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沙扒及其上游儒洞湾是一个有一定规模,比较稳定的河口湾型潮汐汊道,在波浪与潮流共同作用并以潮流为主的动力条件下,口门地区发育有潮流深槽、涨槽三角洲、水道边缘坝、拦门沙浅滩、边缘涨潮水道及内弯沙嘴等地貌类型。近年来,各种人类活动引起水文泥沙条件变化,导致东槽萎缩、西槽复苏、南槽转向、拦门沙东移并靠岸、港南沙嘴变低内移等现代演变过程。在港口现划与整治时必须对此充分考虑。
Sha Grilling and its upstream Jurong Bay is a certain size and relatively stable estuary tidal channel, in the wave and the tide of the current and power-driven conditions, the development of tidal current mouth trough, up Trough delta, watercourse edge dam, sand bar door sandbank, the edge of the tide channel and curved sand noodles and other landscape types. In recent years, various human activities have caused changes in hydrological and sediment conditions, resulting in the modern evolution of the east trough shrinkage, the west trough recovery, the southward trough diversion, the eastward movement of the sand bar and the shifting of the coast and the shift of the Hong Kong-Nansha Mouth into the lower one. In the port planning and remediation must take full account of this.