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DOI | 10.1029/2018WR023199 |
Thermal Attenuation and Lag Time in Fractured Rock: Theory and Field Measurements From Joint Heat and Solute Tracer Tests | |
de La Bernardie, J.1; Bour, O.1; Le Borgne, T.1; Guiheneuf, N.1,2; Chatton, E.1; Labasque, T.1; Le Lay, H.1,3; Gerard, M. -F.1 | |
2018-12-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:12页码:10053-10075 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Canada |
英文摘要 | The modeling and prediction of heat transfer in fractured media is particularly challenging as hydraulic and transport properties depend on a multiscale structure that is difficult to resolve. In addition to advection and dispersion, heat transfer is also impacted by thermal attenuation and lag time, which results from fracture-matrix thermal exchanges. Here we derive analytical expressions for thermal lag time and attenuation coefficient in fractured media, which quantify the effect of fracture geometry on these key factors. We use the developed expressions to interpret the results of single-well thermal and solute tracer tests performed in a crystalline rock aquifer at the experimental site of Ploemeur (H+ observatory network). Thermal breakthrough was monitored with fiber-optic distributed temperature sensing (FO-DTS), which allows temperature monitoring at high spatial and temporal resolution. The observed thermal response departs from the conventional parallel plate fracture model but is consistent with a channel model representing highly channelized fracture flow. These findings, which point to a strong reduction of fracture-matrix exchange by flow channeling, show the impact of fracture geometry on heat recovery in geothermal systems. This study also highlights the advantages to conduct both thermal and solute tracer tests to infer fracture aperture and geometry. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000456949300003 |
WOS关键词 | DIPOLE-FLOW TEST ; GROUND-PENETRATING RADAR ; SINGLE-BOREHOLE ; CONTAMINANT TRANSPORT ; ENERGY-STORAGE ; PUSH-PULL ; TEMPERATURE ; AQUIFER ; BREAKTHROUGH ; INJECTION |
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/21319 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Rennes, CNRS, Geosci Rennes UMR 6118, Rennes, France; 2.Univ Guelph, Inst Groundwater Res G360, Coll Engn & Phys Sci, Guelph, ON, Canada; 3.Agrocampus Ouest INRA, UMR SAS, Rennes, France |
推荐引用方式 GB/T 7714 | de La Bernardie, J.,Bour, O.,Le Borgne, T.,et al. Thermal Attenuation and Lag Time in Fractured Rock: Theory and Field Measurements From Joint Heat and Solute Tracer Tests[J]. WATER RESOURCES RESEARCH,2018,54(12):10053-10075. |
APA | de La Bernardie, J..,Bour, O..,Le Borgne, T..,Guiheneuf, N..,Chatton, E..,...&Gerard, M. -F..(2018).Thermal Attenuation and Lag Time in Fractured Rock: Theory and Field Measurements From Joint Heat and Solute Tracer Tests.WATER RESOURCES RESEARCH,54(12),10053-10075. |
MLA | de La Bernardie, J.,et al."Thermal Attenuation and Lag Time in Fractured Rock: Theory and Field Measurements From Joint Heat and Solute Tracer Tests".WATER RESOURCES RESEARCH 54.12(2018):10053-10075. |
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