Study on reasonable grouting parameters based on UDEC numerical simulationFengfeng Yang, Liping Bai, Ruiqing Su, Jufeng Zhang, Tai Xu, Chao Zheng, Xiulan Zhu and Jing ChenE3S Web Conf., 118 (2019) 02013DOI: https://doi.org/10.1051/e3sconf/201911802013