辽阳灌区改造工程三分干渠道水力计算与设计分析

Hydraulic Calculation and Design Analysis of No. 3 Main Canal of Reformation Project in Liaoyang Irrigation Area

辽阳灌区三分干工程包括节制闸、引水闸、分干渠道和建筑物等。经过多年的运行,大部分骨干工程现已严重破损,多为带病运行,急需进行节水配套改造建设。通过对三分干渠道的水力计算与改造设计分析,对辽阳灌区进行节水配套改造二期工程的建设实施后对现有渠道影响不大,在三分干进水闸处可通过进水闸门进行调节。改造后三分干渠道均可通过设计流量,如果特殊地段产生渠顶高度不够的情况可采用局部渠顶加高的方式解决。

No. 3 main cannel project of Liaoyang irrigation area includes sluice gate,diversion gate,separate main cannel and construction. Most of the key project has been damaged seriously after operation for many years,hard in operating and urgent to be reformed and constructed especially the water-saving transformation project. Through hydraulic calculation and reformation design analysis for No. 3 main cannel,the completion of No. 2 water-saving transformation had little impaction on existing channel in the Liaoyang irrigation area,the intake gate my be used to adjust at the inlet sluice of No. 3main cannel. No. 3 main cannel may meet the demands of design flow after reformation,partial channel crest may be heightened if the crest height is not enough in some special sections.