随机波作用下海底管道振动对土体液化的影响  

Influence of submarine pipeline vibration on soil liquefaction under random wave

作　　者：徐兴雨 齐静静 徐继尚[3] 刘福兴 李家宁 王伟斌 徐涛 张亚欣 XU Xingyu;QI Jingjing;XU Jishang;LIU Fuxing;LI Jianing;WANG Weibin;XU Tao;ZHANG Yaxin(Technology Inspection Center of Shengli Oilfield,SINOPEC,Dongying 257062,China;Shengli Oil Field Postdoctoral Research Station,SINOPEC,Dongying 257062,China;College of Marine Geosciences,Ocean University of China,Qingdao 266100,China;Shengli Oilfield Inspection and Evaluation Co.,Ltd.,SINOPEC,Dongying 257062,China)

机构地区：[1]中国石油化工股份有限公司胜利油田分公司技术检测中心,东营257000 [2]中国石化胜利石油管理局有限公司博士后科研工作站,东营257000 [3]中国海洋大学海洋地球科学学院,青岛266100 [4]中国石化胜利油田检测评价研究有限公司,东营257000

出　　处：《海洋地质前沿》2023年第10期93-100,共8页Marine Geology Frontiers

基　　金：国家自然科学基金(41976198);山东省自然科学基金(ZR2022QD074);中国石化胜利油田科技攻关项目(YKB2113,YKD2303)。

摘　　要：海底管道-土体-水体相互作用对土体和管道的稳定性具有重要影响,但波浪作用下海底管道对其周围土体性质的影响仍有待深入研究。通过一系列室内波浪水槽试验,研究了波浪荷载和管道振动作用下海床土体内部的超孔隙水压力响应。实验结果表明,管道的铺设会增大海底土体超孔隙水压力累积程度,当管道发生振动时,海床土体超孔隙水压力累积程度进一步增大,从而增加了土体液化势。此外,波高增加也会导致海床土体的超孔隙水压力累积程度增大。本文研究成果对管道-土体相互作用研究和海底管道维护具有指导意义。The interaction of submarine pipeline,soil,and water strongly affects the stability of submarine pipeline.However,the research on the change of soil properties around submarine pipeline under wave action is insufficient.The response of excess pore water pressure under wave load and pipeline vibration was studied in a series of laboratory wave flume tests.Results show that the existence of pipeline increased the accumulative pore water pressure of soil,thus enhancing the liquefaction potential of seabed.The pipeline vibration increased the accumulation degree of excess pore water pressure.In addition,wave conditions alter the response of seabed to the excess pore water pressure,namely,the increase of wave height intensify the accumulative pore water pressure.This study provided a guide to studying the pipe–soil-mass interaction and the submarine pipeline maintenance.

关 键 词：水槽实验 粉质海床 随机波浪 管道振动 孔压响应 

分 类 号：P736[天文地球—海洋地质]