高压天然气管道物理爆炸坑模型研究

Q1 Earth and Planetary Sciences
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引用次数: 0

摘要

本研究采用 Hypermesh 和 LS-DYNA 数值模拟软件建立了天然气管道多域耦合模型,包括土壤域、管道域、TNT 炸药域和空气域,并为模型设置了非反射边界条件。采用 TNT 当量法将天然气管道的物理爆炸量换算成 1387.38 kg TNT 爆炸量。模拟结果表明,管道物理爆炸形成一个宽度为 12.68 米、深度为 4.12 米的近似椭圆形弹坑;通过比较弹坑模拟值和相同敷设条件下根据 PRCI 经验公式计算出的弹坑大小值,对模型的 TNT 当量进行修正,修正系数选取为 0.9,修正后的 TNT 当量为 1248.64 kg;修正后的模型弹坑尺寸为深 3.72 m,宽 12.66 m,与现场试验得到的弹坑尺寸相比,修正后的模型模拟计算出的弹坑深度和宽度误差分别为 5.7%和 15.5%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Research on physical explosion crater model of high-pressure natural gas pipeline

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 0.9, and the corrected 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.

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来源期刊
Petroleum Research
Petroleum Research Earth and Planetary Sciences-Geology
CiteScore
7.10
自引率
0.00%
发文量
90
审稿时长
35 weeks
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