潍坊北部海咸水入侵特征及现状评价

潍坊北部是我国典型的海咸水入侵区,通过资料收集、海咸水入侵专项调查、地质环境监测与实验、样品分析测试和室内综合分析研究,基本查清了海咸水入侵发展及演化历史。工作区海咸水入侵发展过程可划分为发生和发展、快速发展、慢速发展和稳定发展4个阶段,目前处于稳定发展期。利用2012年水质测试结果,选取Cl-、矿化度、SO2-4,rHCO-3/rCl-,K+等指标作为评价因子,运用模糊数学的方法,对潍坊北部海(咸)水入侵区入侵程度的现状做出综合评价;结合工作区海咸水入侵的特征和现状,针对性地提出了今后的防治重点和对策。

Characteristics and Evaluation of Present Condition of Sea Salt Water Intrusion in Northern Weifang City

Northern Weifang city is near the southern coastal area of Laizhou city. It is a typical sea salt water intrusion area in China. In this paper, present condition the mechanism of sea salt water intrusion in northern Weifang city have been studied. Through data collection, special investigation of sea salt water intrusion, geological environmental monitoring and testing, the sample analysis test and indoor analysis, development and evolution history of salt water intrusion have been found out. Sea salt water intrusion development process in this area can be divided into 4 stages: the occurrence and development stage, rapid development stage, slow development stage and stable development stage. At present it is in the stable development stage. By using the test result of water quality in 2012, choosing Cl, salinity, SO24, rHCO3/rCland K+ as evaluation factors, using the method of fuzzy mathematics, present conditon of sea (salty) water intrusion in northern Weifang city has been evaluated comprehensively. Combining with the characteristics and present condition of sea salt water intrusion in work area, countermeasures for preventing sea salt water intrusion in the future have been put forward.