西藏错那地热田水化学特征与物源机制

错那县位于西藏自治区山南地区南部、喜马拉雅山脉中段，是我国重要的边境口岸。为了研究错那地区地热田的水化学特征与物源机制，通过对研究区的温泉点水样的水化学数据进行化验分析，结合研究区的地热地质条件，使用piper三线图和Gibbs图等分析了水化学特征和物质来源。在阐明几种主要的地热温度计原理和适用条件的基础上，利用各种地球化学温度计和多矿物平衡图解法对研究区地下热水进行了温度估算。基于综合分析，最终得出热储温度为117℃左右，分析出地下热水的水化学类型以HCO₃-Na型为主，并进行了相应的地热资源评价。这有助于查明地下热水物质来源，探明该地区地热资源，以便在今后为该地区的地热资源开发利用提供技术支持，同时也推动了生态环境的保护和能源结构的逐步改变。 

Characteristics and source mechanism of geothermal field in Cuona,Tibet

Cuona county is located in the south of shannan region of Tibet and the middle of the Himalayas, which is an important border port in China. To study the characteristics and source mechanism of geothermal field in Cuona, we use hydrochemical meathods such as piper and Gibbs to analyze the hydrogeochemical characteristics and main material sources of the hot springs water with geothermal geological conditions. The temperature of reservoir in the research area is calculated by geothermometers and graphic method of multi-mineral balance after a detailed introduction of the principles of several methods.The comprehensive analysis results indicate that the geothermal reservoir temperature is about 117℃ and the study area is of HCO₃-Na type. The next step is to evaluate the resources. The research work we have done can identify main material sources and resources, provide technical support for the development and utilization of geothermal resources, meanwhile, promote ecological environmental protection and change energy structure in this region.