Simulation and Monitoring of Flow Discharge and Sediment Concentration in Tamsui River Basin-3

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Project title

Code/計畫編號

MOST104-2119-M002-009

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

Funding Organization/主管機關

National Science and Technology Council

Co-Investigator(s)/共同執行人

賴進松
林錫慶
楊智傑
柳文成
郭文達
林詠彬

Department/Unit

Hydrotech Research Institute, National Taiwan University

Website

https://www.grb.gov.tw/search/planDetail?id=11267119

Year

2015

Start date/計畫起

01-01-2015

Expected Completion/計畫迄

31-12-2015

Co-Investigator(s)

Yu-Jia Chiu

Bugetid/研究經費

1790千元

ResearchField/研究領域

土木水利工程

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、整合監測規劃的範圍、空間與監測數量，以及崩塌土方推估、流域水砂運移量分析、水砂運移模式之建立。淡水河流域於102年石門水庫電廠改建排砂隧道啟用，歷經去年蘇力颱風及潭美颱風之排砂操作，再者石門水庫阿姆坪及大灣坪防淤隧道興建工程已於今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，分三年進行。利用已監測或收集之水砂資訊，針對石門水庫及翡翠水庫集水區之崩塌土方與水砂運移量進行評估、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，可支援擴充該平台目前所缺少水砂運移模擬分析的部分，完整呈現上述數值模式與監測成果，故可達成本研究之目的與豐碩之成果。 The objective of this research issue is related to water and sediment transport mechanism by adopting numerical simulation and field monitoring. The project focuses on sediment yield from watershed of the reservoir and sediment transport mechanism in its downstream river. The study area is chosen in the Tamsui River basin. Study contents include data collection of water and sediment monitoring data in the basin. Related reports of water and sediment transport measurements are also collected. Based on collection data of monitoring and simulation, the areas of research field and monitoring locations are inspected and integrated. In addition, landsides areas, sediment yield, sediment and water transport analysis are investigated and established in this research. Since 2013 year, the sediment venting tunnel of Shihmen reservoir was constructed by modifying the power plant outlet. It was successfully operated in Soulik Typhoon and Trami typhoon. Furthermore, the construction project of A-mu-ping desilting tunnel has been approved in July this year. These two desiltation works can effectively slow down the sedimentation rate of Shihmen Reservoir. However, releasing sediment from Shihmen reservoir is necessary for further continuous monitoring and evaluation of the impact to the river downstream. Therefore, this 3-year study intends to select the Tamsui river basin as the demonstrative study area. Using 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 techniques implemented by the National Center for Research on Earthquake Engineering, flood discharge estimation using surface velocity entropy methods and two-dimensional water and sediment transport mode by the Taiwan Typhoon and Flood Research Institute are cooperated in this research. Finally, the display platform developed by National Center for High-Performance Computing is adapted to present above simulation results and monitoring data. This proposed research project is expected to be achieved fruitfully.

Keyword(s)

水砂運移
數值模擬與監測
土砂產量
water and sediment transport
simulation and monitoring
sediment yield

DSpace CRIS

Simulation and Monitoring of Flow Discharge and Sediment Concentration in Tamsui River Basin-3

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