湘西地区地下水污染现状调查

Current Pollution Situation Investigation of the Underground Water in Xiangxi Autonomous Prefecture

按水文地质水化学的特征布点采样,经分析测定,在湘西自治州54口监测井中,有13口水井水质属优良,有33口水井水质属良好,有7口水井水质属较差,1口水井水质属极差;33个地下水普查井(含洁净点)的平均综合指数为2.548,21个污染监控井(含热点区域点)平均综合指数为1.935;6个地下水普查井周边无工业及城市生活污染,水井水质平均综合指数为1.182,明显优于其他水井水质.全州地下水水质整体上已不容乐观,地下水的保护已迫在眉睫.

According to the hydrogeological property and laws of water abundance,well samples were selected and analyzed.The result showed that among the 54 wells in Xiangxi autonomous prefecture there were 13 wells with excellent water quality,33 wells with good water quality,7 wells with poor water quality and 1 with awful water quality.The average composite index of 33 water wells surveyed（clean included） was 2.548,and the composite index of 21 pollution monitored wells（hot point included）was 1.935;there was no industrial and urban pollution surrounding 6 wells,and the water quality composite index of the wells was 1.182,which was obviously superior to others.The quality of underground water of Xiangxi autonomous prefecture is not optimistic and the underground water needs to be protected immediately.