含能材料2025，Vol.33Issue(7)：703-713,11.DOI:10.11943/CJEM2025072
多级扩散室坑道内爆炸冲击波的衰减特性数值模拟研究
Numerical Simulation Study of the Attenuation Characteristics of Blast Shock Waves in Multi-Level Diffusion Tunnels
摘要
Abstract
In order to attenuate the blast shock wave in the tunnel efficiently,the design idea of setting up multiple continuous diffusion chambers in the tunnel was proposed.Based on the numerical simulation method,the influence of the structural param-eters of the multi-stage diffusion chamber on the wave absorption efficiency was systematically discussed,and the propagation attenuation characteristics of the shock wave with a pressure of 2-11 MPa and a positive pressure duration of 18.25-1000 ms in the pit containing single,double/tertiary diffusion chamber were investigated.The results showed that the increase in the number of diffusion chambers can effectively improve the wave dissipation efficiency of the tunnel,and the peak pressure of the shock wave after passing through the three-stage diffusion chamber pit is 81.08%lower than the peak pressure of the straight pit with-out diffusion chamber with the same length,while the spacing between the diffusion chambers has a limited effect on the wave dissipation efficiency of the tunnel.Under the condition that the total length of the diffusion chamber is equal,the tertiary diffu-sion chamber has the best attenuation effect on the shock wave compared with a single long diffusion chamber and the second-ary diffusion chamber.With the increase of shock wave pressure under the same positive pressure duration,the wave dissipation efficiency of the multi-stage diffusion chamber pit slowly increases.Under the same peak overpressure condition,the wave loss efficiency of the three-stage diffusion chamber pit decreases greatly with the increase of positive pressure time,but it can still maintain a wave loss efficiency of 43.38%when the positive pressure time is 1000 ms.关键词
多级扩散室/爆炸冲击波/传播规律/消波Key words
multi-stage diffusion chamber/blast shock wave/laws of propagation/wave dissipation分类
军事科技引用本文复制引用
陆邱,彭永,王子国,程浩,李翔宇,李志斌..多级扩散室坑道内爆炸冲击波的衰减特性数值模拟研究[J].含能材料,2025,33(7):703-713,11.基金项目
国家自然科学基金(12372344) National Natural Science Foundation of China(No.12372344) （12372344）
