Mayet de Montagne project : In-situ study of the forced percolation of water through a granitic medium
Since 1984, an in-situ experimental investigation on forced fluid percolation through a granitic rock mass has been carried out at Mayet en Montagne. The purpose of this experiment is to develop a method for circulating water between two wells, 800m deep, 100m apart, with a 60m3 injection flow rate. The vertical wells are air percussion drilled and, because the wells are uncased, inflatable packers are used. After establishing the morphology of the natural fracture pattern and determining the initial constraints and temperature fields, it appears that, during injections tests with a flow superior to 20m3, only a few hydraulic conductors play a significant role in the crumblings of the rock mass. Attention is then drawn to the development of the optimum thermal circulation and the investigation of hydro-thermo-mechanisms for the heat exchanger.
Bibliographic Reference: EUR 12856 FR (1990) 91 pp., MF, ECU 4
Record Number: 199010760 / Last updated on: 1994-12-01
Original language: fr
Available languages: fr