國網中心的災害管理資訊研發應用平台，介接整合流域水砂即時監測資料與水砂模式應用建置，完整呈現上述數值模式與監測成果，並於106 年完成淡水河全流域水砂運移機制分析模式介接，故可達成本研究之目的與豐碩之成果。 The research issue is water resources management, water and sediment transport mechanism of simulation and monitoring. Research project is simulation and monitoring of water and sediment transport mechanism in a watershed. Study area is decided in Tamsui River basin. Project duration is from 2015 to 2017. Study contents in this three years include data collection of water and sediment monitoring in Tamsui river basin. Relative simulation reports of water and sediment transport are also collected. Based on collection data of monitoring and simulation, the area of research field and monitoring numbers are integrated. In addition, landsides area, sediment yield, sediment and water transport models are investigated and established in this research. One of the two penstocks at the powerhouse was modified and completed in 2012. It was operated for the first time during Typhoon Soulik in 2013, Typhoon Trami in 2013, Typhoon Soudelor in 2015 and Typhoon Dujuan in 2015, Typhoon Megi in 2016 to release abundant sediments to the downstream river. Furthermore, the construction project of A-mu-ping desilting tunnel was through the implementation from 2014. These two desiltation works can effectively slow down the sedimentation rate of Shihmen Reservoir. However, releasing sediment from Shihmen reservoir is necessary to further continuous monitoring and evaluation of the impact to the river downstream. Therefore, this study intends to select Tamsui river basin as the study area. The entire research schedule is 3 year. The flood control and sediment releasing of Shihmen Reservoir, the flood control of Feitsui reservoir and flood diversion operation of Yuanshanzi Flood Diversion Work will be included in this research. This research apply collected data of water and sediment in Tamsui river basin, the landslide areas, sediment yield, water and sediment transport mechanism and model simulation are integrated and investigated. In addition, combined with the positive development of river bed erosion and deposition monitoring technique of the National Center for Research on Earthquake Engineering are cooperated in this research. Integrated with flood discharge estimation using surface velocity entropy methods of Taiwan Typhoon and Flood Research Institute, one-dimensional and two-dimensional water and sediment transport mode of self-developed and commercial software are also adapted to analysis flow pattern and sediment movement. Finally, the display platform of National Center for High-Performance Computing is adapted to present above simulation results and monitoring data. The display platform provide friendly frame for users to setup numerical model. Bed variation, sediment concentration and main hydraulic parameters of simulation results can display in the same window. Then, the purpose of this research project can be achieved fruitfully.

Keyword(s)

水砂運移
水砂監測
數值模式
應用平台
模式介接
water and sediment transport
measurement and monitoring
numerical model
display platform
modeling combination

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Simulation and Monitoring of Flow Discharge and Sediment Concentration in Tamsui River Basin( III )

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