Research on physical explosion crater model of high-pressure natural gas pipeline  

作　　者：Dongyuan Wang Shuiying Xu Zhao Wang Yazhe Zhou Na Gao 

机构地区：[1]China Petroleum Pipeline Engineering Corporation,Langfang,China [2]PipeChina Engineering Technology Innovation Co.Ltd.,Tianjin,China [3]School of Civil and Resource Engineering,University of Science and Technology Beijing,China [4]Iinternational Business Department,China Petroleum Pipeline Bureau Engineering Co.Ltd.,Langfang,China

出　　处：《Petroleum Research》2024年第3期432-438,共7页石油研究（英文）

基　　金：supported by the Central University Basic Research Project (FRF-IDRY-20-028,FRF-BD-19-019A);the National Key Research and Development Program of China (2016YFCO0801408);the National Natural Science Youth Foundation Project (51504017).

摘　　要：In this study,Hypermesh and LS-DYNA numerical simulation software are used to build a multi domain coupling model of natural gas pipeline,including soil,pipeline,TNT explosive and air domain,and the non-reflection boundary conditions are set for the model.The TNT equivalent method is used to convert the physical explosion amount of natural gas pipeline into 1387.38 kg TNT explosive amount.The simulation results show that the physical explosion of pipeline forms an approximate elliptical crater with a width of 12.68 m and a depth of 4.12 m;the TNT equivalent of the model is corrected by comparing the crater simulation value and the size value of the crater calculated by the PRCI empirical formula under the same laying condition,and the correction coefficient is selected as O.9,and the cor-rected TNT equivalent is 1248.64 kg:the modified model crater size is 3.72 m deep and 12.66 m wide,compared with the crater size obtained from the field test,the error of crater depth and width calculated by the modified model simulation is 5.7%and 15.5%respectively.

关 键 词：High-pressure natural gas PIPELINE Physical explosion CRATER Numerical simulation 

分 类 号：TE973[石油与天然气工程—石油机械设备]