Using Multi-scale Sediment Monitoring Techniques to Evaluate Remediation Effectiveness of the Tsengwen Reservoir Watershed after Sediment Disasters Induced by Typhoon Morakot

被引：0

作者：

Lin, B. -S. ^{[1
]}

Ho, H. -C. ^{[1
]}

Hsiao, C. -Y. ^{[1
]}

Keck, J. ^{[1
]}

Chen, C. -Y. ^{[1
]}

Chi, S. -Y. ^{[1
]}

Chien, Y. -D. ^{[2
]}

Tsai, M. -F. ^{[2
]}

机构：

[1] Sinotech Engn Consultants, Disaster Prevent Technol Res Ctr, Taipei, Taiwan

[2] Council Agr, Soil & Water Conservat Bur, Taipei, Taiwan

来源：

CHALLENGES AND INNOVATIONS IN GEOTECHNICS: PROCEEDINGS OF THE 18TH INTERNATIONAL CONFERENCE ON SOIL MECHANICS AND GEOTECHNICAL ENGINEERING, VOL 1 | 2013年

关键词：

Tsengwen reservoir watershed; typhoon Morakot; sediment disasters; remediation effectiveness;

D O I：

暂无

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The 2009 typhoon Morakot dumped more than 3,005 mm of rain in mountain areas of the Tsengwen reservoir watershed and caused unprecedented landslide and sediment-related disasters. Subsequently, the storage capacity of the Tsengwen reservoir was drastically reduced. In order to increase the longevity of the reservoir and also protect ecosystems and the peoples living in the upper portions of the watershed, the Taiwan Executive Yuan implemented the "Tsengwen, Nanhua, Wushantou Reservoir Remediation and Water Resources Protection Act". This study aims to use multi-scale sediment monitoring techniques including field investigations and multi-stage remote sensing data to identify sediment migration patterns associated with remediated areas of the Tsengwen reservoir watershed after typhoon Morakot and to guarantee the effectiveness of remediation efforts. A case study of the Longjiao creek in Tsengwen Reservoir watershed shows that remediation works can not only reduced sediment production due to erosion and landslides, but future sediment production will also be suppressed. The reduction of sediments carried by the Tsengwen river will also lead to an increase in the service life of the Tsengwen reservoir.

引用

页码：571 / 574

页数：4

共 7 条

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