云南硫磺洞温泉水文地球化学特征和成因分析  

Hydrogeochemical Characteristic and Formation of the Liuhuangdong Spring in Yunnan Province

作　　者：刘成龙[1] 王广才[2] 史浙明[2] 孔庆敏 赵丹 张卉 何德强 LIU Chenglong;WANG Guangcai;SHI Zheming;KONG Qingmin;ZHAO Dan;ZHANG Hui;HE Deqiang(Institute of Geology,China Earthquake Administration,Beijing 100029,China;China University of Geosciences,Beijing 100083,China;China Aero Geophysical Survey and Remote Sensing Center for Natural Resources,Beijing 100083,China;Zhaotong Earthquake Agency,Zhaotong 657000,Yunnan,China)

机构地区：[1]中国地震局地质研究所,北京100029 [2]中国地质大学(北京),北京100083 [3]中国自然资源航空物探遥感中心,北京100083 [4]昭通市地震局,云南昭通657000

出　　处：《地震研究》2020年第2期278-286,417,共10页Journal of Seismological Research

基　　金：国家自然科学基金(41572238,U1602233);中国地震局地质研究所基本科研业务专项(IGCEA1205)联合资助.

摘　　要：以云南巧家硫磺洞温泉为研究对象,开展水化学类型、温泉水循环特征和成因研究,并对其监测地震前兆的适宜性进行研究。结果显示:该温泉的水化学类型为HCO3·SO4-Ca·Mg型,主要为海拔2200~2300 m的大气降水入渗补给,热储温度约为210℃,循环深度为4742.5 m,且与该地区地震震源深度优势面基本吻合。硫磺洞温泉的成因为大气降水入渗经过深循环后沿逆冲型大包厂断裂流出地表而形成,硫磺洞温泉对该地区地震发生起着重要的影响作用。分析认为,大包厂断层地震活动性较强,且温泉循环深度较深,适宜进行地震前兆地球化学观测。We have studied the Liuhuangdong spring to evaluate whether it is suited for monitoring earthquakes,including hydrochemical type,water cycle characteristics,and formation mechanism.The results indicate that the hydrochemical type of spring is of HCO3·SO4-Ca·Mg.The water originates from a geothermal reservoir at about 4742.5 m depth and supplies by meteoric water at about 2200~2300 m altitude.The temperature of the geothermal reservoir is about 210℃.The circulation depth of spring is the same as the preferred plane of focal depth in this area.The research results show that the Liuhuangdong spring mainly comes from rainfall infiltration.The rainfall is heated by the surrounding rock during the runoff.Then,it comes out along the Dabaoshan fault.Hence,the Liuhuangdong spring plays an important role in earthquakes formation in this area.Due to the strong seismic activity of the Dabaoshan fault,the Liuhuangdong spring with a deep circulation is suited for earthquakes monitoring.

关 键 词：硫磺洞温泉 水文地球化学特征 形成机制 大包厂断裂带 

分 类 号：P315.724[天文地球—地震学]