泄压坑道式工房内爆试验与数值模拟研究  

Test and Numerical Research of Explosion Inside Partially Confined Tunnel Structure

作　　者：陈泰年 任辉启 李素灵 张珊珊 张程健 袁野 CHEN Tainian;REN Huiqi;LI Suling;ZHANG Shanshan;ZHANG Chengjian;YUAN Ye(Institute of Defense Engineering,Academy of Military Sciences,Beijing 100850,China;China Safety Technology Research Academy of Ordnance Industry,Beijing 100053,China;State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China;Beijing lnstitute of Technology Chongqing Innovation Center,Chongqing 401135,China)

机构地区：[1]军事科学院国防工程研究院,北京100850 [2]中国兵器工业火炸药工程与安全技术研究院,北京100053 [3]北京理工大学爆炸科学与技术国家重点实验室,北京100081 [4]北京理工大学重庆创新中心,重庆401135

出　　处：《兵工学报》2024年第7期2404-2413,共10页Acta Armamentarii

摘　　要：为探索复合构型坑道式工房内爆炸效应和泄压消波措施,提出泄压坑道式工房设计。通过理论分析和线性拓展预测的方法预判坑道内压力分布,建立多工况泄压坑道式工房的有限元模型。通过数值模拟得出结构内部和外部冲击波传播与衰减的规律,分析冲击波涡流成型机理以及泄压消波的过程,计算得到多工况下坑道内部和外部的压力分布规律。通过试验研究对线性拓展计算和数值模拟结果进行对比分析,揭示由丁字接头、泄压通道、膨胀室组成的复合构型坑道式工房对于消波效率的显著提升作用,得出坑道结构内泄压消波的效能以及坑道结构口部外冲击波分布规律,以期为坑道式工房的结构选型及布局优化设计提供技术支撑。The propagation and attenuation effect of blast wave in a proposed partially confined tunnel structure are investigated.A three-dimensional finite element model of the partially confined tunnel structure is developed to simulate the propagation of blast wave in the partially confined tunnel and quantify the blast loading vented from the internal space to the adjacent free field.The mechanism of vortex forming,venting effect and blast wave attenuation characteristics are revealed based on the numerical predictions.The significant improvement effect of a composite configuration consisting of T-joints,venting channel,and expansion chambers on the wave attenuation efficiency is revealed by using numerical predictions and theoretical predictions based on scaling laws,the venting effect of the proposed tunnel structure is quantified.and the blast overpressure distribution in the adjacent free-field is obtained.This work can provide technical support for the structural optimization design of the partially confined tunnel.

关 键 词：泄压坑道式工房 泄压消波 冲击波传播规律 压力分布规律 

分 类 号：O383.1[理学—流体力学]