黑河正义峡断面下泄水量偏差分析

根据黑河干流水量分配方案,建立了不同时期正义峡断面分配水量与莺落峡断面同期来水量的关系,对2004—2009调度年不同时期正义峡断面下泄水量偏差进行了分析。结果表明:关键调度期(尤其是7—8月)正义峡断面下泄水量不足且偏差呈逐年扩大趋势同,这是近几年黑河水量调度面临的突出问题。由于现状情况下9月以后增加下泄量的空间有限,因此在继续做好该时期集中下泄措施外,应增大7—8月洪水期的下泄量,以有效应对正义峡断面下泄水量偏小的严峻形势。

Dispersion and Countermeasure of Zhengyixia Section Discharge Capacity in Heihe River

According to the Heihe River water quantity allocation scheme,this paper established the relationship between Zhengyixia section allocated water quantity and Yingluoxia section runoff in different periods of different years,analyzed and evaluated Zhengyixia discharge capacity deviation in different periods from 2004 to 2009.The results show that in the key scheduling period(especially in the period of July and August) Zhengyixia discharge capacity is short and the deviation is getting bigger year by year which is an outstanding problem that Heihe River water regulation is challenged.Since the present situation of increasing the discharge after September is limited,except continuing to do a good job in this period,scheduling priority should also be expanded to July and August to increase flood period discharge,in order to effectively deal with the problem that Zhengyixia section diminished discharge capacity.