ABSTRACT

Based on data of test, curve between test time and shear creep strain of red sandstone was obtained, which was shown in Figure 4.

These conclusions can be obtained from analyzing of Figure 4.

In process of restrictive shear creep, the initial shear creep strain of red sandstone is much large, and addition of initial shear creep strain is shown in nonlinear property after the shear stress load was add the same value, nonlinear property of initial shear creep strain phase is the largest. It indicates that samples were much obviously affected in application process of shear creep load level, which has much close relationship with larger porosity of red sandstone.