由于海底水动力环境的复杂性,海底管线破坏等问题日益突出,而海床的冲刷是管线破坏的一个重要原因。本文经对单向恒定流作用下的海底管线冲刷坑内泥沙动水休止角这一特征参数的理论分析和试验研究,得到其相关关系和变化规律,对进一步研究海底管线的防护技术有一定参考价值。 Due to the complexity of the hydrodynamic environment on the seafloor, the problems such as the submarine pipeline destruction are becoming increasingly prominent. The erosion of the sea floor is an important reason for the pipeline destruction. In this paper, the theoretical analysis and experimental study on the characteristic parameters of hydraulic conductivity at seafloor scouring pits under the action of unidirectional constant flow are carried out, and the correlations and variation rules are obtained, which is of certain reference to the further research on the protection technology of submarine pipelines value.