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本专辑依据大连港附近海域多学科综合调查资料,阐明社会经济、自然条件和水质、生物、底质现状,并按照国家有关标准,对海域环境质量进行了评价。 疏浚物排海和海洋自净研究的核心内容,是其沉降、扩散和输运。根据疏浚物沉降过程实验和数值分析,声学、放射性示踪沙跟踪试验,水动力条件和标识质点拉格朗日漂移数值跟踪试验,以及倾倒对水质影响数值分析等,研究疏浚物倾倒后,在“近场”及“远场”的沉降、扩散和输移特性。为定量预测它的物理归宿、环境影响提供科学依据。进而选定疏浚物倾倒区,並提出海域巯浚污染防治对策,供海洋执法部门强化海洋管理和有关单位倾废使用。 本专辑旨在应用现场调查评价与数值模拟实验相结合的方法,选划疏浚物倾倒区,建立一种适用的模式,为海洋环境保护事业服务。其中,所列各类数据、评价方法、数值分析等,对从事环境保护研究的部门、教学单位及个人,都有一定的参考价值。
Based on the comprehensive multidisciplinary survey data of the sea near Dalian Port, this album clarifies the socio-economic and natural conditions as well as the current status of water quality, biology and sediment quality and evaluates the environmental quality of the sea areas in accordance with the relevant national standards. The core content of dredged material discharge sea and ocean self-purification research is its settlement, diffusion and transport. According to the dredging sedimentation process and numerical analysis, acoustic, radioactive tracer sand tracking test, hydrodynamic conditions and the Marker Lagrange drift numerical tracking test, as well as dumping on the impact of water quality numerical analysis, the dredged material after dumping, in the Subsidence, diffusion and transport characteristics of “near field” and “far field”. It provides a scientific basis for quantitative prediction of its physical homeostasis and environmental impact. Dredged material dumping area is selected, and measures for prevention and control of sulfitation dredging in the sea area are proposed for marine law enforcement departments to strengthen ocean management and waste disposal by relevant units. The purpose of this album is to use the method of on-the-spot investigation and evaluation combined with numerical simulation experiments to select the dumping area of dredged materials and establish a suitable model for marine environmental protection. Among them, listed all kinds of data, evaluation methods, numerical analysis, engaged in environmental protection research departments, teaching units and individuals, have some reference value.