孝新合气田浅层地下水铁锰分布规律及成因分析

DISTRIBUTION REGULARITY OF FE AND MN IN SHALLOW GROUNDWATER IN XIAOQUAN-XINCHANG-HEXINCHANG GAS FIELD AND THE GAUSE ANALYSIS

针对川西孝新合气田浅层地下水铁、锰含量较高的问题,在总结现有水质资料的基础上,结合野外现场测试和实验室模拟实验,对浅层地下水中铁、锰离子的分布规律及其影响因素进行研究,认为有机质的输入和无机盐的增加、地下水系统中的氧化还原环境是造成该区浅层地下水中铁、锰离子含量较高的原因。

Located in the west of Sichuan,Xiaoquan -Xinchang- Hexinchang Gas Field has abundant shallow groundwater resources.However,the content of Fe and Mn in groundwater is very high. Based on the current data of groundwater quality, composition analysis in field and simulation test in lab,the distribution regularity of Fe and Mn and the influential factors are studied in this paper.The results show that addition of organic matter,increase in inorganic salt and oxidation-reduction environment in groundwater system are the reasons for high Fe and Mn content in shallow groundwater in this area.