TNT当量法在地下窨井空间天然气管道泄漏爆炸破坏研究  

Research on TNT equivalent method for natural gas pipeline leakage and explosion damage in underground manhole space

作　　者：徐赫桦 程刚 王学森 XU Hehua;CHENG Gang;WANG Xuesen(School of Safety Engineering,North China Institute of Science and Technology,Yanjiao 065201,China;School of Computer Science,North China Institute of Science and Technology,Yanjiao 065201,China;Anhui Huicai Technology Co.,Ltd,Hefei 230601,China)

机构地区：[1]华北科技学院安全工程学院,北京东燕郊065201 [2]华北科技学院计算机学院,北京东燕郊065201 [3]辉采科技有限公司,安徽合肥230601

出　　处：《华北科技学院学报》2025年第1期95-101,106,共8页Journal of North China Institute of Science and Technology

基　　金：国家自然科学基金项目(42377200);中央引导地方科技发展资金项目(226Z5404G);安徽省住房城乡建设科学技术计划项目(2023-YF015)。

摘　　要：城市地下天然气管道在日常运行中存在泄漏爆炸风险,爆炸伤害波及范围作为评价爆炸影响效应、确定安全距离的关键指标,是城市天然气管道设计的重要参考依据。为准确推算泄漏燃气扩散至地下窨井空间后燃气爆炸所产生的破坏范围,通过TNT当量法建立数学模型,根据天然气泄漏到燃气检查井、水网窨井等密闭空间的天然气体积值,研究了燃气爆炸后的破坏范围。研究表明:以某城市生命线项目地下天然气管道节点数据为背景,对爆炸预测分析模型进行测试和验证,得出了天然气管道窨井、水网窨井爆炸的死亡半径、重伤半径、轻伤半径以及财产损失半径,研究结果为地下窨井空间天然气管道泄漏爆炸事故应急预案制定和应急处置方案实施提供重要的参考依据。There is a risk of leakage and explosion in urban underground natural gas pipelines during daily operation.The range of explosion damage is a key indicator for evaluating the impact of the explosion and determining the safe distance,which is an important reference for the design of urban natural gas pipelines.In order to accurately calculate the extent of damage caused by gas explosion when leaked gas diffuses into underground manhole spaces,a mathematical model was established using the TNT equivalent method.Based on the volume of natural gas leaked into enclosed spaces such as gas inspection wells and water network manholes,the extent of damage caused by gas explosion is studied.The research has shown that based on the node data of underground natural gas pipelines in a certain city's lifeline project,the explosion prediction analysis model is tested and validated,and the death radius,serious injury radius,minor injury radius,and property loss radius of natural gas pipeline manholes and water network manholes are obtained.The research results provide important reference for the development of emergency plans and the implementation of emergency response plans for natural gas pipeline leakage and explosion accidents in underground manhole spaces.

关 键 词：TNT当量法 地下窨井空间 天然气管道 泄漏爆炸 破坏研究 

分 类 号：O382.1[理学—流体力学] TQ053.2[理学—力学]