Study on the Influence of Sand Mining in the Channel of Sima Bend in Yangzhong of the Yangtze River

Abstract Taking the sand mining project in a local river section lower reaches of Yangtze River, as an example, this paper investigates complex effects on potential. Based MIKE21 software to establish two-dimensional water–sand mathematical model section, study change potential near after implementation different schemes through numerical simulation explore influence The results show that (1) except for slight changes area, there are no significant rest section. Under each calculation condition, mainstream line area is slightly rightward by about 5 m; (2) project, diversion ratio left branch Taiping Island increases, and corresponding right decreases, but very small, such increase inaugurated generally within 0.01% (3) water level overall performance congested. has small impact deep flood pattern will not significantly.