华北平原地下热水矿床分布规律及形成

我国华北平原分布有大小不等、形状各异的地下热水矿床;赋存于石灰岩地层形成的地质构造凸起部位的地下热水富水性好,井产水量大,自喷能力强,水质好,矿化度低,温度高,具有较高的开发利用价值。华北平原地下热水的热源与第三纪侵入的火成岩无关。地下热水的补给来源是山区大气降水渗入地下经过较大的构造断裂带和碳酸盐岩地层岩溶溶洞、断裂裂隙深循环以后形成的。地下热水的温度主要取决于水循环的深度。

The distribfion law and the formation of underground hot water in Huabei Plain

Huabei Plain is a large underground hot water basin.In the basin,there are many layers containing the underground hot water of the tertiary system.The convex parts of the geological structure formed from Wu- mi mountain siliceous limestone directly covered by the tertiary system are full of underground hot water. The underground hot water in Huabei Plain forms a underground hot water deposit.In the deposit,the water has some advantages such as good watery,high temperature and fine quality. The underground hot water in Huabei Plain was not influenced by igneous rocks in the tertiary system. It is the result of a deep water circulation caused by the atmospheric water in the mountains permeating the ground and passing the larger structural fault zone.The temperature of the underground hot water is deter- mined by the depth of the circulation of the water.