环渤海典型地段海(咸)水入侵研究现状及方法探讨

Research status and Discussion on the Method of Seawater Intrusion in the Key Section of Circum-Bohai-Sea Region

通过对大连大魏家、秦皇岛枣园和莱州湾南岸海水入侵的调查,结合已有研究成果和方法,笔者总结和梳理了环渤海地区海水入侵研究现状及存在的问题,并探讨了海水入侵调查研究技术方法。多年来对环渤海地区海水入侵的调查研究工作,基本查清了不同地段、不同类型海水入侵的机理和动态变化趋势,并为海水入侵有效防治提供了科学依据。随着海水入侵问题研究的深入,发现在水文地质条件、地下水动态监测及海水入侵对生态环境影响等方面仍存在问题,应持续加强海水入侵监测与研究。海水入侵调查研究是一项涉及多学科的综合性技术,应从基础调查,综合分析、动态监测和数值模拟等多方面开展研究。综合运用水化学分析、同位素示踪、室内模拟试验等技术方法,在充分揭示海水入侵机理和过渡带溶质运移规律的基础上,实现对海水入侵变化趋势的预测预报,提高对海水入侵的防范意识。

By investigation and research of seawater intrusion in Daweijia of Dalian city,Zaoyuan of Qinhuangdao city and south coast of Laizhou Bay,combing with existing research achievement and methods,this study summarized and combed the research status and existing problems and analyzed investgation and research methods of seawater intrusion. Investigation and research work for the past many years in Circum-Bohai-Sea Region cleared up basically the mechanism and dynamic change trend of seawater intrusion of different location and types and provided scientific basis for seawater intrusion prevention.With the deepening of research on seawater intrusion problems,there are still problems discovered in hydrogeologic conditions,hydrodynamic monitoring and eco-environmental influence of seawater intrusion,and seawater intrusion should continue to strengthen monitoring and research. Investigation and research of seawater intrusion is a multidisciplinary integrated technology,including fundamental research,comprehensive analysis,hydrodynamic monitoring and numerical simulation redearch,etc.Hydrochemical analysis,isotope tracer technique and laboratory simulation test,etc can be used to reveal the mechanism of seawater intrusion and the solute transport law of transition zone. Based on above research,it can make a prediction of sea intrusion and improve prevention awareness.