河北省石家庄市区地下水源地供水安全性分析

多年来,石家庄市区以地下水为主要水源。但黄壁庄水库副坝除险加固后,地下水侧向补给量被大量截取,石家庄市区傍河水源地供水安全受到威胁。本文阐述了石家庄市区地下水开发利用历史与现状,分析了黄壁庄水库副坝除险加固后对下游地下水的影响以及石家庄市区近期水资源供需形势。通过设计降水频率,计算出四水厂和七水厂逐眼供水井的水位,再通过设计水源井安全水位,对水源地主要水厂的水源井逐眼进行安全性分析,进而得出水源地供水安全评价结果。

ANALYSIS OF WATER SUPPLY SAFETY OF GROUNDWATER SOURCE AREA IN SHIJIAZHUANG URBAN DISTRICT OF HEBEI PROVINCE

Groundwater is the main water supply source of Shijiazhuang city for many years. But, as the reinforcement of the Huangbizhuang reservoir auxiliary dam, a project to control the reservoir leakage, the groundwater side recharge from the reservoir seepage, as a part of total groundwater supply for Shijiazhuang city, is largely cut off by the auxiliary dam. This results in a new problem of water supply safety of riverside groundwater source. This paper described the history and present condition of groundwater exploitation and utilization in Shijiazhuang city, analyzed the auxiliary dam reinforcement how to affect the groundwater of lower head area, and also analyzed the situation of supply and demand for water resources in the near future. According to designing frequency of precipitation, the water levels of all the wells which belong to groundwater-pumping plant No.4 and No.7 were calculated. Furthermore, on the basis of safety analysis for the main water supply wells of groundwater source, a assessment of water supply safety is gained through designing the safety stages of wells.