## 1 Introduction  
In water storage and energy storage reservoir projects, due to seasonal water level changes, pumping energy storage, and drainage power generation, the drainage channels and natural holes in the engineering rock mass will be subjected to a dry and wet cycle environment, and the influx of water will form dynamic loads. Owing to these issues, it is of great importance to study rock samples with different inner diameters after they are subjected to dry and wet cycles for excavation and maintenance in underground engineering. To this end, we specifically collated the relevant studies of many scholars on the effects of wet and dry cycles and ring rock specimens on rock dynamics. In the application of split-Hopkinson pressure bar (SHPB) technology, [PERSON] et al. [1] carried out SHPB impact compression tests on limestone specimens following high-temperature cycle treatment at room temperature (25 \({}^{\circ}\)C) and 100 \({}^{\circ}\)C-1000 \({}^{\circ}\)C. [PERSON] et al. [2] proved the feasibility of the finite-discrete element method to simulate the dynamic response of rock by using an SHPB test device in their study. [PERSON] et al. [3] carried out an SHPB impact compression test on reef limestone and analyzed the difference in dynamic mechanical properties between reef limestone and common rocks. [PERSON] et al. [4] found that for an SHPB test carried out on large-diameter samples, the choice of a pulse shaper with a diameter of 15-20 mm and a width of 2.5 mm would be more conducive to the smooth dynamic force of rock samples. [PERSON] et al. [5] used an SHPB to study the dynamic mechanical properties of sandstone under impact loads. [PERSON] et al. [6] used the SHPB test apparatus to measure the dynamic properties of various rocks at high strain rates. [PERSON] et al. [7] used an SHPB test device to explore the effect of bedding dip angle on the mechanical properties of and damage to composite rock mass. [PERSON] et al. [8] studied the mechanical properties of sandstone under uniaxial compression load by using the splitting SHPB test and modeling. [PERSON] et al. [9] verified a new calculation method for examining the dynamic splitting tensile strain rate of an SHPB through numerical calculations and experiments. [PERSON] et al. [10] studied the effect of porosity and density on the dynamic mechanics of carbonate rocks by using the SHPB test apparatus. [PERSON] et al. [11], in their research on rock subjected to wet-dry cycles or annular rock samples, used computed tomography, electron microscopy, and pore and crack analysis systems to study the microscopic changes of sandstone under the aforementioned wet and dry cycles. [PERSON] et al. [12] explored the damage process of red sandstone under the coupled action of dry and wet cycling and fatigue load from three aspects: deformation, energy, and damage, and explored the crack change rule of the sample. [PERSON] et al. [13] carried out static uniaxial tests and impact compression tests on rocks subjected to different dry and wet cycles to reveal the effects of these cycles on the dynamic and static mechanical properties of rocks with filled joints. [PERSON] et al. [14] used acoustic emission (AE) to detect the effects of wet and dry cycles on damage to argillaceous sandstone. [PERSON] et al. [15] carried out shear creep tests on gray shale after dry and wet cycles and analyzed the influence of the number of cycles on creep strain and cumulative creep strain. [PERSON] et al. [16] used a direct shear test and established a damage and deterioration model to analyze the deterioration rule of mica quartz schist caused by dry and wet cycles. [PERSON] et al. [17] revealed the influence of dry and wet cycling on the rock on a reservoir bank slope from three aspects: dynamic performance, energy dissipation rule, and crushing form, through the use of an SHPB test device. [PERSON] et al. [18] used the MTS815 rock mechanics test system to study carbon shales with different fracture angles after dry-wet cycles to reveal the changes in strength and energy.