摘要
长输油气管道河沟段水毁是危害突出、普遍存在的一类管道地质灾害,以忠武输气管道和兰郑长成品油管道多年的地质灾害调查、水毁防护工程实践为例,对管道河沟段水毁事故进行总结和分类。河沟水流的冲刷侵蚀及河道摆动是管道河沟段水毁的主要动力因素,灾害表现形式可分为漂管危害、悬跨危害、推移危害和撞击危害4类。阐述了各水毁类型的形成条件及危害特征,并以此提出有针对性的工程防护结构。针对各种防护结构提出了简明的结构图及适用条件,以期对管道建设及运营期河沟段安全防护提供参考。
The water damage in long-distance oil and gas pipelines in river sections is a kind of pipeline geological disaster with prominent hazard characteristics and is a common occurrence.Based on the gathered significant experiences in geological hazard survey and water damage protection engineering in Zhongxian-Wuhan Gas Pipeline and Lanzhou-Zhengzhou-Changsha Product Oil Pipeline,this paper summarizes and classifies the water damage accidents of pipelines in river sections.The scouring erosion of water flow in rivers and river channel swings are primary dynamic factors for water damage of pipeline in river sections,the disaster types include four classifications,that is,pipeline floating hazard,spanning hazard,pipeline traction and collision hazard.The research describes the formation condition and hazard characteristics of different types of water damages,and proposes engineering protective structures accordingly.The authors put forward concise structural diagrams and application conditions for various protective structures,to provide a reference to the safety protection for pipelines in river sections in construction and operation period.
出处
《油气储运》
CAS
2012年第12期945-949,966,共5页
Oil & Gas Storage and Transportation
关键词
油气管道
河沟段
水毁
危害特征
工程防护
oil and gas pipelines,river section,water damage,hazard characteristics,engineering Protection
