A method was described in detail for testing consolidation deformation due to pore water pressure of coal samples under triaxial stress- The test conclusions show that the consolidation deformation varies respectively with the volumetric stress and pore water pressure in negative and positive exponential curves.

In recent decades,people have conducted extensive researches on the impact of stress on rock permeability at home and abroad,in terms of equivalent homogeneous rock,and the results show the effect of axial stress,lateral pressure and volumetric stress.

This paper describes the fundamental theory Of controlled fracturing technique forrockmass stress measurement,the equipment employed and the test procedure,Some resultsobtained from modelling experiment of controlled fracturing and their analysis are presented,Thevalidity of controlled fracturing theory is proved.