サイホン吐出し水路の空気排出特性予測手法の開発

抄録

A prediction method of air discharge characteristics during the self-priming stage has been developed for siphon pipes of pump stations on the basis of air entrainment and transport correlations coupled with the quasi-steady-state equation of an open channel. Duration times required for siphon completion of siphon discharge pipes, taking account of pipe size and geometry, water levels and pump characteristics can be predicted. The developed method was applied to the siphon completion time prediction for siphon pipes with various sizes and geometries, including a full-scale circular pipe and a 1/15-sclae rectangular conduit. Measured and predicted siphon completion times agreed within about 50% devlations, and there were no significant bias errors depending on pipe sizes or geometries.