Abstract
Abstract Oil spill, a frequent pollution in the utilization of rivers, is receiving increasing attention in the study of river ecosystems. Taking the Zhuankou–Yangluo Reach (ZYR) of the Middle Yangtze River as an example, the spatial and temporal behaviors of leaked oil in the river under uniformly arranged piers with varying densities were studied based on a MIKE21 hydrodynamic and oil drift model. The results show that the oil spill spread is less affected by the piers when the upstream oil spill point is located on the other side of the shoreline with piers. However, the influence of the piers on the same shoreline of the oil spill point on oil spill transportation cannot be ignored. The piers significantly reduce the oil spill drift speed in the engineering area, resulting in a significant increase in slick retention time and slick area, especially when the density of piers is greater than 1.25 units/km. These results will provide useful reference for river management, for example, in the upstream river of the water conservation area, especially on the same bank as the water intake, where a large number of piers should not be built.
Highlights
Due to global economic growth, the demand for petroleum products is increasing rapidly, many more oil spill accidents can be expected because of extensive oil exploitation and frequent water transportation (Vethamony et al )
We explore the effect of arranging piers with different densities in the Nianyutao–Xujiapeng Shoreline (NXS) on hydrodynamics and oil spill transport within an idealized Zhuankou–Yangluo Reach (ZYR) to give insight into river oil spill transport with and without piers
The retention time of the slick is counted, and we focus on the analysis of the distribution of oil particles and the change of slick area at the beginning of the oil spill (0.5 h), the time when it spreads to Nianyutao, Hanjiang Estuary, Xujiapeng and Yangluo
Summary
Due to global economic growth, the demand for petroleum products is increasing rapidly, many more oil spill accidents can be expected because of extensive oil exploitation and frequent water transportation (Vethamony et al ). Oil spills pollute the ecological environment and endanger aquatic organisms significantly, often leading to long-term adverse impacts on the environment, ecology. Oil spill simulation in different scenarios can provide emergency plans for the prevention and control of secondary disasters after an accident and help to distinguish high pollution risk areas according to the spill trajectories. Most of the past investigations on the behavior and movement of spilled oil have concentrated on open sea or coastal areas (Cheng et al ; Ventikos & Psaraftis ; Verma et al ).
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