森林火灾对埋地输气管道影响的数值模拟
Numerical Simulation on Influence of Forest Fires on Buried Gas Pipeline
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- 引用格式:
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裴斌,邓丰林,陈鹏,杨云峰,杨斯.森林火灾对埋地输气管道影响的数值模拟[J].天然气与石油,2016,34(1):0.doi:
Pei Bin, Deng Fenglin, Chen Peng, Yang Yunfeng, Yang Si.Numerical Simulation on Influence of Forest Fires on Buried Gas Pipeline[J].Natural Gas and Oil,2016,34(1):0.doi:
- DOI:
- 作者:
- 裴斌1邓丰林1陈鹏1杨云峰1杨斯2
Pei Bin, Deng Fenglin, Chen Peng, Yang Yunfeng, Yang Si
- 作者单位:
- 1.中国石油西南管道昆明输油气分公司，2.中国石油管道建设项目经理部中缅项目部
1.PetroChina Southwest Pipeline Kunming Petroleum Gas Transportation Branch; 2.Sino-Myanmar Project Department of PetroChina Pipeline Construction Administration Department, Kunming
- 关键词:
- 数值模拟；埋地管道；温度场；森林火灾
Numerical simulation; Buried pipeline; Temperature field; Forest fire
- 摘要:
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中缅油气管道国内段多埋设于山林区，一旦发生森林火灾，就可能对埋地管道造成影响。针对埋地管道的实际情况建立相应的三维物理模型，通过现场调研确定埋地管道及周围土壤参数，修正建筑火灾升温曲线作为受火面森林火灾升温曲线；采用结构化有限容积法对埋地管道及周围土壤的温度场进行模拟研究；通过FLUENT软件模拟，得到火灾发生及扑灭后一段时间内的管道温度变化规律，找到管道最高温度的位置并分析其出现的原因。实际发生的森林火灾具有一定的蔓延速度，固定区域的停留时间较短，相比之下模拟结果较为保守。
Sino-Myanmar oil and gas pipelines are mostly buried in the mountains and any possible forest fire may result in damage on the pipelines. Establish is an appropriate physical model for actual situation of buried pipelines. Conducted is field investigation to determine parameters of buried pipelines and surrounding soil and amend the building fire heating curve as the forest fire heating curve. Applied is the structured finite volume method to simulate the temperature field of the buried pipelines and surrounding soil. Change regularity of pipeline temperature within a period of time after fire occurring and extinguishing is obtained through FLUENT software simulation, the position of the highest temperature in the pipelines is found and its reason is analyzed. Actual forest fire will spread and the time of fire staying at a fixed area is short. Compared with actual situation, the results obtained from simulation are relatively conservative.
