In-situ rock tests for fault gouge zone:A case in Fengman hydropower station, ChinaXinchuan Xu, Zhaoyue Yu, Fangfang Xue, Xiaogang Long, Xinyu Mao, Changyan Ke, Yuefei Wang and Huanyu MengE3S Web Conf., 293 (2021) 03008DOI: https://doi.org/10.1051/e3sconf/202129303008