Stress Measurements - Rock Mechanics Based on an Anisotropic Jointed Rock Model - page 512

possible via cable. These cells are more stable against breakage of the overcore than cells
of the CSIR type since the hollow plastic cylinder reinforces the wall of the pilot hole.
Figure 16.3 Stress tensor tube (STT) developed by Rocha et al. (1974)
Figure 16.4 Hollow
inclusion (HI) CSIRO cell
(Worotnicki 1993)