基于泄洪移民区域分汊河道泄流相互影响的模型试验研究

基于政府的组织行为、政府的协调行为和政府的监督行为与行洪移民区域后期扶持的具体工作的研究,治淮工程移民安置方案产生31.2亿元的投资。移民区域的大小与安全行洪区范围直接相关,分汊河道行洪的最佳分流比决定了行洪的安全与否。为了探讨复杂并联泄洪河道中不同的闸门控制对泄流的影响,论文结合淮河入江水道归江控制段模型试验,对复杂分汊并联河道的分流比及其流态对河道的稳定等进行了分析研究。通过对所采集的水位流量资料进行理论分析,按照不同的闸门开度组合,结合水面流态,系统分析入江水道中下段分汊并联河道在不同的流量下最优闸门开度组合及支汊分流比。单闸控制,主汊河道闸门开度一定时,分流比随着总泄流量增加而减小,两支汊河道分流比基本相同,且随总泄流量增加而增加。双闸控制,主汊河道和支汊河道闸门组合调节时,主汊分流比同单闸控制,支汊分流比变化量来自主汊,不影响其他支汊河道分流比。最优闸门开度为主汊单闸控制2/3开度,最优分流比为76%、12%、12%,在此分流比下行洪,将保持移民后期区域不扩大或缩小。

Model test study of discharge mutual influence of bifurcated river in flood discharge resettlement area

The resettlement plan of the Huaihe River project resulted in an investment of 3.12 billion yuan RMB based on the organizational behavior, coordination behavior and the supervisory behavior of the government, as well as the study of the specific work supported by the post-resettlement area. The size of the resettlement area is directly related to the safety flood diversion area, and the optimal diversion ratio of the branch river determines the safety of the drawing off of floodwater. In order to study the influence of different sluice controls on the discharge in complex flood discharge, this paper analyzes the diversion ratio of the complicated branching and parallel river channel and the stability of the river channel in combination with the Huaihe River water diversion control section model test. Based on the theoretical analysis of the collected water level and flow data, the optimal sluice opening combination and branch branching of the lower reaches of the river channel are analyzed systematically at different flow rates ratio, according to the combination of different sluice opening and combined with the surface water flow. According to the combination of different sluice opening and the surface water flow, the paper analyzes the optimal sluice opening combination and branch diversion ratio of the lower reaches of the river channel under different flow rates based on the theoretical analysis of the collected water level and flow data. When the single sluice of the main branch opens in fixed degree, the diversion ratio decreases with the increase of the total discharge, and the diversion ratio of the two minor branches is basically the same, and increases with the increase of the total discharge. When double sluice control, the main branch and minor branch sluices adjust together, the main branch diversion ratio with the single sluice control, minor branch diversion ratio change from the main branch, which does not affect the other minor branch river diversion ratio. Therefore, the best sluice opening is 2/3, and the best flow diversion ratios are 76%, 12% and 12%. This optimal diversion ratio will keep the immigration area constant.