对洱源盆地及周缘温泉的分布及其成因进行了初步研究, 研究表明: 洱源牛街—三营区及洱源—炼城区地热水水化学类型以HCO3 · SO4—Na· Ca型水为主, 中性, 含氡; 下山口—西湖温水村区内地热水为弱碱性, 富含偏硅酸、 锶、 锂、 偏硼酸、 钙等多种元素. 大气降水、 浅表岩溶水、 基岩裂隙水及深部循环地下水为各温泉井的补给来源, 断裂破碎带为地下热水、 浅层地下水及地表水提供了良好的循环交换通道. 热源主要由岩浆余热扩散、 放射性元素蜕变热 (氡是放射性元素铀、 镭等衰变的结果)、 正常地热增温及断裂活动摩擦生热等热源来源.%According to previous research,combined with field surveys,sampling and analysis,the authors preliminarily analyze the distributions and causes of the hot springs .Geothermal water chemistry type of the Eryuan Niujie-Sanying、Eryuan-Liancheng hot springs strip districts is HCO 3 · SO4—Na· Ca containing radon .The Geothermal water chemistry type of Xiashankou-Xihu geothermal hot springs strip district is alkalescent ,rich in silicic acid,strontium,lithium,borate, calcium and other elements .Atmospheric precipitation ,superficial karst water ,bedrock fracture water and deep groundwa-ter are the recharge sources of the hot springs ,Fracture zone provides a good circulation exchange channel between the underground water ,shallow groundwater and surface water .The heat source of hot springs include magma heat diffusion , radioactive decay heat ,normal geothermal warming and faulting friction heat .
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