Monitoring of Sediment Transport in a Reservoir using Time Domain Reflectometry

被引:0
作者
Chung, Chih-Chung [1 ]
Lin, Chih-Ping [2 ]
Wu, Po-Lin [1 ]
Hsieh, Sheau-Ling [3 ]
Wu, Ching-Hsien [4 ]
机构
[1] Chiao Tung Univ, Disaster Prevent & Water Environm Res Ctr, Hsinchu, Taiwan
[2] Chiao Tung Univ, Dept Civil Engn, Hsinchu, Taiwan
[3] Chiao Tung Univ, Ctr Informat Technol, Hsinchu, Taiwan
[4] Natl Cheng Kung Univ, Dept Hydraul & Ocean Engn, Tainan 70101, Taiwan
来源
PROCEEDINGS OF THE 35TH IAHR WORLD CONGRESS, VOLS I AND II | 2013年
关键词
Density current; Sediment monitoring; Sediment transport; Time domain reflectometry (TDR);
D O I
暂无
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Due to geological weathering and climate change, soil erosion in watershed is becoming a serious problem in Taiwan. Large amount of sediment transports to reservoirs during typhoon events and affects the water quality. Density currents in reservoirs have high sediment concentration. The accumulated sediments have significantly reduced the reservoir capacity. Monitoring of sediment transport in a reservoir plays an important role in reservoir management. The existing techniques for suspended sediment concentration (SSC) monitoring, such as optical and acoustic methods, are sensitive to particle size or limited in measurement range. Furthermore, these techniques may not be cost effective for field monitoring due to the required maintenance and spatial coverage. A new technique based on time domain reflectometry (TDR) was recently introduced. It possesses several advantages including particle-size independence, low-cost transducers, durability, and cost-effective multiplexing. This study modified the TDR technique for better field applicability and demonstrated how it can be deployed as a full monitoring program for reservoir management through a case study in the Shihmen reservoir, Taiwan. Monitoring stations at upstream riverbank and outflow channels were installed with fixed protective structures to provide inflow and outflow sediment-discharge records. To capture the characteristics of density currents, multi-depth monitoring stations were designed and deployed on floats in the reservoir. Some of the data collected during Typhoon Fung-Wong are presented as an example to demonstrate the effectiveness and benefits of the monitoring station.
引用
收藏
页码:6115 / 6127
页数:13
相关论文
共 15 条
[1]  
[Anonymous], 2009, GEOTECHNICAL NEWS
[2]   High concentration suspended sediment measurements using a continuous fiber optic in-stream transmissometer [J].
Campbell, CG ;
Laycak, DT ;
Hoppes, W ;
Tran, NT ;
Shi, FG .
JOURNAL OF HYDROLOGY, 2005, 311 (1-4) :244-253
[3]   High concentration suspended sediment measurements using time domain reflectometry [J].
Chung, Chih-Chung ;
Lin, Chih-Ping .
JOURNAL OF HYDROLOGY, 2011, 401 (1-2) :134-144
[4]  
Garcia M. H., 2008, 110 ASCE
[5]  
GRAY J, 2009, DANCING TIMES, V99, P45, DOI DOI 10.1029/2008WR007063
[6]  
Hsieh S.L., 2012, International Review on Computers and Software, V7, P3238
[7]  
Lewis A. J., 1996, NEW PASSIVE TECHNIQU
[8]   National policy of watershed management and flood mitigation after the 921 Chi-Chi earthquake in Taiwan [J].
Lin, Yong-Jun ;
Chang, Yuan-Hsiou ;
Tan, Yih-Chi ;
Lee, Hong-Yuan ;
Chiu, Yu-Jia .
NATURAL HAZARDS, 2011, 56 (03) :709-731
[9]   Source variability of sediments in the Shihmen Reservoir, Northern Taiwan: Sr isotopic evidence [J].
Liu, Hou-Chun ;
You, Chen-Feng ;
Chung, Chuan-Hsiung ;
Huang, Kuo-Fang ;
Liu, Zhi-Fei .
JOURNAL OF ASIAN EARTH SCIENCES, 2011, 41 (03) :297-306
[10]   TEMPERATURE-DEPENDENT MEASUREMENT ERRORS IN TIME-DOMAIN REFLECTOMETRY DETERMINATIONS OF SOIL-WATER [J].
PEPIN, S ;
LIVINGSTON, NJ ;
HOOK, WR .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1995, 59 (01) :38-43