贵州泗塘温泉成因分析

Genetic analysis of Sitang hot spring in Guizhou

文章结合区域地热地质特征以及温泉的水化学、热储构造、热能来源,分析了泗塘温泉所处的地质条件、水文地质条件,并从地热水的补给、径流、排泄等方面对泗塘温泉成因模式进行了研究。结果表明:泗塘温泉受塘头断层、石阡断层控制,属断裂性温泉;其接受大气降水补给,即大气降水通过岩溶管道、裂隙下渗至含水层,在地温加热下形成地热水;地热水沿深部断裂构造线由北东向南西径流,在断裂的导水控制以及河谷切割下岀露形成。希望文章研究成果为泗塘温泉开发提供参考。

The geological and hydro-geological conditions of the Sitang hot spring were analyzed from regional geothermal condi- tions in combination with hydrochemical types, thermal structure of reservoir and heat source of hot spring, and the genetic model of the hot spring was studied from aspects of recharge, runoff and drainage of geothermal water etc. The study results show that Sitang hot spring is a fractured type hot spring and its development was conjointly controlled by Tangtou fault and Shiqian fault. The spring was mainly recharged by atmospheric precipitation. The atmospheric water is infiltrated downward into the aquifer through karst channels and fractures, and formed geothermal water by heating effect of geothermal rock. Finally, the geothermal water flew to southwest direction from northeastern direction along deep fracture structure, and outcropped by the water-conductive function of faults and carved river valley. The study results will provide a scientific basis for the development and utilization of Sitang hot spring.