Research on the in-situ stress inversion method of mine based on GA-BP algorithm

In-situ stress is the basis for designing mine roadway supports. Firstly, based on GA-BP algorithm, establish a numerical analysis model, apply orthogonal tests, to relationships between in-situ and lateral pressure coefficient, different rock parameters. Then, optimization model built by setting sum of squares difference measured calculated stresses as targets. Finally, using solve stress. Results show that relative error GABP algorithm inversion results values 2.9% averagely, while BP 4.4% averagely. Inversion methods can provide reference similar inversion.