吉林大学学报(地球科学版) ›› 2019, Vol. 49 ›› Issue (3): 880-892.doi: 10.13278/j.cnki.jjuese.20180092

• 地球探测与信息技术 • 上一篇    下一篇

独山城地区多元信息干热岩预测模型

吴云霞1,2, 吕凤军2, 邢立新1, 刘新星2   

  1. 1. 吉林大学地球探测科学与技术学院, 长春 130026;
    2. 河北地质大学资源学院, 石家庄 050031
  • 收稿日期:2018-05-03 出版日期:2019-06-03 发布日期:2019-06-03
  • 通讯作者: 吕凤军(1975-),男,博士,教授,主要从事遥感地质方面的研究,E-mail:lvfj1973@sina.com E-mail:lvfj1973@sina.com
  • 作者简介:吴云霞(1978-),女,博士研究生,主要从事遥感地质方面的研究,E-mail:wuyunxia2006@163.com
  • 基金资助:
    国家自然科学基金项目(41702352);河北省社科基金项目(HB17GL014,HB15SH057);河北地质大学博士科研启动基金项目(BQ2018014)

Prediction Model of Multiple Information Dry-Hot Rock in Dushancheng Area

Wu Yunxia1,2, Lü Fengjun2, Xing Lixin1, Liu Xinxing2   

  1. 1. College of GeoExploration Science and Technology, Jilin University, Changchun 130026, China;
    2. College of Resources, Hebei GEO University, Shijiazhuang 050031, China
  • Received:2018-05-03 Online:2019-06-03 Published:2019-06-03
  • Supported by:
    Supported by National Natural Science Foundation of China(41702352), Project of Hebei Social Science Fund (HB17GL014, HB15SH057) and PHD Research Startup Foundation of Hebei Geo University (BQ2018014)

摘要: 针对干热岩勘查靶区不好确定的问题,以遥感技术为主导,辅以航磁、钻探、水文勘查技术,在上黄旗-乌龙沟断裂岩浆活构造带中南段——独山城地区尝试性开展干热岩资源勘查工作,在分析12种勘查地质数据特征的基础上,建立了独山城地区多元信息干热岩预测模型。通过地层、岩体、环形构造、线性构造遥感解译,推测研究区存在隐伏岩体,挤压形构造应力场控制岩体规模,岩体最大规模460 km2,航磁负异常佐证隐伏岩体;依据遥感热异常和水热蚀变异常推测地下存在热源,温泉、地热田、107.1倍空气氦体积分数、航磁负异常均佐证地下热源及高放射性的存在;初步估算地温梯度均值为3.87℃/hm;遥感地层解译盖层为中-新太古代、古元古代变质岩和中-新元古代沉积岩。独山城地区干热岩地质特征优于蔺文静初步建立的干热岩地热资源开发地热地质学标准,推测深部存在高放射性产热型干热岩资源,断裂交汇处为地下热水储集、排泄的最有利部位,并存在水热蚀变。建议进一步开展物探、深部钻探及温泉查实工作。

关键词: 独山城地区, 干热岩, 预测模型, 遥感地质, 航磁负异常, 地温梯度

Abstract: To determine the target area of dry-hot rock exploration, based on the analysis of the characteristics of twelve kinds of geological data, the exploration of dry-hot rock resources was carried out in the middle south section of the Shanghuangqi -Wulonggou fault magmatic tectonic belt in Dushancheng area using remote sensing technology, supplemented by aeromagnetic, drilling and hydrographic exploration technology. A multiple information dry-hot rock prediction model was set up. The Mesozoic magma activity is strong in this area. Through remote sensing interpretation of strata, rock mass, ring structure, and linear structure, it is inferred that there are concealed rock masses in the study area, and the size of rock mass is controlled by compressive tectonic stress. The aeromagnetic negative anomaly confirmed the concealed rock mass, and the largest rock mass is close to 460 km2. Hot spring, geothermal field, the 107.1 times air helium concentration,and the aeromagnetic negative anomalies all support the existence of underground heat and high radioactivity sources. The mean geothermal gradient is estimated to be 3.87℃/hm, and the cap-rocks are interpreted as Paleoproterozoic, Paleoproterozoic metamorphic rocks and Mesozoic and Neoproterozoic sedimentary rocks by remote sensing image. The geological characteristics of the dry-hot rock in Dushancheng area are superior to those of the dry-hot rock geothermal resources initially established by Lin Wenjing. It is presumed that there are high radioactive hot type dry-hot rock resources in depth, and the intersection locations of fractures are the most favorable places for storage and release of underground hot water. It is suggested that further geophysical prospecting, deep drilling and hot spring verification should be carried out.

Key words: Dushancheng area, dry hot rock, exploration model, remote sensing geology, aeromagnetic negative anomaly, geothermal gradient

中图分类号: 

  • P627
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