水下拔桩阻力与沙粒颗粒关系试验  

Experiment of Relationship of Resistance of Pile Pulling and Sand Particles

作　　者：余奇[1] 唐亚鸣[1] 

机构地区：[1]河海大学机电工程学院,江苏常州213022

出　　处：《机械制造与自动化》2014年第1期174-176,共3页Machine Building & Automation

摘　　要：疏浚机具在水下作业时,泥沙的阻力是影响刀具功率的主要因素。水下的泥沙分布具有随机性,不同的水面下沙粒的大小和组成各不相同,因而其对疏浚机具的阻力也不相同。但水下沙粒的大小对疏浚机具的阻力具有一定的规律性。通过试验,分别对三种不同粒径的沙粒做水下拉伸阻力试验,求拉伸方向上的沙粒大小对刀具阻力的影响规律。试验表明:对于不同粒径的沙粒,在相同水温以及相同高度的液面下,竖直方向上的拉伸阻力与沙的粒径成反比。In the dredging process,the resistance coming from soil and sand is the main factors that affect the power of the dredging tools.The distribution of sand and soil under the water is random.Their size and composition in different regions are not same,therefore,the resistance to the dredging tool is not same either.However,the influence of the size of sand on the resistance of vertical direction is regular.Through the experiment this paper obtains the resistance in sand of different size to the dredging tool finds the law of the influence of its resistance on the dredging tool.The result of the experiment shows that in the same temperature and depth of water,the resistance of vertical direction is inversely proportional to the size of sand.

关 键 词：疏浚机具 沙粒 拉伸阻力 试验 

分 类 号：TK730[交通运输工程—轮机工程]