黄河下游影响带地下水库的基本特征

Basic characteristics of groundwater reservoirs of the affected zone along the Lower Yellow River in Henan province

本文论述了黄河下游影响带(河南段)的水文地质特征,根据含水层的结构划分为浅层和深层含水层组,并给出了研究区地下水补给资源量和可开采资源量。黄河影响带含水层具有巨大的储水空间和良好的调节能力,是一巨大的地下水库。本文将地下水库划分为滩地型、背河洼地型、冲积扇型和复合型4种类型,并分别论述了各类地下水库的分布、补给特点和调蓄能力,提出了12处地下调蓄水库的有利地段,初步计算地下水库总库容为139 54亿m3,调节库容5l 23亿m3,最后论述了地下水库开发和保护措施。

The authors discussed the hydrogeological characteristics of the affected zone along the Lower Yellow River in Henan Province. Based on the structure of aquifers, the groundwater system in this zone was divided into two groups:shallow aquifers and deep aquifer. The rechargeable groundwater resources and safe yield were given. The aquifers in the zone were regarded as vast groundwater reservoirs with a powerful regulation capacity. The total capacity of the reservoirs is about 14 billion m3 and the regulation capacity is about 51 billion m3. The reservoirs can be classified into 4 types:flood plain; swale outside dyke; alluvial fan and compound. The distributions, recharging characteristics and regulation capacity of each type of the reservoirs were discussed and 12 suitable sites for the reservoirs were proposed. Development and protection of the groundwater reservoirs were also put forward.