胶莱运河的修建对莱州湾水交换及海洋环境影响初探

为研究莱州湾水交换对胶莱运河修建工程的响应,以及为海洋污染治理问题提供参考,以莱州湾为重点模拟区域建立了二维平面潮流和对流扩散模型,利用渤海、黄海、莱州湾地形及海洋环境资料,结合2018年莱州湾海水水质监测结果,初步分析了胶莱运河的修建对莱州湾海洋环境现状的影响.模拟结果表明,胶莱运河建成后年径流总量约为7.2×109...

A Simulation Study on Influence of the Construction of Jiaolai Canal on the Water Exchange and Marine Environment in the Laizhou Bay

In order to study the response of water exchange in the Laizhou Bay to the construction of Jiaolai Canal and to provide references for the marine pollution control,a two-dimensional plane tidal current and convection diffusion model is established by taking the Laizhou Bay as the key simulation area.Then,the impact of the construction of the Jiaolai Canal on the status of marine environment in the Laizhou Bay is preliminarily analyzed based on the topographic and marine environmental data obtained from the Bohai Sea,the Yellow Sea and the Laizhou Bay and combined with the results from the water quality monitoring carried out in the Laizhou Bay in 2018.The simulated results show that after the Jiaolai Canal is constructed,its total annual runoff is about 7.2×10⁹ m³ and the net flow direction is from the Jiaozhou Bay to the Laizhou Bay.After the project implemented,the water exchange capacity in the whole Laizhou Bay is slightly enhanced,being stronger in the east than in the west,and the half exchange cycle is shortened by 14 days.The sea water of the Yellow Sea enters into the Jiaolai Canal via the Jiaozhou Bay and then is delivered into the Laizhou Bay,which will dilute the non-excellent water in the Laizhou Bay,and then alleviate,to some extent,the status of seawater quality in the small area at the eastern estuary of the Laizhou Bay.