论文部分内容阅读
矮堰基础附近冲刷坑的深度是矮堰设计的重要参数,关系到建筑物的稳定与安全。系统回顾了国内外80余年关于矮堰基础冲刷的研究进展,阐述了矮堰基础冲刷的分类和机理,从物理模型试验、理论分析和数值模拟3个方面评述了研究现状和存在的不足。目前矮堰基础冲刷较为成熟的成果多集中于二维矮堰非淹没式清水冲刷方面,以物理模型试验方法为主,对于三维矮堰结构的动床冲刷、非冲积原状土床沙成分组成的影响、行进沙波与冲刷过程的耦合关系、浑水冲刷过程数值模拟技术等问题研究还有待深入。
The depth of the scouring pit near the foundation of the dwarf weir is an important parameter for the design of the dwarf weir, which is related to the stability and safety of the building. The research progresses on the foundation scour of the dwarf weir over 80 years at home and abroad are reviewed systematically. The classification and mechanism of the scouring of the dwarf weir are expounded. The current research status and existing problems are reviewed from three aspects: physical model test, theoretical analysis and numerical simulation. At present, the most mature results of the foundation scouring of the dwarf weir mainly focus on the non-submerged clear water scouring of the two-dimensional dwarf weir. The physical model test method is the main method. For the dynamic bed scouring of the three-dimensional dwarf weir structure, Influence, the coupling relationship between the traveling sand wave and the scouring process, the numerical simulation technology of the muddy water scouring process and so on have yet to be further studied.