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eISSN: 2083-5906
ISSN: 1230-1485
ISSN: 1230-1485
ORIGINAL RESEARCH
Study on Hydraulic Regulation of a Tidal Plain
River Network Based on Gate-Pump
Joint Operation
1
Zhejiang Institute of Hydraulics and Estuary (Zhejiang Institute of Marine Planning and Design),
Hangzhou, Zhejiang, China
2
Zhejiang Key Laboratory of River-Lake Water Network Health Restoration, Hangzhou, Zhejiang, China
3
Zhejiang University of Water Resources and Electric Power, Hangzhou, Zhejiang, China
Submission date: 2026-02-26
Final revision date: 2026-07-03
Acceptance date: 2026-07-12
Online publication date: 2026-11-03
Corresponding author
Keke Hu
River and Lake Research Institute, Zhejiang Institute of Hydraulics and Estuary (Zhejiang Institute of Marine Planning and Design), Pengbu Street, 310020, Hangzhou, China
River and Lake Research Institute, Zhejiang Institute of Hydraulics and Estuary (Zhejiang Institute of Marine Planning and Design), Pengbu Street, 310020, Hangzhou, China
KEYWORDS
TOPICS
ABSTRACT
Tidal plain river networks are often characterized by weak hydrodynamic conditions and limited
self-purification capacity. In this study, a one-dimensional hydrodynamic-water quality model for the
Haishu District of Ningbo City, China, was constructed using the self-developed software, the Drainage
Water Modeling System (DWMS). To expand the spatial reach of water diversion, enhance river
network fluidity, and improve water quality, this study systematically investigates the water diversion
effects under different gate-pump joint operation modes using the verified model and introducing
the concept of conservative substance. The simulation results show that, for tidal plain river networks
with pollution sources along the rivers, the “pre-discharge then diversion” mode is the optimal
operational scheme compared with the “simultaneous diversion and discharge” mode. This approach
can increase the water renewal efficiency at the terminal river reach by 13% to 20%.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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| eISSN: | 2083-5906 |
| ISSN: | 1230-1485 |
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