坑道口部内爆炸情况下扩散室中冲击波的数值分析  

Numerical Analysis on Propagation Effect of Shock Wave in Diffuser Chambers under Internal Blast in the Entrance of Tunnel

作　　者：陈虎林[1] 李广新[2] 任新见[2] 

机构地区：[1]中国空空导弹研究院,洛阳471009 [2]总参工程兵科研三所,洛阳471023

出　　处：《爆破》2010年第3期105-109,117,共6页Blasting

摘　　要：扩散室是一类重要的防护工程坑道口部消波措施,其结构形式和几何尺寸对消波效果影响显著。为使其消波效率最大化同时具有较高性价比,对化爆荷载作用下坑道中不同特征尺寸扩散室的消波规律进行探讨,提出了数值分析的计算方案,并取得了理想的消波模拟效果。在此基础上与试验进行比较,对模拟结果展开分析,验证了计算结果的准确性和计算方法的可行性。计算给出了扩散室中冲击波瞬变位置取值的表达式,并指出费效比合理的扩散室长径比为3,为扩散室在防护工程坑道结构设计中的应用提供了技术参考。A diffuser chamber is an important facility for wave absorbing of the entrance in a tunnel,whose structure form and geometry dimension affect wave absorbing effects greatly.In order to maximize wave absorbing efficiency and cost performance,the wave absorbing rules of diffuser chambers with different characteristic scale under blast load in tunnel are discussed,and methods on numerical analysis are given out,perfect results are obtained.Comparing with experiments and analysis on numerical results,its feasibility is proved.The expression for transient position value is achieved,and reference length-diameter ratio value of a diffuser chamber with resonable effect-cost ratio is 3.Technologic reference is provided for the application of diffuser chambers in protective engineering.

关 键 词：扩散室 消波 有限体积法 数值分析 

分 类 号：O383[理学—流体力学]