成都市红层水井运行现状调查及水质评价

研究成都市红层水井运行现状,采用问卷调查和抽样调查方式对成都市红层水井展开调查,并运用标准指数法和综合评价法对红层区地下水进行质量评价。结果表明,2013年成都市红层水井综合使用率为69.21%;有30.79%的水井因水量小（或无）不具备使用价值、水质感观不好、垮井、建设用地占用水井、搬迁以及使用代替水源等原因不再使用;搬迁为水井废弃主要因素,占未使用水井总数的32.29%。地下水质量评价表明,红层水井地下水水质总体较差,占取样总数42%的水井处于较差~极差状况,硝酸盐、总硬度为主要超标指标。为此提出了加强红层水井管理的一些认识和建议。

The Operation Situation Analysis And Water Quality Evaluation of Red Bed Wells In Chengdu

Based on the questionnaire and sampling of the wells,groundwater quality has been assessed by standard index and comprehensive evaluation to study the red bed wells＇ operation situation. The results showed that the comprehensive utilization of red bed wells is 69. 21 % in Chengdu in 2013. About 30. 79 % of wells can＇t be used anymore,because of the amount of water is too little,the bad water quality,collapsing wells,occupying land for construction,in habitant moving and so on. Inhabitant moving is the main factor of abandoning wells,which accounted for 32. 29 % of the total unused wells. The result of quality assessment of groundwater shows that the water quality is bad. About 42 % of the water is in the condition of poor quality an the contents of nitrate and total hardness have exceeded the standards. The suggestions on strengthening the red bed wells management were put forward.