Experimental Investigations on Rheological Properties of Mudstone in Kilometer-Deep Mine

Figure 9

Unloading confining pressure with axial compression triaxial test results of mudstone. (a) Change of axial strain with time. (b) Isochronous curves of axial strain. (c) Change of lateral strain with time. (d) Isochronous curves of lateral strain.

(a)

(b)

(c)

(d)