滇西某温泉成因模式研究

Study on the Genetic Model of a Certain Hot Spring in Western Yunnan Province

在对温泉所处地区的区域地质背景、水文地球化学特征进行分析的基础上,研究与温泉形成密切相关的热源、水源、热储、循环深度、通道、盖层等必备条件。根据分析研究成果确定了温泉的成因模式为:大气降水在研究区西部1 800 m左右的山区顺区域性断裂向地壳深部径流。在运移过程中,地下水不断从岩石中获取热量并逐渐被加热,当循环至约1 870 m深度时水温增至83℃左右,形成深部热储。地下水在水头和密度差作用下顺F1断层向地表运移并在地形有利部位出露形成了温泉群。

This paper researched the heat source,water,heat storage,circulation depth,channel,cover and other essential conditions,which is closely related to the formation of hot spring on the basis of analysis in the area of the regional geological background,the hydrogeochemical characteristics of hot springs. According to the results of the analysis,the cause of the genetic model of the hot spring is determined. Atmospheric precipitation runoffs to the deep crust of the earth in the study area of the western region of the 1800 m around the region of the regional fault. The groundwater is getting heat from the rock and gradually heated in the process of migration. The water temperature is increased to 83 degrees when it cycled to about 1870 m depth and formed deep geothermal reservoir. In the end,the groundwater transports to the surface by F1 fault and becomes hot springs in the favorable terrain under the action of water head and density difference.