Method for acquiring physical equivalent strength of heterogeneous rock under strong impact load

The invention belongs to a physical equivalent strength obtaining method, and aims to solve the technical problem that a construction method and a construction process cannot be accurately designed according to actual conditions of rocks when the rocks are constructed due to the lack of a method for reasonably equivalently carrying out an actual rock medium at present. According to the method for obtaining the physical equivalent strength of the heterogeneous rock under the strong impact load, the coupled elastic energy and physical equivalent strength of the low-strength heterogeneous rock under the action of the strong load are calculated by introducing a strength equivalent factor related to the elastic energy, and the problem that the physical equivalent strength of the low-strength heterogeneous rock under the complex medium condition cannot be obtained is solved. And when the low-strength rock is subjected to a strong impact load, the coupling elastic energy and the physical equivalent strength are diff