A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Thermal response testing of a fractured hard rock aquifer with and without induced groundwater flow
Abstract This study quantifies experimentally the influence of groundwater on the thermal conductivity measurements via thermal response tests (TRT) in a fractured hard rock with low matrix permeability. An artificial groundwater flow towards a nearby well was induced by groundwater extraction and a TRT performed simultaneously. The results were compared with a TRT performed 24 days later in the same well without groundwater extraction. The effect of the groundwater flow is shown indirectly by the enhanced effective thermal conductivity and directly through the comparison of temperature profiles before and 4 h after both TRTs. Simulations in FEFLOW show that a groundwater flow velocity of 130–1,300 m $ d^{−1} $ through one open horizontal fracture of small volume increases the effective thermal conductivity by 11 % in the studied system.
Thermal response testing of a fractured hard rock aquifer with and without induced groundwater flow
Abstract This study quantifies experimentally the influence of groundwater on the thermal conductivity measurements via thermal response tests (TRT) in a fractured hard rock with low matrix permeability. An artificial groundwater flow towards a nearby well was induced by groundwater extraction and a TRT performed simultaneously. The results were compared with a TRT performed 24 days later in the same well without groundwater extraction. The effect of the groundwater flow is shown indirectly by the enhanced effective thermal conductivity and directly through the comparison of temperature profiles before and 4 h after both TRTs. Simulations in FEFLOW show that a groundwater flow velocity of 130–1,300 m $ d^{−1} $ through one open horizontal fracture of small volume increases the effective thermal conductivity by 11 % in the studied system.
Thermal response testing of a fractured hard rock aquifer with and without induced groundwater flow
Liebel, Heiko T. (author) / Huber, Kilian (author) / Frengstad, Bjørn S. (author) / Ramstad, Randi K. (author) / Brattli, Bjørge (author)
2012
Article (Journal)
English
Thermal response testing of a fractured hard rock aquifer with and without induced groundwater flow
| Online Contents | 2012
Groundwater Flow Modeling of a Hard Rock Aquifer: Case Study
| British Library Online Contents | 2014
Groundwater Flow Modeling of a Hard Rock Aquifer: Case Study
| Online Contents | 2014
EFFECTS OF GLACIATION ON GROUNDWATER FLOW IN DISCRETELY FRACTURED CRYSTALLINE ROCK
| British Library Conference Proceedings | 2007