大名滞洪区分洪口门位置的确定

Positioning of flood diversion gate in Daming Flood Retention Basin

大名滞洪区位于河北省大名县中部。现状运用方式是人工扒口分洪,无控制性工程,分洪流量和水量不易调度和控制,同时也很难把握分洪时机有效控制险情,因此需要建设固定分洪口门,实现大名滞洪区有计划地控制运用。讨论了滞洪区分洪口门的位置确定,选择东王村分洪口门和升斗铺分洪口门两个方案进行比较分析。分析表明,东王村分洪口门方案分洪条件优越,受口门外地形的影响少,分洪保证率高,可保障漳河的防洪安全。

Darning Flood Retention Basin is located in the middle of Darning County of Hebei Province. At present, artificial levee breach is applied when flood is coming since no control works have been constructed. It has resulted in difficulties for control of diversion flow effectively at the right time and increase of associated risks. Therefore, a fixed flood diversion gate is needed in order to operate the flood retention basin in a planned way. Discussions are made how to place the gate and comparative analysis is carried out between Dongwangcun Gate and Shengdoupu Gate. The result demonstrates that the Dongwangcun Gate has relative super conditions and less influence by the landscape outside the gate, and moreover high guarantee rate for flood diversion and can safeguard flood safety of the Zhanghe River.