基于MIKE FLOOD的杜家台分蓄洪区运用调度研究

发布时间：2018-07-23 07:34

【摘要】：运用MIKE平台建立杜家台蓄洪区行洪道MIKE11一维河道模型,模拟并分析了红星垸堤刨毁前后的分洪道行洪能力。同时搭建MIKE21分洪区二维模型,并利用MIKE FLOOD动态耦合一、二维模块,以此为平台研究杜家台分蓄洪区分蓄汉江夏、秋洪水与长江洪水时的调度工况。结果表明:红星垸堤刨毁后分洪道宽度增加,显著降低了该处分洪道上游的洪水水位,提高了分洪道分洪能力;汉江低量级来水情况下,杜家台只需运用南区1~4垸分洪,而高量级来水下杜家台需运用1~7垸分洪;长江分洪时,处于下游的第6垸分洪能力显著,最终可解除第7、9垸的风险,只需运用1~6垸。现有防洪工程中第5、6垸分洪速度较慢且分洪量小,而处于最上游的第2垸分洪量大且分洪较快,导致与其相临的1~4垸洪水超高,危及7、9垸,故7、9垸堤顶亟待加高,同时5、6垸分洪能力需要增强。
[Abstract]:Based on Mike platform, a one-dimensional channel model of Dujiatai flood storage area is established, and the flood diversion capacity of flood diversion channel before and after the Hongxing embankment is destroyed is simulated and analyzed. At the same time, the two-dimensional model of MiKE21 flood diversion area was built, and the dynamic coupling of Mike flood was used as a platform to study the dispatching conditions of Hanjiang River, autumn flood and Yangtze River flood in Dujiatai flood diversion and storage area. The results show that the width of the flood diversion channel increases after the Hongxing dike is destroyed, and the flood water level in the upper reaches of the flood diversion channel is significantly reduced, and the flood diversion capacity of the flood diversion channel is improved, while in the case of low order water coming from the Hanjiang River, Dujiatai only needs to use the 1 ~ 4 embankment in the Southern District for flood diversion. The flood diversion capacity of the sixth embankment in the lower reaches of the Yangtze River is remarkable, and the risk of the 7th embankment can be finally relieved, only 1 and 6 embankments should be used. In the existing flood control works, the speed of flood diversion in the 5th and 6th embankment is slow and the flood diversion volume is small, while the second embankment in the upper reaches of the embankment has a large amount of flood diversion and fast flood diversion, which leads to the super-high flood of the 1 ~ (4) embankment adjacent to the embankment and endangers the 7 ~ (9) embankment. Therefore, the top of the No. 7 ~ (9) embankment needs to be raised urgently. At the same time, the flood diversion capacity of embankment needs to be strengthened.
【作者单位】：华中科技大学水电与数字化工程学院;湖北省防汛抗旱指挥部办公室;
【分类号】：TV873

【相似文献】