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穿黄河段地处黄河游荡性河段,河势演变复杂,为使穿黄工程技术上安全可靠,对穿黄河段河床演变进行了研究。通过实测资料对比分析,认为穿黄工程所在河段的河床演变,主要受上游来水来沙条件及本河段河床边界条件的影响。在上游水库及河势控导工程修建后,该段河床演变特点主要表现为主流摆幅减小,流路逐渐规顺,在孤柏嘴一带,河势较稳定,主流变幅已减至600m左右,是穿黄工程良好的比选河段。同时还研究了大洪水时主槽宽度和过流情况,在此基础上,认为穿黄河段河宽缩窄到2.8～3.2km范围内是完全可行的。
Wearing the Yellow River is located in the Yellow River wandering the river, the river evolution is complex, in order to make the Yellow River project safe and reliable, the Yellow River section of the riverbed evolution. Through the comparative analysis of the measured data, it is considered that the river bed evolution of the place where the Yellow River project is located is mainly affected by the incoming water and sediment conditions in the upper reaches and the riverbed boundary conditions in this section. After the construction of upstream reservoirs and river-control projects, the evolution of the riverbed in this section mainly shows that the mainstream swing is reduced and the flow path is gradually regulated. In the area of Gubeiku mouth, the river is relatively stable with the main luffing amplitude reduced to 600m Around, is to wear a yellow project better than the election river. In the meantime, the width and overcurrent of the main channel during floods are also studied. Based on this, it is considered feasible to narrow the river width of the Yellow River section to 2.8 ~ 3.2km.