深水海底管道抛石防护结构石块粒径设计  

Riprap stone size design of protective structure for deepwater submarine pipeline

作　　者：孙青[1] SUN Qing(China Oilfield Services Limited,Geophysical,Tianjin 300451,China)

机构地区：[1]中海油田服务股份有限公司物探事业部,天津300451

出　　处：《石油工程建设》2021年第1期18-22,共5页Petroleum Engineering Construction

摘　　要：针对抛石石块粒径对海底管道防护效果的重要作用及影响因素,分别从抛石防护结构在环境载荷作用下的稳定性、抛石冲击管道的安全性以及防止海床沉积物渗出三方面,结合国内外抛石技术用于海底管道防护的研究和应用成果,梳理了石块粒径的设计方法和计算公式。并对南海某海底管道抛石防护结构进行了设计计算,结合深水环境载荷特点,计算推荐石块的特征粒径,为实际作业中抛石防护结构的粒径选择提供参考和指导建议。In view of the importance and influence of the riprap stone size on the effect of submarine pipeline protection,the stability of the riprap protective structure under environmental loads,the safety of stones impacting pipeline and the prevention of seabed sediment seepage are considered.And combined with the research and applications of riprap techniques used for submarine pipeline protection at home and abroad,the design method and calculation formulas of the stone size are sorted out.The riprap protective structure for a submarine pipeline in the South China Sea is designed and calculated.Combined with the characteristics of deepwater environment,the characteristic stone size is recommended for reference and guidance in the stone size selection of the riprap protective structure in actual operation.

关 键 词：海底管道 抛石防护 石块粒径 稳定性 防渗设计 

分 类 号：TE973.92[石油与天然气工程—石油机械设备]