Abstract: Stress relaxation is one of the common rheological characteristics of rock and soil materials. The stress relaxation has important effect on the longterm stability of underground structures. In this paper, the stress relaxation phenomenon is studied as a separate research object. Throughout the shear stress relaxation test of regular discontinuities, the mechanical features of the structural planes are examined. The test results are simulated with Burgers model to reflect the stress relaxation characteristics of regular rock mass discontinuities.

Key words: Rock Mechanics, Rock Mass Discontinuity, Stress Relaxation, Data Fitting