Evaluation of Characteristics and Reserves of Geothermal Resources in the Xujiadong Area, Chenzhou City

HE Yang; YANG Gui-Hua; LI Xue-Yu; ZHOU Jin; TAN Jia-Liang; LIU Sheng-Kai; JING Ying-Li; XIONG Xiong; LIU Yi-Ming; FAN Yi; Chen Shuai-Qi

doi:10.3969/j.issn.2097-0013.2024.01.009

2024 Vol. 40, No. 1

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Article navigation > South China Geology > 2024 > 40(1): 133-142

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HE Yang, YANG Gui-Hua, LI Xue-Yu, ZHOU Jin, TAN Jia-Liang, LIU Sheng-Kai, JING Ying-Li, XIONG Xiong, LIU Yi-Ming, FAN Yi, Chen Shuai-Qi. 2024. Evaluation of Characteristics and Reserves of Geothermal Resources in the Xujiadong Area, Chenzhou City. South China Geology, 40(1): 133-142. doi: 10.3969/j.issn.2097-0013.2024.01.009

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HE Yang, YANG Gui-Hua, LI Xue-Yu, ZHOU Jin, TAN Jia-Liang, LIU Sheng-Kai, JING Ying-Li, XIONG Xiong, LIU Yi-Ming, FAN Yi, Chen Shuai-Qi. 2024. Evaluation of Characteristics and Reserves of Geothermal Resources in the Xujiadong Area, Chenzhou City. South China Geology, 40(1): 133-142. doi: 10.3969/j.issn.2097-0013.2024.01.009

Evaluation of Characteristics and Reserves of Geothermal Resources in the Xujiadong Area, Chenzhou City

1. Geological Survey Institute of Hunan Province, Changsha 410116, Hunan, China
2. Survey and Monitoring Institute of Hydrogeology and Environmental Geology of Hunan Province, Changsha 410129, Hunan, China

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Corresponding author: YANG Gui-Hua

Received Date: 17 November 2023

Revised Date: 01 February 2024

Abstract

Abstract

In order to find out the characteristics and reserves of geothermal water resources in Chenzhou City, two typical geothermal fields in the Xujiadong area were selected, and their geological conditions, characteristics of geothermal fluid field, and hydro-chemical types of geothermal water were also investigated by means of geothermal geological survey and water quality test. Based on the above research, an analysis and evaluation of geothermal resource reserves in this study area was conducted. The results show that: (1) The geothermal water is controlled by fault structure and is formed by the infiltrated groundwater absorbing heat energy from buried rock mass during deep circulation along fault structure. (2) The main hydro-chemical types are HCO₃-Ca type, HCO₃-Ca·Na type or HCO₃·SO₄-Ca·Mg type, and the geothermal water is low-temperature, colorless and transparent weakly alkaline water. (3) The main supply source of geothermal water is atmospheric precipitation. After water infiltration, it migrated to a certain depth along the developed NE fault structure (F₂₄, F₇, F₂₅, F₈), and during this process, it absorbed heat energy and gradually warms to form hot water. Afterwards it migrated upwards along the unevenly developed karst fissure system at faults intersection, and finally emerged on the surface as hot springs. (4) The geothermal water can provide about 3.23×10₈ MJ of thermal energy annually in this research area, which can save about 1.18×10₄ t of standard coal resources per year. The research results are important for guiding the rational development and utilization of geothermal resources in Chenzhou City.
- geothermal water /
- flow field characteristics /
- water chemical characteristics /
- calculation of geothermal resources /
- evaluation of geothermal resources

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