兰成管道石亭江穿越管段水毁事故原因  

Causes for flood damage in Shitingjiang River crossing section of Lanzhou-Chengdu Pipeline

作　　者：张力佳[1] 王鸿[1] 郭君[1] 铁明亮[1] 张磊[1] 董芃羽[1] 刘艳东[1] 

机构地区：[1]中国石油天然气管道工程有限公司,河北廊坊065000

出　　处：《油气储运》2015年第12期1351-1354,共4页Oil & Gas Storage and Transportation

摘　　要：兰成管道石亭江穿越管段遭遇四川西北地区突降百年一遇暴雨,被冲出并断管,造成水毁事故。为了查明水毁事故原因,对设计阶段的合理性进行了评断,并从断管的直接原因和根本原因两方面进行分析,结果表明:人民渠大坝的不断加固,造成河床的不断切削,使兰成管道石亭江穿越管段逐渐暴露而受到损毁。水上构筑物对油气管道影响非常大,在设计、运行阶段都应引起重视,由此提出了对于管道修复的建议及要求:必须对管道穿越地区做详尽的地质考察和水文评价;注重穿越河流自身的特点,重视河势分析,充分考虑各种风险因素,加强对穿越断面的比选;重视采砂、采石、采矿等人为活动对河道的影响。The Shitingjiang River crossing section of the Lanzhou-Chengdu Pipeline experienced an unprecedented flood in northwest Sichuan Province. As a result, the pipeline was washed out and broken. To find out root causes for such flood damages, rationality in design stages is reviewed. In addition, direct and root causes for the pipeline breaking are analyzed. The results show that continuous consolidation of dams for Renmin Canal induced undercutting of the riverbed. Accordingly, the Shitingjiang River crossing section was exposed gradually and suffered from flood damages. Since buildings （structures） on water may have significant impacts on oil and gas pipelines, sufficient attentions shall be paid during design and operation stages. Accordingly, suggestions and requirements for restoration of the pipeline are proposed： （1） detailed geologic surveys shall be performed for areas with crossing of pipelines; （2） cares shall be taken for specific features of rivers to be crossed and related various risks to identify the optimal section for crossing; and （3） sufficient attentions shall be attached to impacts that sand excavation, quarrying, mining and other human activities may have to river channels. （6 Figures, 2 Tables, 10 References）

关 键 词：兰成管道 水毁 大坝 河床下切 消能措施 

分 类 号：TE88[石油与天然气工程—油气储运工程]