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中文摘要：
船舶走锚时可能对海底管线造成破坏,实际工程中常用碎石保护结构来对海底管道进行保护。为了研究这种结构的保护效果和保护机理,在大型试验槽中对三种尺寸模型锚进行了模型试验。在试验中测量了锚爪尖端位置和锚爪力在保护结构中的变化,得到锚体从细砂进入保护结构时的运动过程和运动规律,据此研究了碎石保护结构对海底管线的保护效果并分析了保护机理。
英文摘要：
The submarine pipeline may be damaged by the dragging anchors of ships. The rock armour berms are commonly used for pipeline protection in practical engineering. Little research work has been found in the existing literature for the armour berms. To study the protection mechanism and efficiency of this kind of armour berms,model tests were carried out in a model tank,in which foundation soil and the armour berm were simulated. Three model anchors with different sizes were adopted in the tests. By observing the trajectories of the dragging anchors in foundation soil and in the armour berm,it is possible to obtain the movement process and rule of anchor in sand and rock berms. The protection mechanism of rock berms for submarine pipelines against dragging anchors is discussed.
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