成果归属作者：

周训

成果归属机构：

水资源与环境学院

作者：

Wu, Yanqiu ; Zhou, Xun

单位：

China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing, Peoples R China;China Univ Geosci Beijing, Key Lab Groundwater Circulat & Environm Evolut, MOE, Beijing, Peoples R China

关键词：

SILICA CONCENTRATION; DISSOLVED SILICA; GROUNDWATER; TEMPERATURE; COMPONENTS; MECHANISM; RATES; PH

摘要：

The content of metasilicic acid in geothermal water is usually high. In this paper, the hydrochemical composition of hot springs and geothermal wells from different lithologic aquifers was studied by End-member mixing analysis, and the source and influencing factors of the H 2 SiO 3 concentration in geothermal water were revealed. The results show that the H 2 SiO 3 concentration in geothermal water is almost independent of the lithology of the surrounding rock at surface of hot springs and geothermal wells. Temperature is an important control factor in the H 2 SiO 3 concentration of hot springs and geothermal well waters. The metasilicic acid in geothermal water mainly comes from the geothermal source water, and the mixing of a large proportion of cold water will dilute the metasilicic acid, resulting in a relatively large variation in hot springs and geothermal well waters. The mixing process evaluation gives a good overview of the fluid flow (reservoir temperature and circulation depth) within the region.

基金：

National Natural Science Foundation of China [42172269, 41772261, 41572223]

语种：

英文

DOI：

10.1016/j.geothermics.2024.103098

来源：

GEOTHERMICS,2024():.

出版日期：

2024-11

提交日期：

2024-07-23

引用参考：

Wu, Yanqiu; Zhou, Xun. Source and influencing factors of metasilicic acid in mixed geothermal waters[J]. GEOTHERMICS,2024():.