干管冲水法防结冰对比试验研究

摘要

This paper to analyze the experimental of anti-acing of front of Feng Man Old Dam from single-rowed main pipeline flushing method and double-rowed main pipeline flushing method respectively, especial y focus on the correlation analysis of the experimental effect. According to the experiment, either one would do the trick.But no matter the surface velocity or the range of the unfrozen water, single-rowed main pipeline flushing method is better than double-rowed main pipeline flushing method. As the results of such experiments, single-rowed main pipeline flushing method is preferred. The research results can provide a reference for similar projects.%为有效防止冰冻对丰满新坝外保温体系的破坏、提高坝面外保温体系整体保温效果及耐久性，设计并研制了单排冲水干管与双排冲水干管两套装置，分别从单排冲水干管法与双排冲水干管法两个方案对丰满老坝坝前防结冰试验进行探讨，对试验的效果方面进行重点对比分析。试验结果表明，单排冲水干管法与双排冲水干管法两个方案均可达到预期效果，但单排冲水干管法产生的表面流速和不冻水域范围均大于双排冲水管法，试验效果较为明显，列为首选方案，本次试验结果可为类似工程提供参考借鉴。