The Evolution Trends And Cause Of Karst Springs Water Quality In Shanxi Province

By contrasting the data 20 years ago to that of 2004 on water quality of karst springs, this thesis indicates it has differential tendency of karst springs' pollutions under diverse geological background; Liu lin spring and Niang ZiGuan spring has been taken as proxy springs, and given special analyses, the leaching experiment of coal-residue is done, all the conclusions prove that the people activities, particularly mining, is an important factor influencing spring quality.First, I collected and studied all material of springs water quality literature of mid-80's in 20 century, and combine with the data of springs water quality of 2004.According to national standard GB/T 14848-93 《evaluation of groundwater quality》, the thesis use mathematic methods, such as bulbar evaluation means and synthesis gradation means to do the analysis. Then, by comparing, according to the extent of polluting, I classified the spring into 3 types: 1) under severe polluted situation, the springs pollution fountain distribute in recharge and flow area. 2) No obvious pollution, the springs polluting fountain locate in drainage areas . 3) Becoming increasingly pollution , The springs polluting fountain locate in recharge, discharge and drainage area.Secondly, taken Liu Lin spring and Niang ZiGuan spring as the representative spring, it also had been given particular analyses, it getting me that the alternating tendency of spring water quality is associated with the site of outcrop of coal gangue. Furthermore, the influence of coral mining to karst groundwater has being emphases.Thirdly , In order to prove coal gangue is an key factor to karst water quality, I...