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本文对河南省１７个县（市）１９８２－１９９４年间所建１２２６处降氟改水打井工程使用情况进行了现况调查，因管水组织不健全、动力不配套、机械管道损坏或丢失等原因而停用一年以上工程为１８９处，占１５．４２％。对其正在使用的１０３７处工程水氟含量进行了测定：水氟大于１．０ｍｇ／Ｌ者占１６３处，超标率为１５．７２％。监测井深在４０米以内工程１４９处，水氟大于１．０ｍｇ／Ｌ者占４３处，超标率为２８．８６ｏ／ｏ：井深在４１－６０米工程２０８处，水氟大于１．０ｍｇ／Ｌ者３４处，超标率为１６．３５％：井深在６１－９９米工程３２１处，水氟大于１．０ｍｇ／Ｌ者４３处，超标率为１３．４０％：井深在１００米以上工程１８４处，水氟大于１．０ｍｇ／Ｌ者占１２处，超标率为６．５２％。本次共监测井壁材料为钢管工程水氟６９处，仅有１处大于１．０ｍｇ／Ｌ超标率仅占１．４５％，提示：①水氟含量随井的深度递增而呈现逐渐降低的趋势，二者呈高度负相关关系（ｒ＝－０．９１３８Ｐ＜０．０１）。②选用坚固耐用而密封较好的钢管井壁能够有效防止不同水氟地下水相互渗漏。
This paper investigates the current situation of the use of 1226 fluorine-reducing water diversion wells in 17 counties (cities) of Henan Province during 1982-1994. Because of the unsound water management organization, the power is not complete, the mechanical pipeline is damaged or lost, etc. The reason for stopping the project for more than one year is 189, accounting for 15.42%. The fluorine content of the 1037 engineering water it was used for was determined: the water fluorine is more than 1.0mg / L, accounting for 163, exceeding the standard rate of 15.72%. The monitoring depth is within 149 meters and the water content is more than 1.0mg / L, accounting for 43 places. The exceeding standard rate is 28.86% / o. The depth of well is between 208 and 4160 meters, water fluoride is more than 1.0mg / L In 34, the rate of over standard rate was 16.35%. There were 321 wells with a depth of 61-99 meters and 43 fish with a water fluoride level of more than 1.0 mg / L. The exceeding standard rate was 13.40% , Water fluorine greater than 1.0mg / L accounted for 12, exceeding the standard rate of 6.52%. The total monitoring shaft material for the steel pipe engineering fluoride 69, only 1 more than 1.0mg / L exceeded the rate of only 1.45%, suggesting: ① water fluorine content with the depth of the well and gradually decreased Trend, the two showed a highly negative correlation (r = -0.9138P <0.01). ② Selection of durable and well sealed steel pipe wall can effectively prevent the different water fluoride groundwater leakage.