Investigation of saltwater intrusion in thach han river system by mike hydro river package

  • Vuong Tai Chi

    Thuyloi University, 175 Tay Son, Dong Da, Hanoi, Vietnam

  • Nguyen Khanh Linh

    Thuyloi University, 175 Tay Son, Dong Da, Hanoi, Vietnam

  • Vu Huong Ngan

    International Center of Tropical Agriculture, Pham Van Dong, Hanoi, Vietnam

  • Dinh Nhat Quang

    Thuyloi University, 175 Tay Son, Dong Da, Hanoi, Vietnam

  • Truong Van Anh

    Hanoi University of Natural Resources and Environment, Hanoi, Vietnam
DOI: https://doi.org/10.47869/tcsj.72.1.6
Email: quang.dinh@tlu.edu.vn
Từ khóa: Saltwater intrusion, Thach Han river system, MIKE HYDRO River package.

Tóm tắt

Saltwater intrusion is one of the most severe problems for worldwide coastal regions, leading to negative impacts on both human and aquatic inhabitant communities. Quang Tri province, located in the Central Coast region of Vietnam, faces consequences of saltwater intrusion because of its dense river network and El Nino phenomena’s influences. To analyse hydrological, hydraulic processes as well as investigate saltwater intrusion’s situation in this province, the authors adopted MIKE HYDRO River package and obtained results with good agreements with measured data from survey campaigns. The present conditions scenario shows that saltwater intrudes Thach Han and Cam Lo rivers with a distance of 25.35 km and 15.04 km respectively, where the salt concentration is under 0.75‰ and water can be drunk and irrigated. The large discharge of 30 m3/s can only push saltwater only 1.85 km to the sea, which is insignificant in comparison with the value of seawater wedge length, saltwater intrusion in Thach Han river system can only be mitigated slightly. Since the authors only consider hydrological droughts, future scenarios in 2030 and 2050 have slight differences with the present, where topography and river flow remain unchanged. Based on the above results, non-structural measurements are not recommended to deal with saltwater intrusion for both present and future scenarios, and local authorities should consider structural solutions, e.g. constructions of anti-salt dams, during the decision-making process.

Tài liệu tham khảo

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[6] VnExpress, El Nino looms large in 2017 with drought and strong typhoons forecast for Vietnam - VnExpress International, VnExpress International - Latest news, business, travel and analysis from Vietnam, 2017. https://e.vnexpress.net/news/news/el-nino-looms-large-in-2017-with-drought-and-strong-typhoons-forecast-for-vietnam-3560262.html
[7] Quang Tri Statistics Office, Quang Tri Statistical Yearbook 2015, 2015.
[8] M. Van Vilsteren, Design flood estimation for the Quang Tri Province in Vietnam, 2010. http://purl.utwente.nl/essays/69461
[9] M. Krutwagen, Impact of shrimp pond wastewater on the estuaries and the issue of salinity intrusion in the Quang Tri Province, 2007. https://essay.utwente.nl/68661/1/Krutwagen-Michiel.pdf
[10] Institute of Water Resources Planning, Water resources planning in Thach Han - O Lau basin - Report on current situation of economic and social development, 2006.
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[12] Saltwater intrusion is beyond 10 km from Dong Ha city, Quang Tri province, 2020. https://nongnghiep.vn/quang-tri-man-xam-nhap-vuot-qua-thanh-pho-dong-ha-10-km-d161746.html

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Investigation of saltwater intrusion in thach han river system by mike hydro river package
Nhận bài
05/10/2020
Nhận bài sửa
30/10/2020
Chấp nhận đăng
06/11/2020
Xuất bản
25/01/2021
Chuyên mục
Công trình khoa học
Kiểu trích dẫn
Vuong Tai, C., Nguyen Khanh, L., Vu Huong, N., Dinh Nhat, Q., & Truong Van, A. (7600). Investigation of saltwater intrusion in thach han river system by mike hydro river package. Tạp Chí Khoa Học Giao Thông Vận Tải, 72(1), 46-57. https://doi.org/10.47869/tcsj.72.1.6
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