四川石棉县新棉温泉区泉水物理化学特征  

Physical and chemical characteristics of Xinmian hot spring water in Shimian County,Sichuan

作　　者：张正鹏 周大吉 郑捷 郭佳卫 王世宽 陈渝 ZHANG Zhengpeng;ZHOU Daji;ZHENG Jie;GUO Jiawei;WANG Shikuan;CHEN Yu(Chengdu Center of Hydrogeology and Engineering Geology,Sichuan Bureau of Geology and Mineral Resources,Chengdu 610036,Sichuan,China)

机构地区：[1]四川省地质矿产勘查开发局成都水文地质工程地质中心,四川成都610036

出　　处：《矿产与地质》2022年第3期654-661,共8页Mineral Resources and Geology

摘　　要：四川省石棉县新棉温泉开发历史较长,但是长期处于无序开采状态,前期针对新棉温泉的研究较为肤浅。为深入了解新棉温泉的地热资源赋存状态及潜力,揭示地热循环机理,定量评估研究区热储温度、冷水混入比例、地热循环深度等,从地下水在深部运移及上升过程中冷热水的交换作用的角度出发,采用Na-K-Mg三角图理论、混合模型、硅-焓模型等方法,分析新棉温泉的成因以及出露地表段冷水的参与程度。研究成果表明,新棉温泉的水质较为稳定,基本不随季节波动,水质类型以Cl-Na为主,温泉的补给区高程为2135 m;补给水源主要为大气降水,径流区热储层的温度为130℃,热储层埋深5132 m;地下热水在排泄区上涌至地表的过程中接受了表层地下冷水的混入,冷水混入比例为66%。地下水在热储层中径流时间、径流途径、径流深度及压力等条件中等,地下水与围岩的水岩作用程度与时间均为中等,导致温泉水中偏硼酸、偏硅酸、HCO^(-)_(3)、F、As等成分浓度相较于补给水源的成分浓度有所增加,但增量有限。研究成果为评价新棉温泉水质潜力提供了数据支撑及理论支撑,同时为同类型的温泉(受断裂控制的带状温泉)水质研究提供了借鉴方法,为新棉镇的温泉产业开发提供了科学依据。There is a long history of development for Xinmian hot spring in Shimian County of Sichuan Province,but it is in a state of disordered exploitation for a long time.The previous research on Xinmian hot spring is relatively in a shallow degree.In order to have a deep understanding of the occurrence and potential of Xinmian hot spring geother-mal resources,the mechanism of thermal cycle,quantitative evaluation of heat storage temperature,cold water mixing ratio and thermal cycle depth in the study area are revealed and conducted.In perspective of the exchange of hot and cold water during the deep migration and rise of groundwater,this study has analyzed the genesis of Xinmian hot spring and the participation degree of the exposed surface cold water with the methods of NA-K-MG triangle dia-gram,mixing model and silicon-enthalpy model.The research result indicates that the water quality of Xinmian hot spring is relatively stable and it does not fluctuate with the season generally.The water quality type is mainly Cl-Na,and the elevation of the recharge area of the hot spring is 2135 m.The recharge water is mainly meteoric precipitation.The temperature of the thermal reservoir in the runoff area is 130℃,and the burial depth of the thermal reservoir is 5,132 m.In the process of the hot water rising up from the deep drainage area to the surface,the surface water is mixed with the cold water,and the proportion of cold water is 66%.The runoff time,runoff path,runoff depth and groundwater pressure in the thermal reservoir are medium,and the water-rock interaction degree and time between groundwater and surrounding rock are also medium as well.For the study result,the concentration of metaborate acid,metasilic acid,HCO_(3)^(-),F,As and other components in the spring water increases slightly compared to that in the recharge water source,but the increment is limited.The research result provides the data and theoretical support to evaluate the water quality potential of Xinmian hot spring,and provides a reference method for th

关 键 词：新棉温泉 水文地球化学 冷热水混合机制 矿物饱和指数 氢氧同位素 

分 类 号：P641.12[天文地球—地质矿产勘探]