Micro crack evolution and failure modes of limestone under uniaxial multi- level cyclic loading: Insights from numerical simulation Yanjun Yin School of Resources and Safety Engineering,Central South University Jianhua Hu ( [email protected] ) Zijin School of Geology and Mining,Fuzhou University Guanping Wen School of Resources and Safety Engineering,Central South University Xiao Xu School of Resources and Safety Engineering,Central South University Pingping Zeng School of Resources and Safety Engineering,Central South University Article Keywords: PFC2D, Multi-level cyclic loading, Crack evolution, Displacement ヲeld, Failure modes Posted Date: December 30th, 2022 DOI: https://doi.org/10.21203/rs.3.rs-2409117/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Additional Declarations: No competing interests reported.