Study on large deformation characteristics and control technology of tunnel surrounding rock in debris flow accumulation areaMu-shui Lin, Cheng-ke Zhang, Rong-jun Wu, Fu-sheng Qiu, Ning Li, Li Chen and Hao-sen GuoE3S Web Conf., 233 (2021) 03004DOI: https://doi.org/10.1051/e3sconf/202123303004