Recommendation of excavation method and support system based on engineering geology at Riam Kiwa Dam diversion tunnel, South Kalimantan, IndonesiaFadel Muhammad, I. Gde Budi Indrawan and Ferian AnggaraE3S Web of Conf., 479 (2024) 02006DOI: https://doi.org/10.1051/e3sconf/202447902006