矿难救生球系统在瓦斯爆炸冲击波作用下的动态响应

介绍矿难救生球系统(简称球)的原理及结构,构建巷道空间和球的分析模型,运用数值分析的方法,分别选择3种球体材料和3种球体厚度进行计算,对该系统在瓦斯爆炸冲击波作用下的动态响应进行研讨,分析冲击波作用下球表面的变形、等效应力、等效塑性应变以及球体材料、厚度等因素对球动态响应的影响。结果表明:运用数值分析的方法,可以为救生球系统设计建立一个仿真的实验环境,为优化系统设计、提高设计效率提供参考数据。

Dynamic Response of a Life-saving Ball System to the Shock Wave of Gas Explosion

The principle and structure of a life-saving ball system(referred to as 'ball' for short hereinafter)were introduced. Analytical model of the laneway space and the ball were established. By selecting three kinds of balls with different materials and thickness for calculation, the dynamic response of the ball to the shock wave of gas explosion was respectively analyzed with numerical analysis methods. The analysis focused on the deformation, the equivalent stress and the equivalent plastic strain of the surface of the ball under shock wave, and the effect of the material and thickness on the dynamic response of the ball. The analysis results show that a simulation experimental environment can be established and reference data can be provided for the design of a life-saving ball system by using numerical analysis methods.