Back to Search
Start Over
Theoretical relation between water flow rate in a vertical fracture and rock temperature in the surrounding massif
- Source :
- Earth and Planetary Science Letters, Earth and Planetary Science Letters, Elsevier, 2001, 194, pp.213-219
- Publication Year :
- 2001
- Publisher :
- HAL CCSD, 2001.
-
Abstract
- International audience; A steady-state analytical solution is given describing the temperature distribution in a homogeneous massif perturbed by cold water flow through a discrete vertical fracture. A relation is derived to express the flow rate in the fracture as a function of the temperature measured in the surrounding rock. These mathematical results can be useful for tunnel drilling as it approaches a vertical cold water bearing structure that induces a thermal anomaly in the surrounding massif. During the tunnel drilling, by monitoring this anomaly along the tunnel axis one can quantify the flow rate in the discontinuity ahead before intersecting the fracture. The cases of the Simplon, Mont Blanc and Gotthard tunnels (Alps) are handled with this approach which shows very good agreement between observed temperatures and the theoretical trend. The flow rates before drilling of the tunnel predicted with the theoretical solution are similar in the Mont Blanc and Simplon cases, as well as the flow rates observed during the drilling. However, the absence of information on hydraulic gradients (before and during drilling) and on fracture specific storage prevents direct predictions of discharge rates in the tunnel.
- Subjects :
- 010504 meteorology & atmospheric sciences
numerical analysis
Water flow
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph]
[SDE.MCG]Environmental Sciences/Global Changes
0207 environmental engineering
FOS: Physical sciences
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph]
02 engineering and technology
01 natural sciences
Physics::Geophysics
ground water
Physics - Geophysics
Discontinuity (geotechnical engineering)
Geochemistry and Petrology
Thermal
Earth and Planetary Sciences (miscellaneous)
[SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology
020701 environmental engineering
Petrology
Vertical fracture
0105 earth and related environmental sciences
geography
geography.geographical_feature_category
Specific storage
Alps
Drilling
temperature
Massif
mountains
fractures
Volumetric flow rate
Geophysics (physics.geo-ph)
tunnels
Geophysics
geothermal field
Space and Planetary Science
geothermy
Geology
Subjects
Details
- Language :
- English
- ISSN :
- 0012821X
- Database :
- OpenAIRE
- Journal :
- Earth and Planetary Science Letters, Earth and Planetary Science Letters, Elsevier, 2001, 194, pp.213-219
- Accession number :
- edsair.doi.dedup.....f014cef0f26212ae23d378ad2982ad8f