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甘肃省地热资源赋存特征及潜力评价

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谢娜, 喻生波, 丁宏伟, 张明泉. 2020. 甘肃省地热资源赋存特征及潜力评价[J]. 中国地质, 47(6): 1804-1812. doi: 10.12029/gc20200616
引用本文: 谢娜, 喻生波, 丁宏伟, 张明泉. 2020. 甘肃省地热资源赋存特征及潜力评价[J]. 中国地质, 47(6): 1804-1812. doi: 10.12029/gc20200616
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XIE Na, YU Shengbo, DING Hongwei, ZHANG Mingquan. 2020. Occurrence features of geothermal resources and geothermal potential assessment in Gansu Province[J]. Geology in China, 47(6): 1804-1812. doi: 10.12029/gc20200616
Citation: XIE Na, YU Shengbo, DING Hongwei, ZHANG Mingquan. 2020. Occurrence features of geothermal resources and geothermal potential assessment in Gansu Province[J]. Geology in China, 47(6): 1804-1812. doi: 10.12029/gc20200616
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甘肃省地热资源赋存特征及潜力评价

  • 1.

    甘肃省地质调查院, 甘肃 兰州 730000

  • 2.

    甘肃省地质环境监测院, 甘肃 兰州 730050

  • 3.

    甘肃省地质矿产勘查开发局, 甘肃 兰州 730000

  • 4.

    兰州大学资源环境学院, 甘肃 兰州 730000

  • 基金项目:
    中国地质调查局项目(12120113077300)资助
详细信息
    作者简介: 谢娜, 女, 1989年生, 硕士, 工程师, 主要从事地质生态环境研究; E-mail:xnddy1989@163.com
    通讯作者: 丁宏伟, 男, 1963年生, 教授级高级工程师, 主要从事水工环地质及地热地质调查研究; E-mail:zydhw8029@163.com

  • 中图分类号: P314.1

Occurrence features of geothermal resources and geothermal potential assessment in Gansu Province

  • 1.

    Gansu Geological Survey Institute, Lanzhou 730000, Gansu, China

  • 2.

    Geological Environment Monitoring Institute of Gansu Province, Lanzhou 730050, Gansu, China

  • 3.

    Gansu Bureau of Geology and Mineral Resources Exploration and Development, Lanzhou 730000, Gansu, China

  • 4.

    College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, Gansu, China

  • Fund Project: Supported by China Geological Survey Project (No. 12120113077300)
More Information
    Author Bio: XIE Na, female, born in 1989, master, engineer, majors in geo- ecological environment; E- mail:xnddy1989@163.com .
    Corresponding author: DING Hongwei, male, born in 1963, senior engineer, majors in hydrogeology, engineering and environmental geology as well as geothermal geological survey; E-mail: zydhw8029@163.com

    摘要

  • 甘肃省地热资源丰富，其地热资源的开发利用具有较大的潜力。本文介绍了甘肃省地热资源分布概况，结合地区构造、地热水化学特征、地热资源量及开发利用现状探讨了甘肃隆起山地对流型与沉积盆地传导型地热资源的赋存特征，并对两种类型地热资源潜力进行了分析评价。结果表明，沉积盆地地热资源分布于河西、陇西及陇东盆地等，热储类型为裂隙型和孔隙型，热储层自元古宙至新生代均有发育，岩性以砂岩为主；隆起山地型地热资源主要分布于祁连山和西秦岭造山带，热储类型为断裂破碎带，岩性以花岗岩为主；通过潜力计算得知，全省热量开采系数≥0.4的仅占29.17%，表明目前甘肃地热资源开采程度较低，开采潜力较大。

    Gansu Province possesses rich geothermal resources,and the potential for geothermal resources development and utilization is great. In this paper,the distribution of geothermal resources in Gansu was presented,In combination with the regional geological structure,the chemical characteristics of geothermal water,and the current situation of development and utilization of geothermal resources,the authors investigated the occurrence characteristics of geothermal resources of sedimentation basin conduction type and apophysis mountain convective type,and estimated the potential of the two types of geothermal resources. The results show that sedimentation basin geothermal resources are distributed in Hexi,Longxi and Longdong basins,the thermal reservoirs are of pore-type and fissure-type,thermal reservoirs were developed from Proterozoic to Cenozoic,and the reservoirs are dominated by sandstone; the apophysis mountain geothermal resources are mainly distributed in Qilian Mountain and western Qinling orogenic belt,the thermal reservoir type is of fault ruptured zone,and the lithology mostly is granite. From the potential calculation of geothermal resource,the proportion of heat recovery coefficient of greater than 0.4 is simply 29.16% in Gansu,indicating that the geothermal resources in Gansu are in a low mining degree,and hence has great mining potential.

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  • 图 1  甘肃省已有地热勘查(调查)点平面分布图(截止2018年12月)

    Figure 1. 

    下载: 全尺寸图片 幻灯片

    图 2  甘肃省区域地温梯度等值线图

    Figure 2. 

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    图 3  热水样与区域大气降水线关系图

    Figure 3. 

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    图 4  甘肃省地热资源潜力分区图

    Figure 4. 

    下载: 全尺寸图片 幻灯片

    表 1  甘肃省地热流体水化学成分

    Table 1.  Water chemical compositions of geothermal waters in Gansu Province

    下载: 导出CSV

    表 2  甘肃省地热流体热量潜力模数计算

    Table 2.  calculation of potential modulus of geothermal waters in Gansu Province

    下载: 导出CSV

    表 3  热量开采系数分区

    Table 3.  Division table of heat recovery coefficient

    下载: 导出CSV
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收稿日期:  2020-03-24
修回日期:  2020-09-17
刊出日期:  2020-12-25

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