隧道瓦斯爆炸数值分析与爆源类型确定研究

摘要
图/表
参考文献(21)
相关文章 (2)

全文: PDF (1586 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要以数值模拟方法研究工程中的瓦斯爆炸问题时首先需确定爆源，当前常采用等效TNT当量法与可燃气体法。建立流固耦合数值模型，通过对两爆源分别在自由空间、半自由空间爆炸作用下爆炸冲击波的传播特征与结构的动力响应进行分析，研究了两种爆源的爆炸特征。以洛带古镇隧道瓦斯爆炸致灾为工程背景，分析了在两爆源爆炸作用下衬砌结构的损伤特征，在TNT爆炸作用下衬砌结构近爆区损伤严重，远离爆心区域有少量损伤裂缝；在可燃气体爆炸作用下衬砌结构遍布裂缝损伤较均匀。经比较，可燃气体法模拟爆源的数值计算结果与隧道实际损伤情况基本一致，说明以可燃气体为爆源时更能真实反映隧道衬砌结构损伤特征，表明研究方法合理、计算参数取值可靠。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	李志鹏1
	吴顺川1
	严琼2
	蒋一波2

关键词 ：瓦斯爆炸, 等效TNT当量, 可燃气体爆炸, 衬砌结构损伤

Abstract：

The first problem needed to solve is to determine the type of burst sources when the numerical simulation was used to study the gas explosion in engineering. The commonly used methods for the burst surce type determination are the equivalent TNT weight method and combustible gas method. A numerical model for the fluidstructure coupling was established and the features under two types of burst sources were studiedby analyzing the propagation characteristics of the explosion wave and the dynamic response of the structure under the action of free space and semi free space explosion respectively. Based on the engineering background of the innerblast caused by gas explosion in Luodaiguzhen highway tunnel, the damage characteristics of the lining structure under the detonation of two types of burst sources were analyzed. Under the action of TNT explosion, the damage of lining structure near the detonation zone is serious, and there are only a few damage cracks in the region far away from detonation; The damage of lining structure is more uniform under the action of combustible gas explosion, there are many cracks evenly distributed in the structure. By comparison, it is found the numerical calculation results by the combustible gas methodare consistent with the actual damage condition of the tunnel, which shows that the damage characteristics of the tunnel lining structure can be reflected more realistically when the combustible gas is the burst source, indicating that the research method is reasonable and the calculation parameters are reliable.

Key words： gas explosion equivalent TNT weight;combustible gas explosion damage of lining struture

收稿日期: 2017-07-31 出版日期: 2018-07-15

引用本文:

李志鹏1，吴顺川1，严琼2，蒋一波2. 隧道瓦斯爆炸数值分析与爆源类型确定研究[J]. 振动与冲击, 2018, 37(14): 94-101.
LI Zhipeng1，WU Shunchuan1，YAN Qiong2，JIANG Yibo2. Numerical analysis on the tunnel gas explosion and study on the method for determining the type of burst source. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(14): 94-101.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2018/V37/I14/94

[1] 杨秀敏.爆炸冲击现象数值模拟[M]. 中国科学技术大学出版社，2010.
Yang Xiumin. Numerical simulation for explosion and phenomena[M]. Press of University of Science and Technology of China,2010.
[2] 顾鑫，章青，爆炸荷载作用下大坝破坏分析的数值模拟研究进展[J]. 河海大学学报(自然科学版)，2017, 45(1):45-55.
GU Xin, ZHANG Qing. Progress in numerical simulation of dam failure under blast loading[J]. Journal of Hohai Univerdity(Natural Sciences), 2017,45(1):45-55.
[3] 方秦, 杨石刚, 陈力, 等. 天津港“8•12”特大火灾爆炸事故建筑物和人员损伤破坏情况及其爆炸威力分析. 土木工程学报, 2017(3): 12-18.
FANG Qin, YANG Shigang, CHEN Li, et al. Analysis on the building damage, personal casualties and blast energy of the “8.12” explosion in Tianjin port. CHINA CIVIL ENGINEERING JOURNAL, 2017(3): 12-18
[4] 耿振刚, 李秀地, 苗朝阳, 等. 温压炸药爆炸冲击波在坑道内的传播规律研究[J]. 振动与冲击, 2017, 36(5): 23-29.
Geng Zhengang, Li Xiudi, Miao Chaoyang, et al. Propagation of blast wave of thermobaric explosive inside a tunnel[J]. Journal of Vibration and Shock, 2017, 36(5): 23-29.
[5] 姚术健, 蒋志刚, 卢芳云, 等. 汽车炸弹钢箱梁内部爆炸局部破坏效应分析[J]. 振动与冲击, 2015, 34(7): 222-227.
Yao Shujian, Jiang Zhigang, Lu Fangyun, et al. Analysis on local damage of steel box girder under internal blast loading of vehicle bomb[J]. Journal of Vibration and Shock, 2015,34(7): 222-227.
[6] 马砺, 崔祥华, 邓军. 天然气储罐泄漏扩散的影响因素及危害性[J]. 西安科技大学学报, 2017 37(1): 15-20.
Ma Li, Cui Xianghua, Deng Jun. The influence factors of natural gas tank leakage and its harmfulness[J]. JOURNAL OF XI’AN UNIVERSITY OF SCIENCE AND TECHNOLOGY, 2017 37(1): 15-20.
[7] 文霞, 姚安林, 陈谦, 等. 隧道并行输气管道爆炸对邻管的冲击效应分析[J]. 中国安全生产科学技术, 2017, 13(1): 156-162.
Wen Xia, Yao Anlin, Chen Qian, et al. Analysis on impact effect of gas pipeline explosion to adjacent pipeline for parallel in tunnel[J]. Journal of Safety Science and Technolygy,2017, 13(1): 156-162.
[8] 张秀华, 张春巍, 段忠东. 基于爆能等效原理大型模爆器燃气爆炸冲击加载的数值模拟[J]. 爆炸与冲击, 2014, 34(1): 80-86.
Zhang Xiuhua, Zhang Chunwei, Duan Zhongdong. Numerical simulation on shock waves generated by explosive mixture gas from large nuclear blast load generator based on equivalent-energy principles[J]. EXPLOSION AND SHOCK WAVES, 2014, 34(1): 80-86.
[9] 张秀华, 吴燕燕, 李玉顺. 室内燃气爆炸作用下钢框架结构动力响应分析[J]. 工程力学, 2013, 30(B06): 358-362.
Zhang Xiuhua, Wu Yanyan, Li Yushun. Numerical analysis of dynamic responses of steel frame structure subjected to internal gas explosion[J]. ENGINEERING MECHANICS,2013, 30(B06): 358-362.
[10] 吴卫卫. 受限空间可燃气体爆炸数值模拟[D]. 东北大学，2013.
WU Wei-wei. Numerical simulation of gas explosion in confined space[D]. Northeastern University, 2013.
[11] 张秀华. 燃气爆炸冲击作用下钢框架抗爆性能试验研究与数值模拟[D]. 哈尔滨: 哈尔滨工业大学, 2011.
Zhang Xiuhua. Experimental research and numerical simulation on blast resistance performance of steel frames[D]. Harbin: Harbin Institute of Technology, 2011
[12] Manual LS-DYNA，Volume II. Version 971[J]. Livermore Software Technology Corporation，2007，7374:354.
[13] Borrvall T. The RHT concrete model in LS-DYNA[C]// European Ls-Dyna Conference. 2011.
[14] TU Zhen-guo, LU Yong. Evaluation of typical concrete material models used in hydrocodes for high dynamic response simulations[J]. International Journal of Impact Engineering, 2009, 36(1): 132-146.
[15] Riedel W, Thoma K, Hiermaier S, et al. Penetration of Reinforced Concrete by BETA-B-500 Numerical Analysis using a New Macroscopic Concrete Model for Hydrocodes, 1999.
[16] Henrych J, Major R. The dynamics of explosion and its use[M]. Amsterdam: Elsevier, 1979.
[17] 张社荣, 李宏璧, 王高辉, 等. 空中和水下爆炸冲击波数值模拟的网格尺寸效应对比分析[J]. 水利学报, 2015, 46(3): 298-306.
Zhang Sherong, Li Hongbi, Wang Gaohui, et al. Comparative analysis of mesh size effects on numerical simulation of shock wave in air blast and underwater explosion[J]. SHUILI XUEBAO, 2015, 46(3): 298-306.
[18] TB 10120-2002 铁路瓦斯隧道技术规范 [S].
TB 10120-2002 Technical code for railway tunnel with gas [S](in Chinese).
[19] 龚顺风，邓欢，朱升波，等. 近爆作用下钢筋混凝土板动态破坏的数值模拟研究[J]. 振动与冲击，2012，31(2)：20-24.
Gong Shunfeng,Deng Huan,Zhu Shengbo,et al. Numerical simulation for dynamic failure of a reinforced concrete slab under close-in explosion. Article title[J]. Journal of Vibration and Shock, 2012,31(2):20-24.
[20] 张小勇,龚顺风. 隧道内爆炸作用下衬砌结构损伤机理及抗爆性能研究[J]. 振动与冲击,2013,32(22):193-199.
Zhang Xiaoyong,Gong Shunfeng. Damage mechanism and anti-explosion behavior of tunnel lining structures under internal blast loading. Article title[J]. Journal of Vibration and Shock,2013, 32(22): 193-199.
[21] 艾亿谋, 杜成斌, 洪永文, 等. 混凝土坝抗震加固中钢筋混凝土的动力本构模型. 水利学报, 2009, 40(3).
AI Yi-mou, DU Cheng-bin, HONG Yong-wen, et al. Dynamic constitutive model for reinforced concrete in aseismic strengthening of concrete dam. SHUILI XUEBAO, 2009, 40(3).