淤泥质海底航道边坡稳定性研究

Research on Slope Stability of Muddy Submarine Channel

以连云港淤泥质海底航道为研究对象,在浅地层剖面测量基础上,采用极限平衡法分析了不同荷载作用下不同边坡、不同沉积类型航道边坡稳定性。结果表明,连云港海底航道沉积层主要为水下三角洲沉积物,航道边坡在静荷载和动荷载作用下基本处于稳定状态,航道边坡安全系数在空间上具有一定的差异,外航道外段航道边坡安全系数最大,外航道内段航道边坡稳定性系数次之,徐圩航道边坡安全系数最小。

Based on the field observation,the slope stability of Lianyungang muddy submarine channel was analyzed by the extreme equilibrium method according to its different slopes and sediment of channel with different load.The results show that the sediment of the channel is mostly the un-derwater delta deposit.The channel slope is basically stable under either static load or dynamic load.There are differences among the safety factors of the channel slope with the maximum safety factor of the outer channel slope,followed by the inter channel slope,and the minimum in Xuwei channel slope.