REGULATION OPTIMIZATION OF TIDAL RIVER GATES FOR WATER ENVIRONMENT IMPROVEMENT IN THE RIVER BASINS:A CASE STUDY ON INDEPENDENT POLDERS' RIVER NETWORKS

GUO Xinyu; CHENG Shuhui; LI Zhicheng; HE Wei; KOU Xiaoxia; QIAO Xin; WANG Cong

doi:10.13205/j.hjgc.202303007

Volume 41 Issue 3

Mar. 2023

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2023 > 41(3): 49-56

GUO Xinyu, CHENG Shuhui, LI Zhicheng, HE Wei, KOU Xiaoxia, QIAO Xin, WANG Cong. REGULATION OPTIMIZATION OF TIDAL RIVER GATES FOR WATER ENVIRONMENT IMPROVEMENT IN THE RIVER BASINS:A CASE STUDY ON INDEPENDENT POLDERS' RIVER NETWORKS[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(3): 49-56. doi: 10.13205/j.hjgc.202303007

Citation:

GUO Xinyu, CHENG Shuhui, LI Zhicheng, HE Wei, KOU Xiaoxia, QIAO Xin, WANG Cong. REGULATION OPTIMIZATION OF TIDAL RIVER GATES FOR WATER ENVIRONMENT IMPROVEMENT IN THE RIVER BASINS:A CASE STUDY ON INDEPENDENT POLDERS' RIVER NETWORKS[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(3): 49-56. doi: 10.13205/j.hjgc.202303007

Citation:

GUO Xinyu, CHENG Shuhui, LI Zhicheng, HE Wei, KOU Xiaoxia, QIAO Xin, WANG Cong. REGULATION OPTIMIZATION OF TIDAL RIVER GATES FOR WATER ENVIRONMENT IMPROVEMENT IN THE RIVER BASINS:A CASE STUDY ON INDEPENDENT POLDERS' RIVER NETWORKS[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(3): 49-56. doi: 10.13205/j.hjgc.202303007

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REGULATION OPTIMIZATION OF TIDAL RIVER GATES FOR WATER ENVIRONMENT IMPROVEMENT IN THE RIVER BASINS:A CASE STUDY ON INDEPENDENT POLDERS' RIVER NETWORKS

doi: 10.13205/j.hjgc.202303007

1. Beijing Municipal Engineering Design and Research Institute Co., Ltd, Beijing 100082, China;
2. State Key Laboratory of Hydrology, Water Resources and Hydraulic Engineering Science, Hohai University, Nanjing 210098, China

Received Date: 2022-02-21
Available Online: 2023-05-26
Publish Date: 2023-03-01

Abstract

Abstract

This study took five independent polders’ river networks in southern China as the research objects, established a hydrodynamic water quality coupling model according to the characteristics of the tidal reaches, and compared the water quality improvement effects under different gate scheduling strategies. The results showed that: 1) for the polders’ river network, water exchange should be carried out during the spring tide period, and the hydraulic retention time could be shortened by up to 7 hours compared with the neap tide period. Based on the results of the tracer operating condition, for the river network with a short distance between the inlet and outlet gates, the one-way flow scheduling strategy should be used to operate the gate, which could shorten the hydraulic retention time by up to 14.18 hours compared with reciprocal flows. For the river network with a long distance between the inlet and outlet gates, the reciprocal flows operation strategy of opening the gates on both sides to discharge water from the central drainage could shorten the hydraulic retention time by 3.18 hours, compared with the one-way flow scheduling strategy. 2) the results of water quality showed that the deadhead river should be opened up first by water system connection, and then the aforementioned gate scheduling strategy should be adopted. The proportion of the polders’ river network sections whose water quality reached class IV increased by 7.3%. The results of this paper can provide a reference for the improvement of hydrodynamic and water quality for gate scheduling of tidal river networks in different geographical features.
- tidal river,
- gate optimal regulation,
- hydrodynamic-water quality coupling model,
- hydraulic retention time

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References(20)

References

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