Experimental study on dynamic impact energy propagation and attenuation of fracture carbonate rocks
The dynamic mechanical behavior of carbonate rock, the attenuation characteristics of stress wave and the change process of stress and strain in the direction of impact loading are investigated by using SHPB experimental device or light gas gun loading device. The new explosive loading technology is studied, the loading fixing device is built, the plane shock wave is generated by water environment loading simulation, the quantity and explosion height of explosive and the boundary of water area are adjusted to change the loading conditions, the dynamic loading experiment of fracture carbonate rock is carried out and the experimental data of stress wave propagation and attenuation can be measured.
Experiment of dynamic impact energy propagation and attenuation of fracture-hole carbonate rocks
By using high energy explosive as loading source, plane shock wave and air explosion are used to simulate the dynamic loading experiment of approximate spherical wave to fracture-hole carbonate rock by using water environment simulation, and the experimental data of propagation and attenuation in fracture-hole carbonate rock are measured, the cracking process and fracture propagation process of fracture-hole carbonate rock under dynamic loading are measured by high-speed photography.
Theoretical analysis of dynamic impact energy propagation and attenuation of fracture and fracture-hole carbonate rocks
Based on the experimental data of fracture and fracture-hole carbonate rock in dynamic experiment, the law of impact energy attenuation is analyzed, and the characterization method of predicting explosion impact energy attenuation characteristics of carbonate rock is established based on theoretical analysis.