Modelling hydraulic mixture movement along the extraction chamber bottom in case of hydraulic washout of the tuff-stoneZinovii Malanchuk, Viktor Moshynskyi, Petro Martyniuk, Sergii Stets and Daniyar GaliyevE3S Web Conf., 201 (2020) 01011DOI: https://doi.org/10.1051/e3sconf/202020101011