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| Analysis of geothermal geological conditions and resources exploitation potential in Lanzhou City |
| WEI Linsen, ZHANG Linpeng, WANG Ting, LI Li |
| The Second Institute of Geology and Mineral Exploration, Gansu Provincial Bureau of Geology and Mineral Resourse, Lanzhou, 730020 China |
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Abstract Lanzhou City is located in Mesozoic faulted basin of the eastern Minhe-Lanzhou depression basin. Due to the thick sedimentary rocks and the well developed faults from multi-period tectonic movements in the basin, this area is in favorable condition for geothermal water formation. Through exploration confirmation, the geothermal resources of Lanzhou City are the sedimentary basin type of middle-low temperature (60 to 90 ℃). The distribution of the geothermal resources of about 530 km2 is mainly controlled by two deep faults in the north and south of the basin. According to the partition of the geological structure units, the authors have evaluated geothermal resources exploitation potential of the three blocks in the east, the middle and the west of the city. The results show that the productivities of the geothermal fields in the three blocks are 17.91 MW, 117.46 MW and 23.49 MW respectively. So these fields can be regarded as the middle-large scale geothermal fields, with better prospects for development and utilization.
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Received: 22 December 2017
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[1] 周阳,邓念东,王凤,等.浅层地热能适宜性分区结构的分形原理[J].中国地质调查,2017,4(1):18-23.
[2] 白福,马根喜.兰州地热资源赋存特征浅析[J].水文地质工程地质,2005,32(6):3-5.
[3] 魏林森,张凌鹏,王婷,等.甘肃省兰州市城区地热资源勘查报告[R].兰州:甘肃省地矿局第二地质矿产勘查院,2016.
[4] 王佟,王莹.陕西渭河盆地地热资源赋存特征研究[J].西安科技学院学报,2004,24(1):82-85.
[5] 董忠萍. 河西走廊地下热水资源成因分析[J].资源环境与工程,2013,27(4):455-460.
[6] 周总瑛,刘世良,刘金侠.中国地热资源特点与发展对策[J].自然资源学报,2015,30(7):1210-1221.
[7] 牛树银,孙爱群,李红阳.华北地区地热特征及其成因机制[J].地学前缘,2001,8(1):112. |
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2018, Vol. 5 
