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.
