Study on Characteristics of Water Flow Under Different Riverbed Structures in River Narrowing SectionChengcheng Wu, Xiaolu Zhang, Zhetao Zheng, Juntao Xie, Ziwei Wang, Lijian Qi and Jidong LiMATEC Web Conf., 246 (2018) 02044DOI: https://doi.org/10.1051/matecconf/201824602044