Ren Honglei, Lin Fei, Tao Yuezan, Wei Ting, Kang Bo, Li Yucheng, Li Xian
College of Civil Engineering, Hefei University of Technology, Hefei 230009, China.
School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China.
Toxics. 2023 Feb 3;11(2):149. doi: 10.3390/toxics11020149.
For the needs of the whole region's emergency regulation of the nullah sudden water pollution event, the emergency regulation strategy of the accident section and upstream and downstream of the sudden water pollution event is studied. For the accident section, the duration of the whole emergency event is calculated using the parameter quantification method; for the upstream of the accident section, the NSGA-II is used to adjust the gate opening to ensure the water level stability of the upstream pools; for the downstream section, the optimized partition method is used to identify the unfavorable pools and close the unfavorable pool to extend the water supply time. Based on the example of an emergency event in the section of the Liyanghe gate-Guyunhe gate of the middle line project, the research results are as follows: the accident section is identified as the Xiaohe gate-Hutuohe gate, the upstream of the accident section is the Liyanghe gate-Xiaohe gate, and the downstream of the accident section is the Hutuohe gate-Gangtou Tunnel gate. The duration of the emergency event in the accident section is 7.9 h; the maximum average water level deviation before the gate upstream of the accident section is 0.05 m; two unfavorable canal pools are identified in the stream of the accident section, and the water supply time of the unfavorable pools is extended by 6.13 and 5.61 d.
为满足全区域对河道突发水污染事件的应急调控需求，研究了突发水污染事件事故段及上下游的应急调控策略。对于事故段，采用参数量化法计算整个应急事件的持续时间；对于事故段上游，采用NSGA-II算法调节闸门开度，以确保上游水池水位稳定；对于下游段，采用优化分区法识别不利水池并关闭不利水池，以延长供水时间。以中线工程里洋河闸—古运河闸段的一次应急事件为例，研究结果如下：事故段确定为小河闸—滹沱河闸，事故段上游为里洋河闸—小河闸，事故段下游为滹沱河闸—岗头隧洞闸。事故段应急事件持续时间为7.9小时；事故段上游闸门处最大平均水位偏差为0.05米；在事故段下游识别出两个不利渠道水池，不利水池的供水时间分别延长了6.13天和5.61天。
