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Eco-environmentally Friendly Operational Regulation: an Effective Strategy to Diminish the Tdg Supersaturation of Reservoirs : Volume 18, Issue 3 (28/03/2014)

By Feng, J.

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Book Id: WPLBN0004011044
Format Type: PDF Article :
File Size: Pages 11
Reproduction Date: 2015

Title: Eco-environmentally Friendly Operational Regulation: an Effective Strategy to Diminish the Tdg Supersaturation of Reservoirs : Volume 18, Issue 3 (28/03/2014)  
Author: Feng, J.
Volume: Vol. 18, Issue 3
Language: English
Subject: Science, Hydrology, Earth
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2014
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Shen, X., Liang, R., Li, R., & Feng, J. (2014). Eco-environmentally Friendly Operational Regulation: an Effective Strategy to Diminish the Tdg Supersaturation of Reservoirs : Volume 18, Issue 3 (28/03/2014). Retrieved from http://hawaiilibrary.net/


Description
Description: State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, No. 24 of South Section One, Yihuang Road, Chengdu, 610065, China. The presence of elevated total dissolved gas (TDG) downstream of a spillway may result in an increased incidence of gas bubble disease in fish. Supersaturated TDG is transported and dissipated more slowly in reservoirs than in natural rivers because of a higher water depth and lower turbulence and thus endangers fish. This paper presents the operational regulations concerning the mitigation of the TDG supersaturation impact on fish in the Bala Reservoir on the Zumuzu River. The paper includes the joint operations of the upstream and downstream power stations. A laterally averaged two-dimensional model is employed to simulate the TDG transportation and dissipation in the Bala Reservoir in addition to the hydrodynamics and water temperature. According to a comparison of the simulation results of different operational scenarios, this paper suggests a regulation scheme. With respect to the upstream power station, the adoption of an interval-discharge pattern instead of a continuous-discharge pattern is recommended to minimize the negative effect on the reservoir caused by supersaturated TDG. With respect to the downstream power station, the adoption of a surface tunnel rather than a bottom tunnel is recommended as a release structure. This paper is a reference for the eco-environmentally friendly operation of large and deep reservoirs.

Summary
Eco-environmentally friendly operational regulation: an effective strategy to diminish the TDG supersaturation of reservoirs

Excerpt
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