济南泉域岩溶水水质演变趋势研究

The Research into the Evolvement Trend of Karsts Water Quality for Fountain Areas in Jinan

20世纪50年代末期,济南泉域岩溶地下水水质基本处于天然状态。此后,特别是80年代以来,由于社会经济发展的速度逐渐加快,岩溶水开采量不断增加,“三废”排放逐年增加,致使岩溶水水质逐年变差。西郊岩溶水水质变差的主要原因为点状工业污染。市区地处排泄区,受北部岩浆岩岩体阻挡,岩溶水只能以泉或开采的形式排泄;来自补给区的三废排放量的增加造成了部分离子浓度的不断增加。东部面积小,是工业和民用水集中区,地下水水质总体恶化趋势较市区严重,较西部更严重。

In the end of 50′s, underground water quality of fountain areas in Jinan still remains crude state. Since 1980, with the gradually growth of economic development, the continuous exploitation in karsts, the more polluted air, water and materials being released, the water quality of karsts has become worse and worse. The content of all components mainly originates from point industrial pollution. West suburb firstly speaking, the content of all components of karsts had turned from climbing to descending from 1959 to 2002. Secondly the components of fountain in Jinan city areas are ascending in general. The areas are located at the regions of letting out polluted water; the amount of released polluted air, water and materials coming from complementary regions are increasing in the areas; besides, the polluted air, water and materials are blocked by igneous rock at the north, and these only be released in the form of fountain and exploitation, causing some ions thickness grows continuously. Thirdly the thickness of the five regular components of the underground water at east area shows the trend of climbing in general, and the trend of underground water quality is worsening as a whole.