皮山河下游沙漠区洪水资源化成效分析

摘要

Taking the Pishan River as an example , the floodwater utilization efficiency of building a river channel in the desert area and a dam on the river was studied based on the groundwater numerical model .The results show that, when the water level increased by 0.5 m, the river stored flood water in the amount of 42.38 ×10 4 m3 per year, and when the water level increased by 1 m, the river stored flood water in the amount of of 343.74 ×10 4 m3 per year.Therefore, building a channel and damming can effectively improve the floodwater utilization efficiency and increase the amount of available water resources in the desert area downstream of the Pishan River .%以皮山河为例，依据地下水数值模型，研究在沙漠区修建河道、在河上筑坝蓄滞洪水的洪水资源化方式的成效。结果表明，当河水位升高0.5 m时，可储存洪水42.38万m3/a；当河水位升高1 m时，可储存洪水343.74万m3/a。可见，以修建河道、河上筑坝的方式，可有效提高皮山河下游沙漠区洪水利用率，增加水资源可利用量。