| 江西芦溪县南部大地热流特征 |
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| 关键词:Wugongshan area terrestrial heat flow radiogenic heat production rate thermal conductivity geothermal resources |
| 基金项目:中国地质调查局地质调查项目(编号: DD20221677-2);中央财政基本科研业务费项目(编号: JKY202004);江西省重点研发计划项目(编号: 20203BBG72W011);江西省地质局科技研究项目(编号: 2021AA07) |
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| Characteristics of Terrestrial Heat Flow in the South of Luxi County,Jiangxi Province |
| The southern region of Luxi County in Jiangxi Province is rich in geothermal resources. However, geothermal geological investigations in this area are lacking, and terrestrial heat flow measurements remain scarce. This lack of information hinders a thorough exploration and utilization of the local geothermal potential. This study focuses on the Xinquan and Shixi zones in the southern sector of Luxi County. By merging data from borehole core thermal property tests with geothermal well temperature recordings, the rock thermal conductivity, geothermal fields, and heat source dynamics are examined in the selected areas. The average rock thermal conductivity in the focus areas spans from 2.063 to 6.176 W/(m·K). Notably, siliceous quartzite demonstrates peak thermal conductivity, making it an optimal thermal conductor. The mean terrestrial heat flow was found to be 76.39 mW/m2, a figure that surpasses the mainland China average of 62.5 mW/m2, suggesting a relatively heightened thermal backdrop in the zone. The granite’s average radioactive heat production rate is 2.16 μW/m3, which excludes it from the category of high heat-producing stones. Radiogenic heat offers a nominal contribution to the surface heat flow, with the predominant heat source stemming from profound crustal heating. The researched region is geologically active, marked by primary and subsidiary fault lines that serve as robust thermal and water transmission routes for the deep circulation of subterranean hot water. The findings from this study can offer valuable perspectives for harnessing the geothermal resources in the Wugongshan area. |
| ZHANG Haoran,LIU Kai,ZHANG Yaoyao,SUN Wenjie,WANG Shuxun.2024.Characteristics of Terrestrial Heat Flow in the South of Luxi County,Jiangxi Province[J].Acta Geoscientica Sinica,45(1):25-37. |
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