滇西盈江盆地地下热水循环系统特征及资源潜力  

Characteristics of the underground hot water circulation system western Yunnan Yingjiang basin and resources development potential

作　　者：张华 何绕生 康晓波 杨颖彬 李芹 高瑜 周俊蓉 柴金龙 ZHANG Hua;HE Raosheng;KANG Xiaobo;YANG Yingbin;LI Qin;GAO Yu;ZHOU Junrong;CHAI Jinlong(Yunnan Key Laboratory of Geohazard Forecast and Geoecological Restoration in Plateau Mountainous Area,Kunming,Yunnan 650216,China;Key Laboratory of Geohazard Forecast and Geoecological Restoration in Plateau Mountainous Area,MNR,Kunming,Yunnan 650216,China;Yunnan Institute of Geo-Environment Monitoring,Kunming,Yunnan 650216,China;Yunnan Geological Survey,Kunming,Yunnan 650051,China)

机构地区：[1]云南省高原山地地质灾害预报预警与生态保护修复重点实验室(筹),云南昆明650216 [2]自然资源部高原山地地质灾害预报预警与生态保护修复重点实验室,云南昆明650216 [3]云南省地质环境监测院,云南昆明650216 [4]云南省地质调查局,云南昆明650051

出　　处：《中国岩溶》2024年第6期1317-1326,共10页Carsologica Sinica

基　　金：中国矿产地质志项目(DD20160346,DD20190379);云南省地质勘查基金项目“云南省盈江至陇川高温热水带地热资源专项调查”(D201709)。

摘　　要：滇西盈江盆地地热位于盈江-陇川高温热水带,属滇西高温热水区高黎贡山-腾冲亚区,地热资源丰富,但调查和研究程度低,地热资源补给来源、资源量和潜力不清。文章通过野外调查、基础地质分析、数学模型、中国大气降水线方程等方法分析地热地质构造特征、储热层结构和边界、地热水补给来源和途径,应用温泉放热量法、泉流汇总法计算地热资源量。研究表明:盈江盆地新构造运动强烈,构造发育,深部有较强的热流活动,推测岩浆囊为主要热能来源;盆周山区大气降水入渗深循环补给地下水,补给距离2.0~9.9 km,补给深度1.6~3.0 km;地下水沿着风化花岗岩、变质岩原生裂隙和后期构造断裂带下渗到地壳深部,经深部热源加热后向上运移形成地热流体,储存于盆地底部及边缘孔隙、裂隙含水层和断裂破碎带,在地貌和构造有利部位出露形成温泉和热泉;地热流体储存的热量为484.63×10^(6) MJ,可开采量317.8万m^(3)·a^(-1)。The geothermal energy of the Yingjiang basin is located within Yingjiang-Longchuan high-temperature hot water belt,which is part of Gaoligongshan-Tengchong sub-area of high-temperature hot water region of western Yunnan.The study area belongs to the southern extension of Gaoligong mountain,where the terrain gradually descends from the northeast to the southwest,resulting in an overall spatial pattern characterized by valleys and ridges.Basins,mountains,and rivers in the area are controlled by structure,showing a NE-SW trend.In addition,the Yingjiang basin is a fault basin formed by geological structure.Its geomorphology are divided into five categories:fault accumulations,low hills of lake terraces,shallow cutting gentle slopes of low or middle-height mountains,medium cutting steep slopes of middle-height mountains,and karst middle-height mountains.The Yingjiang basin is located in the eastern margin of the collision zone between the Indian Plate and the Eurasian Plate.Due to the active crustal movement for a long time,the geological structure in this area is complicated,the rock fold is broken and the stratum is missing.The outcrop strata are mainly composed of Lower Proterozoic Gaoligongshan Group(Pt1GL.),Devonian Guanguan Formation(D1g),Permian Bangdu Formation(P1b),Neogene Mangbang Formation(N2m)and alluvial and pluvial strata of the Quaternary(Q).The Yingjiang basin is rich in geothermal resources with a total of 38 geothermal points,and the geothermal outcrops can primarily be classified into 3 types:hot springs,hot wells,and open wells.However,the investigations and studies on geothermal resources are not sufficient,and especially the source of geothermal resources recharge,and the amount and potential of geothermal resources need to be illuminated.In this study,the geothermal geological structures,geothermal structures,boundaries,sources and pathways of geothermal recharge of the study area have been analyzed and studied through field investigations,basic geological analyses,mathematical models,and equati

关 键 词：盈江盆地 地热 循环系统特征 资源量 

分 类 号：P314[天文地球—固体地球物理学]