康定二道桥-榆林宫地区地下热水出露特征

THE EXPOSED CHARACTERISTICS OF UNDERGROUND HOT WATER IN ERDAOQIAO TO YULINGONG AREA,KANGDING

通过野外地质调查和资料收集,研究康定二道桥至榆林宫地下热水出露特征。结果表明:(1)研究区热水均沿断裂和水系分布,从二道桥至榆林宫出露约有42个泉点及泉群和12个地热井。(2)研究区天然温泉的温度范围为21℃～89℃,地热井为42℃～125℃;天然出露温泉的矿化度范围为445.9～2 297 mg/l,地热井为899～3 583 mg/l。(3)研究区天然温泉Y30温度最高(89℃),Y10的矿化度最高(2 297 mg/l),两者分别出露于大雪山-农戈山断裂西部的第四系砂砾岩和燕山期花岗岩中。地热井ZK12温度(125℃)和矿化度(3 583 mg/l)皆为最高,出露于二台子断裂南部的燕山期花岗岩中。

Through the geological survey and data collection in the field, the characteristics of underground hot water exposure from Kangding Erdaoqiao to Yulingong were studied. The results show that:(1) The hot water in the study area is distributed along the fault and water system. There are about 42 springs and spring groups and 12 geothermal wells from Erdaoqiao to Yulin gong;(2) The temperature range of natural hot springs in the study area is 21 ℃~89 ℃, the geothermal wells are 42 ℃~125 ℃;the mineralization degree of natural exposed hot springs is 445.9~2 297 mg/l,and the geothermal wells are 899~3 583 mg/l.(3) The natural hot spring Y30 in the study area has the highest temperature(89 ℃), and the highest salinity of Y10(2 297 mg/l) is exposed in the Quaternary glutenite and Yanshanian granite in the west of the Daxueshan-Nonggeshan fault. The geothermal well ZK12 temperature(125 ℃) and salinity(3583 mg/l) are the highest, exposed in the Yanshanian granite in the south of the Ertaizi fault.