Fig. 20

Simplified scheme of processes occurring in the claystone in the near-field and far-field of the crack due to desaturation and resaturation. As also presented in the discussion of the hydraulic results, the area is divided into two zones: the seasonally influenced zone which is the near-field of the crack and the long-term influenced zone which is the far-field of the crack. The effects due to desaturation and resaturation are presented schematically for both zones. The resulting behaviour of the crack is pointed out