Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR023579 |
Reactive Transport Modeling of Swelling Processes in Clay-sulfate Rocks | |
Schweizer, Daniel1; Prommer, Henning2,3,4; Blum, Philipp1; Siade, Adam J.2,3,4; Butscher, Christoph5 | |
2018-09-01 | |
发表期刊 | WATER RESOURCES RESEARCH
![]() |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:9页码:6543-6565 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Australia |
英文摘要 | Swelling of clay-sulfate rocks often causes large problems in geotechnical applications such as tunneling. The primary mechanism inducing the increase in rock volume is the chemical transformation of anhydrite to gypsum, which is triggered by the ingress of groundwater. In the present study, a novel conceptual and numerical modeling approach is developed that emphasizes the effect of groundwater flow in conjunction with the associated availability of water and changing geochemical conditions on the chemical transformation of anhydrite to gypsum. A reactive transport model was developed and hydraulic, reactive, and solute transport as well as mechanical model parameters were estimated through an inversion process, constrained by geodetic ground heave measurements from a study site in Staufen, Germany. The conceptual model of the swelling process was implemented numerically through a dual-domain modeling approach, whereby the mobile domain accounts for solute transport along discontinuities, and the immobile reactive domain represents the matrix. A mass transfer process accounts for diffusive and/or capillary water transport into the matrix, where the rate-limited transformation of anhydrite to gypsum takes place. The model calculates heave at the land surface depending on water inflow, the transformation of anhydrite into gypsum and the local stress conditions exerted by overburden pressure. The results show that the proposed reactive transport modeling approach is suitable to quantify the observed swelling-induced heave at the study site with a plausible parameterization. The study also highlights that diffusion is a decisive factor for the effective rate of anhydrite dissolution and, therefore, the overall chemical transformation process. |
英文关键词 | clay-sulfate rocks swelling reactive transport numerical model anhydrite |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000448088100040 |
WOS关键词 | CALCIUM-SULFATE ; DISSOLUTION RATES ; GYPSUM ; ANHYDRITE ; KINETICS ; DIHYDRATE ; GROWTH ; WATER ; CRYSTALLIZATION ; TEMPERATURE |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21285 |
专题 | 资源环境科学 |
作者单位 | 1.Karlsruhe Inst Technol, Inst Appl Geosci, Karlsruhe, Germany; 2.Univ Western Australia, Sch Earth & Environm, Perth, WA, Australia; 3.CSIRO Land & Water, Wembley, WA, Australia; 4.Natl Ctr Groundwater Res & Training, Adelaide, SA, Australia; 5.TU Bergakad Freiberg, Inst Geotech, Freiberg, Germany |
推荐引用方式 GB/T 7714 | Schweizer, Daniel,Prommer, Henning,Blum, Philipp,et al. Reactive Transport Modeling of Swelling Processes in Clay-sulfate Rocks[J]. WATER RESOURCES RESEARCH,2018,54(9):6543-6565. |
APA | Schweizer, Daniel,Prommer, Henning,Blum, Philipp,Siade, Adam J.,&Butscher, Christoph.(2018).Reactive Transport Modeling of Swelling Processes in Clay-sulfate Rocks.WATER RESOURCES RESEARCH,54(9),6543-6565. |
MLA | Schweizer, Daniel,et al."Reactive Transport Modeling of Swelling Processes in Clay-sulfate Rocks".WATER RESOURCES RESEARCH 54.9(2018):6543-6565. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论