开级配抗滑磨耗层材料堵塞行为和疏通方法

Exploration on Blockage and Dredging of OGFC Material

OGFC(开级配抗滑磨耗层)材料随着运营时间的增长,其空隙的堵塞程度也越来越严重。针对OGFC堵塞的特点,提出单面堵塞和双面堵塞,分别模拟OGFC材料的浅度和深度堵塞;采用高压水清洗堵塞,在室内研究了OGFC板件的堵塞行为和高压水枪的冲洗效果。实验表明,同样堵塞程度,高水压对渗水系数增长速率影响明显;渗水系数的增长遵循先快后慢,存在极限值;深层堵塞决定最终冲洗效果;疏通影响了渗水路径,表现在竖直方向上渗水量的急剧增加。

With longer operating period,the clogging of the OGFC material is getting more and more severe.In view of the clogging characteristics of the OGFC material,this study puts forward mono-side clogging and bi-side clogging to simulate both shallow and deep clogging.By applying high-pressure water column to flush the clogging material,the study explores the clogging mechanism of OGFC material and the flushing effect of the high-pressure water sprinkler.The experimental results show that the high pressure influences the growing velocity of the permeation factor on a large scale,which grows faster in the first few minutes and has a summit throughout the whole process.The results also manifest that final flushing effect depends on the deep clogging and the permeating path is influenced by the dredging which results in the considerable increase of the total volume of vertical permeation.