Abstract:

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 m3/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