Abstract: By laboratory test and theoretical analysis, the rheological properties of anchored rock and controlling mechanism by anchor are studied. The results show that, non-anchored and anchored specimens’ indoor long-time (above 100 h) creep test is done by RLJW-2000 rheology tester; creep stress threshold of anchored rock is increased by about 30%?c; creep deformations at different stress level stages are significantly controlled; and anchored specimen’s long-term intensity is increased by 5% to 10%?c. In addition, according to the equivalent co-deformation principle, one-dimensional creep constitutive equation of anchored rock is established; the answer of anchored generalized Kelvin (B-K) model is derived. The example shows that rock rheology’s control effect gets better with increasing of bolt consistency, which can be obtained that the anchor’s equivalent stiffness is a dominant factor restraining rock rheology. But from the view of economic technology, bolt consistency and rock rheological parameters have a rational matching interval. The result provides a theoretical basis for the anchorage support design of rock engineering after long-term service.

Key words: anchored rock, rheological property, constitutive model, anchoring mechanism