新疆布尔津县冲乎尔盆地地热资源水化学特征及地下热水成因分析  

Hydro-chemical characteristics and causes of geothermal resources in Chonghuer basin,Buerjin County,Xinjiang

作　　者：喜英 张同良[2] 齐志龙 XI Ying;ZHANG Tong-liang;QI Zhi-long(No.1 hydro-logical engineering geological brigade of Xinjiang Bureau of geology and mineral exploration and development,Urumqi 830091,Xinjiang;Geothermal research center of Xinjiang institute of engineering,Urumqi 830023,Xinjiang)

机构地区：[1]新疆地质矿产勘查开发局第一水文工程地质大队,新疆乌鲁木齐830091 [2]新疆工程学院地热研究中心,新疆乌鲁木齐830023

出　　处：《地下水》2024年第1期52-55,共4页Ground water

摘　　要：以冲乎尔镇为中心,探明新疆布尔津县冲乎尔盆地地热资源,运用舒卡列夫分类和派珀三线图解分类,通过对比和分析不同区域地下水组分和化学特征,探讨了地热水的来源和成因。结果表明,冲乎尔盆地水化学类型为HCO_(3)-Ca·Mg、HCO_(3)·SO_(4)-Mg·Ca·Na、HCO_(3)-Ca·Mg型;地下水的δ^(18)O和δD值均在大气降水线附近,说明其补给源均为大气降水;根据对冲乎尔盆地水点进行碳-14年代测定,发现地下水年龄在95~1460 a之间,属于深循环地下水;热储属于带状热储,热交换温度为68.9℃~73.9℃,说明研究区基础温度较高具有较大的开发潜力。冲乎尔盆地地下水通过大气降水入渗水后必然顺构造裂隙向深部运动,经过深循环大地热流加热密度降低,再通过深大断裂上涌,形成地热水。Taking Chonghuer town as the center,exploring the geothermal resources of Chonghuer Basin in Buerjin County,Xinjiang,using the Shukalev classification and the three-line graphic classification of Piper,and exploring the source and causes of geothermal water by comparing and analyzing the groundwater components and chemical characteristics of different regions.The results show that the hydro-chemical types of Chonger Basin are HCO_(3)-Ca·Mg,HCO_(3)·SO_(4)-Mg·Ca·Na,and HCO_(3)-Ca·Mg;theδ^(18) O andδD values of groundwater are near the atmospheric precipitation line,indicating that the recharge sources are atmospheric precipitation;According to the carbon-14 dating of Huer Basin,the groundwater age is between 95 and 1460 years and belongs to deep circulation groundwater;the heat storage belongs to belt heat storage and the heat exchange temperature is 68.9℃~73.9℃,indicating that the high base temperature in the study area has great development potential.The groundwater in Chonghuer Basin will inevitably move along the structural fissure to the deep after seepage.After the deep circulation earth heat flow heating density is reduced,and then surges through the deep large fracture.

关 键 词：冲乎尔盆地 水文地球化学特征 地热水 热储 成因分析 

分 类 号：P314.1[天文地球—固体地球物理学] P641.12[天文地球—地球物理学]