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Analysis of hydrological changes in the main stream of Chishui River before and after hydropower construction
Based on flow data from the Luodian River Hydrological Station, the RVA analysis method was first used to measure the degree of hydrological change of the five groups of indicators in the IHA index system. The improved RVA method combined with the Nemerow index was then used to calculate the overall degree of hydrological change and the comprehensive degree of hydrological change of each indicator group. The study found that the overall degree of hydrological change of the main channel of the Chishui River was low. Except for the frequency and duration of high and low flows, which were moderately changed, the other four index groups were all low-level changes. Most of the hydrological index changes were low-level, there are no high-level changing indicators; after the establishment of Yudong Hydropower Station, the discharge tends to be uniform, the frequency and duration of high and low flows and the annual extreme flow index group have relatively large changes, the rate and frequency of flow conditions rate and frequency of water condition changes have decreased, low flow occurs significantly earlier.
Analysis of hydrological changes in the main stream of Chishui River before and after hydropower construction
Based on flow data from the Luodian River Hydrological Station, the RVA analysis method was first used to measure the degree of hydrological change of the five groups of indicators in the IHA index system. The improved RVA method combined with the Nemerow index was then used to calculate the overall degree of hydrological change and the comprehensive degree of hydrological change of each indicator group. The study found that the overall degree of hydrological change of the main channel of the Chishui River was low. Except for the frequency and duration of high and low flows, which were moderately changed, the other four index groups were all low-level changes. Most of the hydrological index changes were low-level, there are no high-level changing indicators; after the establishment of Yudong Hydropower Station, the discharge tends to be uniform, the frequency and duration of high and low flows and the annual extreme flow index group have relatively large changes, the rate and frequency of flow conditions rate and frequency of water condition changes have decreased, low flow occurs significantly earlier.
Analysis of hydrological changes in the main stream of Chishui River before and after hydropower construction
Advances in Engineering res
Li, Dayong (editor) / Zhang, Yu (editor) / Luan, Yalin (editor) / Wang, Wentong (author) / Zhang, Jing (author) / Wang, Qi (author) / Zhao, Jinyong (author)
International Conference on Architectural, Civil and Hydraulic Engineering ; 2023 ; Qingdao, China
2023-12-28
8 pages
Article/Chapter (Book)
Electronic Resource
English
| DOAJ | 2022