Therefore , to clearly know about development of the river and choose the suitable bridge location is key link for constructing yili river super major bridge in sandaohezhi sub 因此，对宽浅游荡性河道的演变有了明确的分析认识并选择合适的桥位，将是三道河子伊犁河特大桥修建成功与否的关键所在。
2.
The loess covering on the northern slop of tian shan mountains derives from the desert in junggar basin but the loess depositing in iii basin may come from the desert of central aisa and the lower reach of iii river 天山北坡黄土物质主要来源于其北部的准噶尔盆地中的沙漠，伊犁盆地黄土粉尘则来自中亚荒漠和伊犁河下游沙漠地区。
3.
Because the yili river belongs to plain broad and shallow moving river , the main channel changes greatly and swings to a large range , which leads to river crooked branching river type and s curved , many fork rivers , the river continent and the river beach in river center , alluvial shoal and beach . the width in some section of the river is up to about 3800m . in flood season it causes serious harm to farmland , factories , residents along two sides 由于伊犁河属于平原游荡性宽浅河流，主槽变化不定，摆动幅度极大，河道多呈弯曲分叉河型和s型弯道、多叉河、河心洲，河心滩和冲击浅滩及边滩，部分河段河床宽度达3800m ，洪水季节对河道两岸的田地，工厂，居民等造成极大的危害，素有“三十年河东，三十年河西”之称。
