摘要
当前管道系统最大的安全风险和事故来源很大程度上可归结为埋地管道感知能力的不足。为此,提出一种管道地下空间敷设方式,即在现有检测、监测感知技术的基础上,实现埋地管道的直接观察、监测及接触。基于全方位数据采集和智能监控技术,从根本上提升管道线路重点地段感知能力,从而大幅提升管道线路安全水平。参考市政雨污水管道与城市综合管廊敷设方式,提出采用钢筋混凝土半预制U形管涵加盖板的地下空间构造方式,管道采用凹形水泥管座或金属支架支撑安装在管涵底部,同时增加地下空间内智能化的视频监控、光纤感知、可燃气体感知、管体缺陷(应力)外检测等固定或可移动感知技术。初步分析了管道地下空间敷设的风险影响因素,保守估计总体风险可降低34%以上。对管道地下空间敷设开展经济性分析,预计地下空间敷设管段建设费用增加7.5%~25%,运行维护与事故损失费用可降低30%以上。建议管道行业进一步开展相关可行性论证及工程试验。
At present,the biggest safety risk and accident source of pipeline systems can be attributed to the lack of sensing ability of buried pipelines to a large extent.For this reason,a method of laying pipelines in underground space was put forward,so that the buried pipelines could be observed,monitored and accessed directly with the present detection,monitoring and sensing technologies.The sensing ability of critical pipeline sections can be enhanced fundamentally by the full range data acquisition and intelligent monitoring technology,and further the safety level of the pipelines can be improved greatly.By referring to the laying mode of municipal rainwater and sewage pipelines and urban utility tunnels,the underground space structure of semi-prefabricated reinforced concrete U-shaped pipe culvert with cover plate was proposed,where the pipelines are installed at the bottom of the pipe culvert with the support of metal bracket or concave cement pipe holder.Meanwhile,the intelligent video monitoring,optical fiber sensing,combustible gas sensing,external detection of pipeline defects or stress and other fixed or movable sensing means should be provided in the underground space.In addition,the risk factors of pipeline laying in underground space were analyzed preliminarily,and it was conservatively estimated that the overall risk could be reduced by more than 34%.Moreover,the economy of pipeline laying in underground space was also analyzed.It is expected that the construction cost of pipeline sections laying in underground space will be increased by about 7.5%to 25%,but the pipeline operation and maintenance cost,as well as the accident loss,will be reduced by more than 30%.Therefore,it is suggested that the relevant feasibility study and engineering tests should be performed in the pipeline idustry in future.
作者
税碧垣
薛鲁宁
杨玉锋
马云宾
邱苗苗
赵博鑫
SHUI Biyuan;XUE Luning;YANG Yufeng;MA Yunbin;QIU Miaomiao;ZHAO Boxin(Pipeline R&D Center,PipeChina North Pipeline Company;China Petroleum Pipeline Engineering Co.Ltd.)
出处
《油气储运》
CAS
北大核心
2021年第12期1321-1329,共9页
Oil & Gas Storage and Transportation
基金
国家管网集团重点课题“油气管道线路及站场感知技术研究”,WZXGL202106。
关键词
油气管道
感知能力
地下空间敷设
建设方案
风险
经济性分析
oil&gas pipelines
sensing ability
laying in underground space
construction plan
risk
economic analysis
