贵州找水工程高氟地下水分布特征及成因分析

通过对贵州省2007~2012年找水工程中所钻1 023口机井的水质资料收集分析可知:有34口机井的氟含量超标(1.02~3.72 mg/L)。本文以这34口机井为研究对象,从地理位置、地形地貌、地层岩性、涌水量、地下水类型等方面分析机井高氟地下水分布特征,并对其成因进行探讨,重点分析其水化学特征,对F-与其他组分进行相关性分析表明:其大致表现出F--Ca2+、F--SO42-、F--(总硬度-总碱度)、F--Ca2+/(K++Na+)彼此的正相关关系,与pH有关,而与其他离子的关系不明显。

High fluoride groundwater distribution characteristics and genetic analysis of water exploration engineering in Guizhou

By collecting and analyzing water quality of 1023 power - operated wells which drilled m oride groundwater from the geographical position, topography, formation lithology, water inflow, water types and other aspects. Further, this paper discusses its causes from the above several aspects, espe- cially the water chemical characteristics. According to the correlation analysis of F- and other compo- nents, it roughly showed that the positive correlation of F- with Ca2＋ , SO42- ,total hardness minus to- tal alkalinity and Ca2＋/（ K＋ ＋ Na＋） are related to the PH, and have not obvious relationship with other ions .