高压冲水喷嘴破土性能试验研究  

Experimental study on ground-breaking performance of high-pressure flushing nozzle

作　　者：舒敏骅 朱时茂 尹纪富 洪国军 石启正 SHU Min-hua;ZHU Shi-mao;YIN Ji-fu;HONG Guo-jun;SHI Qi-zheng(CCCC National Engineering Research Center of Dredging Technology and Equipment Co.,Ltd.,Shanghai 201208,China;Key Laboratory of Waterway Dredging Technology of Ministry of Transport,Shanghai 201208,China;CHEC Dredging Co.,Ltd.,Shanghai 200120,China)

机构地区：[1]中交疏浚技术装备国家工程研究中心有限公司,上海201208 [2]航道疏浚技术交通行业重点实验室,上海201208 [3]中港疏浚有限公司,上海200120

出　　处：《水运工程》2019年第12期14-18,共5页Port & Waterway Engineering

摘　　要：高压冲水喷嘴的破土性能对耙吸挖泥船的疏浚效率有着重要的影响。通过试验对高压冲水喷嘴的破土性能进行研究。结果显示:随着靶距的增加,高压冲水喷嘴的破土深度逐渐减小,破土宽度逐渐增大;随着喷嘴出口压力的增大,破土深度逐渐增加,破土宽度逐渐减小;随着航速的增加,破土深度和破土宽度均逐渐减小;对比有耐磨块和无耐磨块时高压冲水喷嘴的破土性能,两者破土特性的整体变化趋势基本一致--在喷嘴离泥面相同距离时,有耐磨块高压冲水的破土深度和破土宽度均比无耐磨块时要大,且破土宽度的对比量更为明显。The ground-breaking performance of the high-pressure flushing nozzle has a significant influence on the dredging efficiency of the trailing suction dredger.The ground-breaking performance of the high-pressure flushing nozzle is studied based on the experiment test.The results show that with the increase of the target distance,the ground-breaking depth of the high-pressure flushing nozzle gradually decreases and the groundbreaking width gradually increases;with the increase of the nozzle outlet pressure,the ground-breaking depth gradually increases and the ground-breaking width gradually decreases;with the increase of headway,the groundbreaking depth and width gradually decrease.Comparied with the ground-breaking performance of the high-pressure flushing nozzle with and without wear blocks,the overall change trend of the ground-breaking characteristics of the two nozzles is basically the same.When the nozzle is at the same distance from the mud surface,the groundbreaking depth and width of wear block high-pressure flushing are both larger than those without wear block,and the comparison of ground-breaking width is more obvious.

关 键 词：耐磨块 高压冲水 靶距 出口压力 航速 

分 类 号：U615.3[交通运输工程—船舶及航道工程]