四面六边透水框架护滩结构效果水槽试验研究

通过水槽试验,研究四面六边透水框架护滩结构效果.试验结果表明,实施四面六边透水框架防护后,河底流速有明显减小,四面六边透水框架具有透水、消能、减小近底流速、局部改善水流流态的作用,从而有可能将近底流速降至不冲流速以下,甚至于使河床产生淤积.与传统护滩工程相比,四面六边透水框架能有效地避免实体护岸工程基础容易被淘刷而影响自身稳定问题,且适应河床地形变化能力强,不需要地基处理,不需要护底,直接抛投于床面,自身稳定,施工简单,成本低,是一种值得大力推广的新技术.

Flume experiment of tetrahedron permeable framework structural effects of beach protection

This article studies the effect of the tetrahedron permeable framework beach protection structure by the flume experiment results show that after the implementation of the tetrahedron permeable framework protection structure, the river flow rate is obviously reduced. The tetrahedron permeable framework beach protection structure is water permeable which can dissipate energy, reduce the near bottom velocity of the water and improve the flow pattern partially, thereby the near bottom velocity of the water may be lower than the non-flushing velocity, even the riverbed deposit can be produced. Compared with traditional beach protection engineering, it can effectively avoid the problem that the entity revetment foundation is easy to be scoured and then affect its stability. It is capable to adapt to the topographic change of river bed without foundation treatment and the need for bottom protection. The tetrahedron permeable framework, which can be directly threw on the riverbed, having the advantages of stability, simple construction and low cost, is a new technology that is worth to be popularized energetically.