Numerical modelling of TER Results obtained by UPC 9 th TER Technical Discussion, 17 th of June 2008, Chatenay-Malabry, France Dept. of Geotechnical Engineering.

Apresentação em tema: "Numerical modelling of TER Results obtained by UPC 9 th TER Technical Discussion, 17 th of June 2008, Chatenay-Malabry, France Dept. of Geotechnical Engineering."— Transcrição da apresentação:

1 Numerical modelling of TER Results obtained by UPC 9 th TER Technical Discussion, 17 th of June 2008, Chatenay-Malabry, France Dept. of Geotechnical Engineering and Geosciences TECHNICAL UNIVERSITY OF CATALONIA (UPC)

2  Latest update of the 2D THM simulation: pore water pressure measurements  Latest update of the 3D T simulation against measurements  Influence of gallery temperature Points for discussion

3 2D THM 2.6 MPa 13.7MPa2.6MPa 13.7MPa 22ºC q w =0 q h =0 2.6MPa22ºC q h =0 u=0 qhqh 23.4 m 9.4 m 12.7 m Model used for the computations of the 2D THM backanalysis Simple model: isotropic (conductivity, permeability, rigidity) no gallery temperature

4 Difference map of the pore pressure field Difference map of the deformation field 2D THM -log (α T ) -log (k w ) k w =3.16 E-20 α T =5 E-6

5 2D THM PREDICTION BACK- ANALYSIS

6 2D THM PREDICTION BACK- ANALYSIS

7 2D THM PREDICTION BACK- ANALYSIS

8 2D THM PREDICTION BACK- ANALYSIS

9 2D THM PREDICTION BACK- ANALYSIS

10 TER experiment: 3D T  Site geometry  Horizontal bedding planes

11 TER experiment: 3D T  Boundary conditions Applied power Seasonal temperature changes in the galleries  T ini = 21.5ºC Measurements have high variability λ // [W/m/K] = 2 λ ┴ [W/m/K] = 1

12 TER experiment: 3D T TER1201TEM2

13 TER experiment: 3D T TER1201TEM1

14 TER experiment: 3D T TER1201TEM3

15 TER experiment: 3D T TER1201TEM4

16 TER experiment: 3D T TER1201TEM5

17 TER experiment: 3D T TER1201TEM5

18 TER experiment: 3D T TER1202TEM1

19 TER experiment: 3D T TER1202TEM2

20 TER experiment: 3D T TER1202TEM3

21 TER experiment: 3D T TER1202TEM4

22 TER experiment: 3D T TER1202TEM5

23 TER experiment: 3D T TER1203TEM1

24 TER experiment: 3D T TER1203TEM2

25 TER experiment: 3D T TER1203TEM3

26 TER experiment: 3D T TER1203TEM3

27 TER experiment: 3D T TER1203TEM3

28 TER experiment: 3D T TER1203TEM4

29 TER experiment: 3D T TER1203TEM5

30 TER experiment: 3D T TER1401TEM1

31 TER experiment: 3D T TER1401TEM2

32 TER experiment: 3D T TER1401TEM2

33 TER experiment: 3D T TER1401TEM3

34 TER experiment: 3D T TER1401TEM4

35 TER experiment: 3D T TER1401TEM5

36 Conclusions  The non homogeneous seasonal temperature variation in the gallery has a non negligible influence. It is important to keep the sensors in place after dismantling.  Keeping heating during some months is attractive to investigate the possible influence of the recent low gallery temperature.  Backanalysis when more info available about skin temperature and temperature distribution  Application of short cycles