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平原区水化学的基本特征、地下热水的同位素特征,可以反映地下热水的补给条件。河北平原地下热水水化学特征明显受补给、径流、排泄条件及地质构造的控制,从山前平原至中部平原、滨海平原,由新近系热储到深部基岩热储,水化学类型由HCO_3—Na型、HCO_3·CL—Na型,逐渐过渡为CL·HCO_3—Na型,最终到排泄区或封闭状态下变为CL—Na型;矿化度从浅到深由小于3g/L增高到大于10g/L。
The basic characteristics of plain water chemistry and the isotopic characteristics of underground hot water can reflect the supply conditions of underground hot water. Hydrochemical characteristics of underground hot water in Hebei Plain were obviously controlled by recharge, runoff, excretion and geological structure. From the piedmont plain to the central plains and the coastal plain, the Neogene thermal reservoir to the deep bedrock thermal reservoir was composed of HCO_3 -Na, HCO_3 · CL-Na gradually transition to CL · HCO_3-Na, and eventually to the excretory or closed state into the CL-Na type; salinity from shallow to deep from less than 3g / L increased to Greater than 10g / L.