Optimization monitoring distribution method for gas pipeline leakage detection in underground spaces

被引:16
作者
Zhang, Zewei [2 ]
Hou, Longfei [3 ,4 ]
Yuan, Mengqi [1 ]
Fu, Ming [3 ,5 ]
Qian, Xinming [1 ]
Duanmu, Weike [4 ]
Li, Yuanzhi [1 ]
机构
[1] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
[2] Tsinghua Univ, Inst Publ Safety Res, Dept Engn Phys, Beijing 100084, Peoples R China
[3] Tsinghua Univ, Hefei Inst Publ Safety Res, Hefei 320601, Anhui, Peoples R China
[4] Anhui Theone Safety Technol Co Ltd, Suzhou, Peoples R China
[5] Anhui Prov Key Lab Human Safety, Hefei 320601, Anhui, Peoples R China
基金
国家重点研发计划; 中国国家自然科学基金;
关键词
Natural gas pipeline; Gas leakage monitoring; Underground space; Measurement optimization; Fire and explosion risk; ALGORITHM; DIFFUSION; LOCATION;
D O I
10.1016/j.tust.2020.103545
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Gas leakage from buried gas pipelines in urban areas can lead to accidents involving fire and explosion when the gas gets concentrated into the adjacent underground spaces. Determining monitoring points for the gas leakage in the underground spaces can prevent the initiation of fire and explosion. In this regard, this study proposes an optimized distribution model which relies on risk prediction. It maps the fire and explosion risk in the underground spaces to the discrete target pipeline based on the effect predicted by the monitoring sensors. Moreover, the total risk in this system is calculated through the micro-element method to design an effective distribution optimization strategy. A case study is conducted to illustrate the effectiveness of the new approach and compare it with the risk-based distribution method and effective monitoring length method. The results show that determining the optimized distribution plan is difficult using the risk-based distribution method and effective monitoring length method because these methods may determine a large number of monitoring points or cannot determine the specific location of the monitoring point. The proposed optimization model enables to derive the relationship between the number of distribution points and the risk in the system. For the same number of monitoring points, the rate of risk control in the system of the proposed model is twice that of the conventional model. As the number of monitoring points decreases, the monitoring cost for the prevention of fire and explosion would be largely reduced.
引用
收藏
页数:10
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