新疆山区水库参与调度后部分平原水库可不再承担原有任务,使平原水库废弃成为可能。以玛纳斯河灌区夹河子水库为例,对比分析夹河子水库废弃前后灌区种植业与水库群联合调度方案的变化,确定平原水库废弃的可行性及对灌区种植业与水库群联合调度等的影响。结果表明:夹河子水库废弃可以降低水库群年蒸发(980.9万~1 884.0万m³)与渗漏(135.7万~878.2万m³)损失;丰水年与平水年增加水库群弃水量(分别增加3 474.4万,1 360.1万m³),枯水年减少弃水量(2 140.1万m³);显著提高灌区种植业产值(30.8%~43.9%)与种植面积(17.4%~29.9%)。故山区水库参与调度后夹河子水库废弃可行,而新疆其他类似地区也可以有选择地废弃部分水深浅、库容小、安全状态差的平原水库。

Abandoning some reservoirs in the plain region of Xinjiang becomes possible as they undertake no task any more after the operation of mountain reservoirs. With the Jiahezi Reservoir in Manasi River Irrigation Area in Xinjiang as a case study, we investigate the feasibility of abandoning Jiahezi reservoir and the influence of abandonment on planting industry and reservoir group scheduling by analyzing the changes in planting industry in the irrigation area and schemes of reservoir scheduling before and after the abandonment of the Jiahezi Reservoir. Results show that abandoning Jiahezi Reservoir would reduce annual evaporation loss (by 980.9×10⁴~1884.0×10⁴m³) and leakage loss (by 135.7×10⁴~878.2×10⁴m³) of the reservoir group; improve the water quantity abandoned by the reservoir group (by 3474.4×10⁴ and 1 360.1×10⁴m³ respectively) in high and normal flow years but reduce (by 2 140.1×10⁴m³) in low flow years; significantly improve the output value of planting industry (by 30.8%~43.9%) and the cultivated area (by 17.4%~29.9%). Therefore, we conclude that the Jiahezi Reservoir can be abandoned after the operation of mountain reservoirs. Some other plain reservoirs of shallow water depth, small storage capacities and unsafe status in other similar areas in Xinjiang can also be abandoned.