南水北调水对潮白河地区回补情况及水位影响分析

Effect of South-to-North water transfer project on recharge and water level in Chaobai river area

南水北调水进京以来,在满足居民日常饮用的情况下,在潮白河冲洪积扇中上部进行回补,通过潮白河河道、雁栖河河道的回补,使地下水位抬升。潮白河地区2018年12月与2017年同期相比,区域升幅在6~8 m,回补中心区升幅达12 m,影响范围124.5 km^2。按照2018年回补量每年持续回补情况下,根据模型预测,2022年12月与2017年同期相比,预计潮白河区域地下水回升9~11m,回补中心区升幅达13~14 m。

Since the South-to-North water transfer project entered Beijing,the middle and upper parts of the alluvial plain of Chaobai river are selected to recharge for it under the condition of satisfying the daily drinking of residents.The groundwater level is raised through the recharge of Chaobai river and Yanqi river.Compared with the same period in 2017,the regional increase of Chaobai river area is 6~8 m in December of 2018,and the central area of Chaobai river area is 12 m,with an impact area of 124.5 km2.According to the forecasting results of the model,the groundwater in Chaobai river region is expected to rise 9~11 m and 13~14 m in the recharge center in December of 2022 compared with the same period of 2017.