The Application of Three-Dimensional High-Density Electrical Method in Detecting Vertical HDPE Membranes at Landfill SitesChenglong Sun, Changxin Nai, Yuan Li and Jingcai LiuE3S Web of Conf., 536 (2024) 03026DOI: https://doi.org/10.1051/e3sconf/202453603026