潜水高氟区域改水井水氟监测分析

目的 探讨有效的打井改水方法。方法 依据成井水氟和枯、丰水期监测水氟的高低对改水井进行分组，比较各组井深、封井深、井管壁分布的差异，并对差异因素与水氟进行相关回归分析。分析各井组监测水氟波动规律。结果 封井深与成井水氟成显著的直线负相关关系（Ｐ〈０．０１）。监测水氟的波动特点：双低井组稳定；低高井组突然升高并保持稳定；双高井组在１１年内呈现两年高峰，其间隔为３年。井位之间水氟差异显著。结论 改水井

Monitoring and analysis of the water fluorine in the reformed-wells where the fluorine in the ground water is high

Objective To look for the effective way of drilling well to ameliorate water. Methods We group the reformed wells according to the water-fluorine during the enough-water time and the depth,the enclosed well's depth and the structure of the well wall among the groups ,then make a regression analysis and a correlation analysis on the different cause,we also analyse the fluctuating of water fluorine in every group.Results There's a noticable linear negative correlation between the enclosed well's depth and the water fluorine (P<0.01). The fluctuating feature about the monitor6d fluorine is different in defferent groups. The water fluorine of the ligh-high group show two peaks with an interval of three years between them. Conclusions The water in the ameliorated wells was influenced by the enclosed well's depth and the position of the well. It suggest that the formallied wells should take the groud water from under the enclosed well depth of 118.33 metres or the deep water under the continuative water proof layer. In the first five years,we should measure the water-fluorine of the formallied wells in each enoughwater time. If there's no obvious rising again,we can measure it every four enough-water times.