康熙末年起,由于长江口北岸沙洲淤积加速,通州与崇明县之间的沙洲争端日益增多,对一贯以来的以江海防为重点的地方管理模式造成了极大的冲击。雍正年间,清廷在长江口设立太通道,第一次对沙务进行专门管理,并通过行政手段有效整肃了此时混乱的社会秩序。但由于太通道管理效力的弱化,该道存世不久即被裁撤,长江口沙务转由州县佐杂官接手。乾隆中期,又采用直隶厅的形式,将河口段涨沙统归于海门厅管辖,使得长期以来争议不断的通崇外沙具备了地方行政区的实质。 Since the end of the Kangxi period, the sand bank dispute between Tongzhou and Chongming County has been increasing due to the accelerated siltation in the sandbank at the north bank of the Yangtze River estuary. This has caused a great impact on the consistent local management mode focusing on Jianghai Defense. During the reign of Emperor Yongzheng, the Qing government set up a passage at the mouth of the Yangtze River. For the first time, it specialized management of the sanctuary and effectively ruined the chaotic social order through administrative measures. However, due to the weakening of the effectiveness of too-corridor management, the passage was abolished shortly after its release and was transferred to other government officials in the county. In the middle period of Qianlong, it adopted the form of Zhili Hall, which attributed to the jurisdiction of Haimen Hall, which made the controversy of Tong Chong Waisha have the substance of the local administrative areas.