本文重点讨论了应用SiO2地热温度计估算横泾地区若干温泉的地热储温度。讨论表明，应用上升热水与浅部冷水没有混合的绝热冷却的SiO2（石英）-焓图和传导冷却的石英地热温度计，计算的地热储的最低温度范围是78～134 ℃，而最高的温度范围是95～155 ℃；应用上升热水与浅部冷水产生混合，而混合之前蒸气已全部损失的SiO2（石英）-焓图，计算的地热储的最低温度范围是83～138 ℃。因此，可以认为横泾地区温泉水地热储的最低温度范围可能是78～138 ℃，而最高温度范围可能是95～155 ℃。%This paper deals emphatically with the application of SiO2 geothermometer to estimating the geothermal reservoir temperature of some thermal springs in Hengjing area. Studies show that, when the dissolved SiO2 (quartz)-enthalpy diagram is used for adiabatic cooling, and the quartz geothermometer equation is adopted for conductive cooling without mixing with cold water during upflow, the lowest estimated temperatures of the geothermal reservoir are in the range of 78～134 ℃ and the highest estimated temperatures are between 95 and 155 ℃. When the dissolved SiO2 (quartz)-enthalpy diagram is employed for the mixing models, in which the steam was lost before mixing with the cold water, the lowest estimated temperatures of the geothermal reservoir are in the range of 83～138 ℃. Therefore, it is believed that the lowest temperatures of the geothermal reservoir in Hengjing area are probably in the range of 78～138 ℃ and the highest temperatures are in the range of 95～155 ℃.
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