General Introduction
Presidents and Academicians
Dam Safety Management Center of MWR
Waterlocks Safety Management Center of MWR
Research Center for Climate Change of MWR
Engineering Quality Inspection Center of MWR
Hydrology and Water Resources Department
Hydraulic Engineering Department
River and Harbor Engineering Department
Geotechnical Engineering Department
Materials and Structural Engineering Department
Dam Safety Management Department
Center of Eco-Environmental Research
Research Center for Rural Water Management
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering
Key Laboratory of Port, Waterway and Sedimentation Engineering of Ministry of Transport
Key Laboratory of Water Science and Hydraulic Engineering of MWR
Key Laboratory of Failure Mechanism and Safety Control Techniques of Earth-rock Dam of MWR
R&D Center of Hydro-Power Engineering Safety and Environmental Technology of NEA
International Joint Research Center of Water Science & Engineering
Research Center on Hydrology and Water Resources Engineering of MWR
Tiexinqiao Water Experiment Center
Chuzhou Water Experiment Center
Dangtu Water Experiment Center
River and Lake Research Center at Wuxi
Series Report 3 from Flood Control Front: NHRI Experts Provide Strong Science and Technology Support for Flood Control in Nanjing
Post Time:2020-07-23Front:[ Large Medium Small ]

Real-time Monitoring of Flood Wall of the Yangtze River

Discussion on Seepage Treatment Scheme of Dam Downstream Slope

Dike Seepage and Leakage Analysis of the Nanhe River

Technician Debugs Side-scan Radar Flow Measurement System in the Rain at Dongshan Hydrological Station

Affected by the inflow from the upstream Yangtze River, astronomical tide and local heavy precipitation, water level at hydrological stations in Nanjing reached 10.27 m and 10.31 m, respectively, during July 18-19, 2020, surpassing the highest water level on records. The first-level flood control emergency response was initiated recently in Nanjing due to the severe flood control situation.

Heavy precipitation and high water level have resulted in the successive seepage and leakage in soil dikes and dams. Entrusted by Water Affairs Bureaus of Jiangning District and Yuhuatai District, Nanjing Yangtze River Management Office, and Jiangsu Provincial Hydrology and Water Resources Investigation Bureau, NHRI immediately assigned more than 10 experts to the flood control sites in Nanjing in response to the flooding risks.

On the spots of Jiangning District, Yuhuatai District and the main dike of the Yangtze River, experts from NHRI Materials and Structural Engineering Department, namely Li Jun, JIA Hailei, PAN Wenming et al., together with staff from management agencies, investigated the seepage and leakage locations, analyzed the variation of precipitation and water level, conducted real-time monitoring of deformation and seepage quantity, and primarily identified the seepage and leakage causes, providing technical support for studying and judging the flooding risks. Besides the emergency disposal scheme, the experts also put forward reasonable suggestions to thoroughly investigate the causes of seepage and leakage by comprehensive geophysical methods in the later stage according to the site conditions, providing technical support for risk removal and reinforcement to be executed by the management agencies.

At the Dongshan Hydrological Station in Jiangning District, 7 NHRI experts and technicians, such as TANG Wei, CHEN Zhifeng, ZHENG Hong, KAI Feng, installed a side-scan radar flow measurement system on the platform of a water level well booth in the rain. After emergent debugging, data of velocity, flow and water level were transmitted to the hydrological data receiving platform in real time, providing the first-hand data for flood control and reporting.

Experts and technicians from NHRI Geotechnical Engineering Department, such as FANG Xushun, YAN Zhikun, OU Xingyu, conducted the Yangtze River dikes monitoring on the south bank of the Longtan River-Crossing Passage, the north bank of the Xianxinlu River-Crossing Passage, the Baguazhou section of the north bank of the Heyanlu River-Crossing Passage, and the dike monitoring of the upstream section of the Dahua Shoal in the Shuiyang River, a tributary at the south bank of the Yangtze River. Risky situations through monitoring were promptly reported to river management offices, and current dangers were effectively disposed in time.

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