dilatometro reversible for in situ measurement of the characteristics of swelling and deformation of rocks to keep.

摘要

dilatometro reversible for the measurement of the characteristics of swelling and deformation of rocks, formed by a tubular probe (2).at least a pair of obturator membrane bodies (12, 14) circondanti body (4) of the probe (2) and intended to be filled with water under pressure and a measuring cell (24) membrane.circondante body (4) of the probe (2) which is associated with a pressure transducer (32) and a plurality of displacement transducers (34).water is fed in the space between the obturator (12.14) and the measuring cell (24) to cause swelling of the soft rock and measuring the radial displacement of the wall membrane of the cell (24) caused by the swelling of the rock.the instrument can be used as dilatometro, applying a uniform pressure to the coring hole and measuring the radial deformation.or how dilatometro inverse (contrattometro) to measure the swelling of the rock around the borehole core (fig. 1).