石家庄市城区地下水硬度升高机理分析

Mechanism of Increasing Ground Water Hardness in Urban District of Shijiazhuang

通过研究石家庄市城区地下水硬度平面上的分布特征和多年的变化规律,分析了地质环境条件和人类活动对地下水硬度升高的影响,在此基础上,进一步分析了人类活动和水文地球化学影响地下水硬度升高的机理,初步总结出石家庄市城区地下水硬度升高主要包括土壤、包气带的成分、岩性、结构、厚度等地质环境条件和人类排放的污染物、过量开采地下水等人类活动两个方面的因素,并采用方差分析的方法,研究了地下水硬度升高的矿物溶解、离子交换等3种模式,为石家庄市浅层地下水环境保护提供了重要地质科学依据。

Through studying planar distribution ieatures and multi-year changing laws ot grouna water narclness in uruan alsmcts of Shiji- azhuang City, influence of geological environmental conditions and human activities on the increase of ground water hardness was analyzed. On this basis, the mechanism of human activities and hydrogeochemistry influencing the increase of ground water hardness was further analyzed, including such geological environment conditions as soil, component, lithology, structure and thickness of aeration zone, and such human ac- tivities as pollutants, and overexploitation of ground water. Variance analysis was adopted to study the 3 models for the increasing ground water hardness such as dissolution of the minerals, and ion exchange, which provided an important geological basis for the environmental protection of shallow ground water.