Research on Design and Operation Method of Dewater and Filled System for Cushion Pool of High Dams ——Taking the project of BHT hydropower plant in China as an exampleFang Jie, Cao Chunjian and Li ShengbingE3S Web Conf., 248 (2021) 03066DOI: https://doi.org/10.1051/e3sconf/202124803066