Experimental study on compression mechanical characteristics of filled rock joints after multiple pre-impacts.

ABSTRACT: The prefabricated artificial filled jointed rock specimens are impacted by a self-made drop hammer impact device for many times, and the specimens with different degrees of cumulative damage characteristics are obtained. Then, the static and dynamic compression mechanical properties are studied by using universal testing machine and SHPB device. Through the static compression test, the strength and deformation characteristics of jointed rock specimens after multiple impacts are obtained, and the influence of the damage degree of jointed rock specimens characterized by wave velocity on the compressive strength of filled joints is analysed. Based on the results of SHPB impact test, the dynamic strength and deformation evolution, wave propagation law and energy dissipation law of filled joint

SUBMITTER: Chai S 

PROVIDER: S-EPMC9365792 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature