Abstract：Suitable slope ratio of submerged trench is much important to the safety and cost of some underwater construction. In this paper，the calculating model of submerged trench is discussed. Instead of the traditional method, integral method based on circular slice theory is used to determine the optimum slope ratio, which can increase the accuracy and efficiency of calculation，at the same time，an example based on Xiamen immersed tube project is given to illuminate this method in contrast to the traditional one, and the effect of flow velocity on the submerged slope stability is also analyzed. The results indicate that 1:2.5 and 1:2 is respectively the reasonable gradient for the upper and lower part of the slope, and seepage is advantageous to the stability of submerged slope, but as far as this project is concerned, its influence inclines to be ignored since the flow velocity is less than 3m/s.
林枫;陶履彬;朱合华. 水下边坡稳定性分析研究 #br#[J]. 岩石力学与工程学报, 2003, 22(S1): 2149-2153.
Lin Feng， Tao Lǖbin， Zhu Hehua. RESEARCH ON STABILITY OF SUBMERGED SLOPE. , 2003, 22(S1): 2149-2153.
