水力帷幕防治海水入侵的数值模拟研究  

Simulation of seawater intrusion with hydraulic barrier control

作　　者：高学平[1] 杨建华[1] 涂向阳[1] 张明星[1] 

机构地区：[1]天津大学建工学院,天津300072

出　　处：《环境污染与防治》2006年第11期872-875,共4页Environmental Pollution & Control

摘　　要：为比较应用于防治海水入侵工程的水力帷幕效果,利用垂向二维非均质流体的对流-弥散模型,运用伽辽金有限元法求解,并用物理实验结果验证其有效性。将模型应用于模拟广西北海市海城区海水入侵过程及水力帷幕防治海水入侵效果,分别计算了超采地下水、抽水、注水和抽-注水情况下咸淡水界面随时间推移过程,并分析咸淡水界面推移与抽、注水流量及抽、注水孔位置之间关系,通过比较得出注水是北海市防治海水入侵较为理想的措施。A two-dimenslonal non uniform convection-dispersion model was employed to describe seawater intrusion. The model was solved using the Galerkin finite element method, and its validity was verified by experiment results. Simulation of the salt-fresh water interface migration in the Haieheng area （Beihai City, Guangxi） was performed for the cases of excessive groundwater extraction without control and when control measures using hydraulic barrier by extraction, injection, and extractlon-injection were employed. Considering the effects of the extraction-injection flux and the well location on the interface migration, the hydraulic barrier by injection was the most effective measure for controlling seawater intrusion.

关 键 词：海水入侵 防治措施 数值模拟 水力帷幕 

分 类 号：X145[环境科学与工程—环境科学]