葛洲坝枢纽工程兴建后,三江上引航道口门区出现斜流和回流,使汛期泥沙大量淤积在王家沟边滩。根据对两次冲沙资料的分析可知,冲沙也不能取得明显的效果。为此,每年汛末都必须对该河段进行疏浚,才能保证航道尺度。自1981～83年间,王家沟 After the construction of the Gezhouba Dam Project, diagonal flow and backflow occurred in the gateways of the upper navigation channel of the Sanjiang River, causing a large amount of sediment deposition in the flood season in the bank of the Wangjiagou River. According to the analysis of the two red sand information, red sand can not be achieved significant results. For this reason, the river must be dredged at the end of each year to ensure the waterway standard. From 1981 to 83 years, Wangjiagou