Hydrogeochemical Reactions and Hydrogeological Model for Sea Water Intrusion Processes in the Daweijia Water Source Area, Dalian City

详细信息   

• 责任者：Zhao Changrong (Tianjin Institute of Geology and Mineral Resources ; Tianjin 300170 ; China) ; Yang Jilong
• 刊名：Geological Survey and Research
• 出版年：2012
• 卷期：35(2)
• 关键词：海水入侵 ; sea water encroachment ; 水文地球化学 ; hydrogeochemistry ; 辽宁 ; Liaoning Province
• 页码：p.154-160
• 图表：3 illus., 5 tables, 19 refs.
• 分类号：1800
• issnNo：ISSN1672-4135
• isbnNo：CN12-1353/P

摘要

The Daweijia wellhead field is located at the coastal karst area in North China. Unsustainable groundwater exploitation in recent decades has found severe seawater intrusion in this area. The results suggest that brackish and saline groundwater is not a simple mixture between seawater and fresh groundwater. Inverse hydrogeochemical model can be used to reveal the main hydrogeochemical reactions controlling the hydro-chemical evolution of coastal karst aquifers in the study area, including the dissolution of calcite, montmorillonite and gypsum, the precipitation of illite and Ca-Na cation exchange with CO₂ extrication and there is no dolomitization in this zone.