在西北干旱区 ,渠系利用系数普遍不高 ,绿洲农业区内的地下水位往往维持较高 ,易产生农田土壤次生盐渍化 ,利用深挖方渠道 ,可以有效的提高渠系利用率和灌溉水的有效利用率和重复利用率 ,控制地下水位。本文根据新疆阿克苏市多浪渠乔格塔电站至可可巴什闸段深挖方渠道的实例 ,分析了深挖方渠道的增水效益及其他效益 ,介绍了深挖方渠道设计和施工中的一些问题 In the northwestern arid region, the canal utilization coefficient is generally not high, and the groundwater table in the oasis agricultural area tends to be high, which is likely to cause secondary salinization of the farmland. Using deep excavation channels can effectively improve the canal utilization rate and Effective utilization of irrigation water and reuse, control of groundwater level. According to the example of deep excavation channel from Qiaogeta Hydropower Station to Kekebashushi gate of Duolangqu, Xinjiang, this paper analyzes the water-enhancing benefits and other benefits of deep excavation channels, and introduces the design and construction of deep excavation channels some problems