跨江倒虹吸管结构在宝江灌区中的应用

lication of Cross River Inverted Siphon Structure in Baojiang Irrigation Area

宝江灌区渠系建筑提升工程旨在解决农业灌溉问题,提高灌区输水建筑物设计标准。干渠上现状无倒虹吸管,通过改造拟将宝江灌区中干渠上的源头渡大渡槽改建为头渡倒虹吸管。通过比选选用内衬水泥砂浆防腐球墨铸铁管管材及埋地布置型式;对进出口段、农田山坡埋管段和跨浈江河底埋管段进行分段结构设计,头渡倒虹吸管过流能力为5.1 m^(3)/s,过流能力满足要求。

Baojiang Irrigation District Canal System Building Upgrading Project aims to solve agricultural irrigation problems and improve the design standards of water conveyance structures in the irrigation district.There is currently no inverted siphon on the main canal.Through renovation,it is planned to convert the source crossing culvert on the main canal in Baojiang Irrigation District into a head crossing inverted siphon.Through comparison,it is selected to use lined cement mortar anti-corrosion ductile iron pipes and buried layout types.It is designed with segmented structures for the import and export section,the buried pipe section on farmland slopes,and the buried pipe section across the Zhenjiang River.The head crossing inverted siphon has a flow capacity of 5.1m3/s,which meets the requirements.