前进渡槽是湖北引丹二干渠跨越蒿堰河的主要配套工程,长967.5米,钢筋混凝土工程量3,024立方,设计每秒钟过水7立方米,可灌溉12万亩农田,一九七九年经湖北省水利局同意,由光化县包干建设。预算为838,394元,其中国家补助50万元,按完成工程数量的比例拨款,超支不补,节余不扣。一九七九年元月开 The advance aqueduct is the main supporting project of the Erdan River in the second diversion canal of Hubei, with a length of 967.5 meters. The amount of reinforced concrete works is 3,024 cubic meters. The designed water per second is 7 cubic meters and can irrigate 120,000 mu of farmland. In 1979, With the consent of the Hubei Provincial Bureau of Water Resources, it was constructed by the Guanghua County. The budget is 838,394 yuan, of which the state grants 500,000 yuan, according to the proportion of the number of completed projects, the over-expenditure does not make up, the savings are not deducted. Opened in January 1979