赣江下游中支网状河位于赣江现代三角洲平原上 ,它们具有重复分叉合并、快速加积、低坡降、低弯度等特点 ,其河道具有较高的侧向稳定性 ,并且发育天然堤、决口扇、废弃河道、河间漫滩、湖泊、沼泽和江心洲等地貌单元。网状河道的沉积物多以沙砾石和中细沙为主 ,概率累积曲线多为三段式 ,并以跳跃组分为主。砂体内部主要发育槽状交错层理。河道间其他地貌单元 (如河漫滩、湖泊和沼泽等 )以细粒沉积物为主。河口盆地的上升、三角洲地带水流的扩散、长江倒灌水流的顶托、坡降很低以及江心洲稳定等是赣江网状河形成的主要因素 The middle and middle meshed rivers in the lower reaches of the Ganjiang River are located in the modern delta plain of the Ganjiang River. They have the characteristics of repeated bifurcation and merging, rapid accretion, low gradient and low camber. The river channels have high lateral stability and develop natural Embankment, burst mouth fan, abandoned river, floodplain, lakes, swamps and river heart Island and other landscape units. Most of the sediments in the reticular channel are mainly gravel and medium-fine sand, and the cumulative probability curve is mostly of three-segment type with the main jumping component. Sandstone body is mainly developed inside the trough cross-bedding. Other landform units (such as river floodplains, lakes and swamps) are mainly fine-grained sediments. The rise of the estuarine basin, the diffusion of water flow in the Delta region, the top support of the Yangtze River inflow, the low slope and the stability of the river heart are the main factors for the formation of the Ganjiang Meshed River