基于水量分配方案的抚河流域最小控制需水量研究

鄱阳湖流域水资源丰富，在非汛期尤其是用水高峰期，存在供需水矛盾和河道外用水挤占河道内用水现象。基于水量分配方案，以控制断面为节点，考虑河道外需水，兼顾河道内生态环境需水，系统提出计算流域控制断面最小控制需水量方法。在此基础上，以抚河流域为例，把流域划分为12个控制断面，分别为沙子岭、黎川、南城、洪门、廖坊、石门、廖家湾、娄家村、马圩、焦石、柴埠口和李家渡，各断面的最小控制需水量分别为740、380、2873、1200、4981、261、5085、7168、050、10894、1556 和1030 m3/s。通过水文监测控制流域断面流量，为落实水量分配方案、保护流域水环境和维持河流生态系统健康提供保障。同时，以最小需水量并与实测流量比较，确定各用水区余缺水量，为实施流域非汛期水量调度提供依据

STUDY ON THE METHOD OF THE MINIMUM CONTROL WATER DEMAND IN FUHE RIVER BASIN BASED ON WATER RESOURCES REGULATION SCHEME

Although water resources are abundant in Poyang Lake basin,water conflicts and the phenomenon that the water outside the river course occupies the water inside the river course occur in non-flood peak,especially in the period that the required water is numerous.Based on the water resources regulation scheme,the calculation method of minimum control water demand was proposed taking the control section as node,and the water demanded inside and outside river course was considered in the method.According to the method,Fuhe River basin was simplified into 12 control sections.They were Shaziling,Lichuan,Nancheng,Hongmen,Liaofang,Shimen,Liaojiawan,Loujiacun,Mawei,Jiaoshi,Chaifukou and Lijiadu.And the minimum control water demand were 7.40,3.80,28.73,12.00,49.81,2.61,50.85,71.68,0.50,108.94,15.56 and 10.30 m3/s,respectively.Through monitoring the flow of the control section,it can provide protection for implementing water resources regulation scheme,preserving the water environment and maintaining health of river ecosystem.Meanwhile,through comparing the minimum water demand with the monitoring flow,the water surplus or deficit was evaluated,and the result may provide basis for implementing water allocation program in non-flood peak.