东江流域枫树坝水库“2022.6”洪水调度实践

Flood dispatch practice of Fengshuba Reservoir in Dojiang River during June 2022

2022年,东江中上游河源市遭遇近50年最强“龙舟水”,枫树坝水库出现建库以来最大5 d入库洪量,水库防汛形势严峻。枫树坝水库防洪库容相对有限、下游防护标准低、区域内影响调度的水利工程多,调度技术难度大。相关部门加密会商,精准测算上、下游和区间来水,统筹上、下游防护对象和水库自身安全,对枫树坝水库有序进行了21次闸门起、闭调度,拦蓄了39%的洪量,削减了24%~78%的洪峰,有效避免了龙川县城被淹,降低洪峰水位0.7 m,充分发挥了工程拦洪、削峰、错峰作用,为东江流域防灾减灾做出了应有贡献。系统梳理本次水库调度实践经验,可为今后类似水利工程调度提供有益参考。

In 2022,HeYuan City,located in the middle and upper reaches of the Dongjiang River,encountered the"strongest dragon boat water"in nearly 50 years.Fengshuba Reservoir had the largest five-day inflow volume since its construction with limited flood control capacity.The downstream flood protection is inadequate,downstream protection standards are low,and there are many water projects in the region that could affect dispatching making scheduling technology difficult.The relevant departments conducted more frequency fine consultations to accurately calculate the incoming water from the upstream,downstream,and the water within the section,overall protecting the flood protection objects of the upstream and downstream,as well as the safety of the reservoir itself.21 gate opening and closing schedules were carried out in a sequential order,intercepting and storing 39%of the flood volume,reducing 24%to 78%of the peak flood,averting flooding in the Longchuan County three times,lowering the highest flood peak level by 0.7 meters,and fully displaying the water projects'role to block,reduce,and stagger peaks,thus making a significant contribution to disaster prevention and reduction in the Dongjiang River Basin.The practical experience of this reservoir dispatching practice has been organized systematically and can provide valuable reference for future similar water projects.