Study on the genetic mechanism of high-temperature geothermal system and its engineering impact in the Woka graben, Tibet
The geothermal resource has become the significant constitution of renewable and clean energies in the world. This study focuses on the genetic mechanism of a high-temperature geothermal system and its engineering impact in the Woka graben, southern Tibet, via hydrochemical and isotopic analyses. Th...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2022-08-01
|
| Series: | Frontiers in Earth Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2022.895884/full |
| _version_ | 1828286403279060992 |
|---|---|
| author | Wen Zhang Wen Zhang Mo Xu Sen Wu |
| author_facet | Wen Zhang Wen Zhang Mo Xu Sen Wu |
| author_sort | Wen Zhang |
| collection | DOAJ |
| description | The geothermal resource has become the significant constitution of renewable and clean energies in the world. This study focuses on the genetic mechanism of a high-temperature geothermal system and its engineering impact in the Woka graben, southern Tibet, via hydrochemical and isotopic analyses. The hydrochemical types are mainly SO4-Na type, SO4-Cl-Na type, and HCO3-SO4-Na type. Geothermal water is characterized as medium to alkaline affinity with low total dissolved solids. D-O isotopes indicate that geothermal water is recharged by atmospheric precipitation at the elevation of 5193–5247 m. Na-K-Mg equilibrium diagram shows partial equilibrium or mixed water, and the proportion of cold water mixing is 73–83%. The temperature ranges of shallow and deep geothermal reservoirs are from 96.85°C to 119.57°C and from 120°C to 200°C, respectively. Geothermal water is heated by melting crust and controlled by deep faults. For major construction projects in the Woka graben, detailed investigation and demonstration should be conducted to avoid the geothermal water channel as much as possible, or to divert the geothermal water and reasonably arrange the construction sequence to overcome the problem. |
| first_indexed | 2024-04-13T09:31:54Z |
| format | Article |
| id | doaj.art-27937c01fd884f48b9a1f83d1b9442d0 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-13T09:31:54Z |
| publishDate | 2022-08-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-27937c01fd884f48b9a1f83d1b9442d02022-12-22T02:52:13ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632022-08-011010.3389/feart.2022.895884895884Study on the genetic mechanism of high-temperature geothermal system and its engineering impact in the Woka graben, TibetWen Zhang0Wen Zhang1Mo Xu2Sen Wu3Chengdu University of Technology, Chengdu, Sichuan, ChinaInstitute of Exploration Technology, Chinese Academy of Geological Sciences, Chengdu, Sichuan, ChinaChengdu University of Technology, Chengdu, Sichuan, ChinaSichuan Institute of Geological Engineering Investigation Group Co. Ltd., Chengdu, Sichuan, ChinaThe geothermal resource has become the significant constitution of renewable and clean energies in the world. This study focuses on the genetic mechanism of a high-temperature geothermal system and its engineering impact in the Woka graben, southern Tibet, via hydrochemical and isotopic analyses. The hydrochemical types are mainly SO4-Na type, SO4-Cl-Na type, and HCO3-SO4-Na type. Geothermal water is characterized as medium to alkaline affinity with low total dissolved solids. D-O isotopes indicate that geothermal water is recharged by atmospheric precipitation at the elevation of 5193–5247 m. Na-K-Mg equilibrium diagram shows partial equilibrium or mixed water, and the proportion of cold water mixing is 73–83%. The temperature ranges of shallow and deep geothermal reservoirs are from 96.85°C to 119.57°C and from 120°C to 200°C, respectively. Geothermal water is heated by melting crust and controlled by deep faults. For major construction projects in the Woka graben, detailed investigation and demonstration should be conducted to avoid the geothermal water channel as much as possible, or to divert the geothermal water and reasonably arrange the construction sequence to overcome the problem.https://www.frontiersin.org/articles/10.3389/feart.2022.895884/fullformation mechanismhigh-temperature geothermal systemhydrochemical characteristicsD-O-C isotopesengineering influence |
| spellingShingle | Wen Zhang Wen Zhang Mo Xu Sen Wu Study on the genetic mechanism of high-temperature geothermal system and its engineering impact in the Woka graben, Tibet Frontiers in Earth Science formation mechanism high-temperature geothermal system hydrochemical characteristics D-O-C isotopes engineering influence |
| title | Study on the genetic mechanism of high-temperature geothermal system and its engineering impact in the Woka graben, Tibet |
| title_full | Study on the genetic mechanism of high-temperature geothermal system and its engineering impact in the Woka graben, Tibet |
| title_fullStr | Study on the genetic mechanism of high-temperature geothermal system and its engineering impact in the Woka graben, Tibet |
| title_full_unstemmed | Study on the genetic mechanism of high-temperature geothermal system and its engineering impact in the Woka graben, Tibet |
| title_short | Study on the genetic mechanism of high-temperature geothermal system and its engineering impact in the Woka graben, Tibet |
| title_sort | study on the genetic mechanism of high temperature geothermal system and its engineering impact in the woka graben tibet |
| topic | formation mechanism high-temperature geothermal system hydrochemical characteristics D-O-C isotopes engineering influence |
| url | https://www.frontiersin.org/articles/10.3389/feart.2022.895884/full |
| work_keys_str_mv | AT wenzhang studyonthegeneticmechanismofhightemperaturegeothermalsystemanditsengineeringimpactinthewokagrabentibet AT wenzhang studyonthegeneticmechanismofhightemperaturegeothermalsystemanditsengineeringimpactinthewokagrabentibet AT moxu studyonthegeneticmechanismofhightemperaturegeothermalsystemanditsengineeringimpactinthewokagrabentibet AT senwu studyonthegeneticmechanismofhightemperaturegeothermalsystemanditsengineeringimpactinthewokagrabentibet |