从地球物理场信息分析西宁盆地地热地质条件

英文篇名：Analysis on Geothermal Geological Condition of Xining Basin on the Basis of Characteristic of Geophysical Field
中文刊名：西北地震学报
英文刊名：Northwestern Seismological Journal
作者：王斌 ; 何世豪 ; 李百祥
英文作者：WANG Bin1 ; HE Shi-hao1 ; LI Bai-xiang2(1.Qinghai Provincial Institute of Environmental Geological Survey of Hydrogeology and Engineering Geology ; Xining 810008 ; China ; 2.No.2 Geology Exploration Institute ; Bureau of Geology and Mineral Resources of Gansu Province ; Lanzhou 730020 ; China)
中文关键词：西宁盆地 ; 地球物理场 ; 可控源音频大地电磁测深 ; 地热地质条件 ; 断裂对流型 ; 盆地传导型
英文关键词：Xining basin ; Geophysical fields ; Controllable source audio frequency geo-magnetic sounding(CSAMT) ; Geothermal geological condition ; Fracture convection type ; Basin conduction type
出版日期：2011-06-30
机构：青海省水文地质工程地质环境地质调查院;甘肃省地矿局第二地质矿产勘查院;
年：2011
期：02
出版单位：西北地震学报

摘要

在对西宁盆地进行可控源音频大地电磁测深(CSAMT)全面探测的基础上,结合以往重力、地震、大地电磁测深、直流电测深等物探资料综合解释,揭示了西宁盆地隆坳构造格局和盆地性状,据地温场分布特征探讨了热储类型,指出西宁盆地中西宁坳陷属张性、张扭性,具有地温场高、地温梯度大的特点,且热储类型具盆地传导兼断裂对流型特征;大通、平安坳陷属压性、压扭性坳陷,地温场、地温梯度相对较低,热储类型为盆地传导型。西宁断陷是地热开发有利地段。
Based on the comprehensive explanation of controllable source audio frequency geo-magnetic sounding and previous geophysical prospecting data as gravity,earthquake,geo-magnetic sounding and direct current electric sounding,the tectonic framework of uplift with depression and features of Xining basin are obtained.According to distribution character of geothermal field,the geothermal reservoir type of Xining basin is discussed.It is indicated that the Xining depression in Xining basin is extensional and transtensile fault depression,characterized by higher geothermal field and geothermal gradient,it has both geothermal reservoir of fracture convection type and basin conduction type.While Datong and Pingan depression in Xining basin are compress-shear depressions,characterized by lower geothermal field and geothermal gradient,with reservior of basin conduction type.Xining depression is a favourable exploring region for geothermal resource.

引文

[1]许伟林,于漂罗.西宁市地热资源开发利用前景分析[A]∥中国地热资源开发与保护[G].北京:地质出板社,2007:147-151.
    [2]张丰雄,刘淑英,严维德.西宁地区地热资源分布规律探讨[J].资源与环境,2006,21:138-139.
    [3]石维栋,张森琦,周金元.西宁盆地北西缘地下热水分布特征[J].中国地质,2006,33(5):113-1136.
    [4]张森琦,石维栋,周金元.青海西宁城南新区杜家庄地热田地下水的地球化学特征[J].现代地质,2007,21(1):164-169.
    [5]李惠媂,张森琦,白嘉启.西宁药水沟地热田水化学特征及热水起源初探[J].地质学报,2007,81(9):1131-1136.
    [6]张森琦,李长辉,许伟林.西宁盆地热储构造概念模型的建立[J].地质通报,2008,27(1):126-136.
    [7]田勤俭,李智敏.西宁市活断裂地震构造模型初步研究[J].地震地质,2007,29(2):311-317.
    [8]胡圣标,何丽娟,汪集旸.中国大陆区大地热流数据汇编(第三版)[J].地球物理学报,2001,44(3):611-625.
    [9]汪集旸.中低温地热系统[M].北京:科学出版社.1990:206-210.
    [10]熊亮萍,汪集旸,庞忠和.漳州热田的对流热流和传导热流的研究[J].地球物理学报,1990,33(6):702-711.
    [11]汪洋,汪集旸,邓晋福,等.中国大陆主要地质构造单元岩石圈地热特征[J].地球学报,2001,22(1):17-22.