NUMERICAL SIMULATION OF OIL AND GAS PIPELINE VULNERABILITY EVALUATION INDEXES UNDER EFFECT OF LANDSLIDE

摘要：

The integrity of oil and gas pipelines is seriously impacted by landslides in tough terrain in westemChina. The quantitative e-vahiation technology is an effective method for pipelines risk management under the threat of geohazard. In order to establish the pipeline vulnerability evaluation indexes under effect of landslide, the finite element method is adopted to simulate landslide movement, pipeline mechanical behavior and soil-pipe interaction by changing geometrical sizes and mechanical characteristics of them, such as the landslide area, landslide thickness, material composition of landslide, movement type of landslide, pipehne length in landslide, diameter, wall thickness and strength of pipelines. The regularity for change of stresses and deformations of pipeline subjected to landslide can be obtained by means of numerical simulation. The results show that the geometrical sizes of landslide and the pipeline length in landslide have great effect on pipeline vulnerability, and the effect increases with increasing of the above indexes; the wall thickness and strength of pipeline have less effect on pipehne vulnerability and the effect can be ignored. In the end, the weights and scores of every vulnerability evaluation index can be given on the basis of the above conclusion.

关键词： oil end gas pipeline vulnerability evduation index numericd simulation landslide

作者: Han Bing Jing Hongyuan Wu Zhangzhong Hao Jianbin Liu Jianping

作者单位: PetroChina Pipeline R&D Center Langfang,Hebei,China School of Petroleum Engineering Southwest Petroleum University,Chengdu,Sichuan,China PetroChina Pipe PetroChina Pipehne R&D Center Langfang,Hebei,China

会议类型: 国际会议

会议名称: The 3rd World Conference on Safety of Oil and Gas Industry(第三届世界石油天然气工业安全会议 WCOGI 2010)

会议地点: 北京

会议语种:英文

页码: 346-352

在线出版日期: 2010-09-27（万方平台首次上网日期，不代表论文的发表时间）