Study on the effect of samplers on the disturbance of dredger-filled soil structure by numerical simulation layering methodZhijie Li, Jing Song, Zhou Zhao, Shouying Yang, Jiansen Huang and Weibiao HuangE3S Web Conf., 131 (2019) 01060DOI: https://doi.org/10.1051/e3sconf/201913101060