瓦斯爆炸载荷下矿用救生球复合结构的动态响应及可靠性

1.西安科技大学 安全科学与工程学院,陕西 西安 710054; 2.教育部 西部矿井开采及灾害防治重点实验室,陕西 西安 710054; 3.西安科技大学 教育部工程中心,陕西 西安 710054; 4.中煤科工集团西安研究院,陕西 西安 710077

瓦斯爆炸; 矿用救生球; 泡沫铝; 聚氨酯; 复合结构

Dynamic response and reliability of coal mine rescue ball with gas explosion blast load
CHEN Xiao-kun1,2,3,LI Hai-tao1,2,WANG Yi-lin4,WANG Qiu-hong1,2,3,JIN Yong-fei1,2,3

(1.College of Safety Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China; 2.Key Laboratory of Western Mine Exploration and Hazard Prevention,Ministry of Education,Xi'an 710054,China; 3.Engineering Research Center of the Ministry of Education,Xi'an University of Science and Technology,Xi'an 710054,China; 4.Xi'an Research Institute of China Coal Technology and Engineering Group,Xi'an 710077,China)

gas explosion; coal mine rescue ball; aluminum foam; polyurethane; composite structure

DOI: 10.13800/j.cnki.xakjdxxb.2017.0304

备注

救生球在煤矿井下的灾害救援中具有重要的作用,其抗爆性能直接决定了救援的效率。在多孔复合材料基础上,采用LS/DYNA软件建立了3种不同复合结构的救生球,基于ALE算法考查了3种救生球结构在瓦斯爆炸作用下的动态响应,分析了各结构的应力场、位移场及能量变化特征,计算了不同复合材料对结构可靠性的影响。结果 表明:多孔复合材料增强了整体结构的抗爆性能,泡沫铝的缓冲性能优于聚氨酯。

Rescue ball plays an important role in rescue for coal mine disasters,and the antiknock performance of rescue ball directly determines the efficiency of rescue.We establish three different composite structure of rescue ball based on porous composite materials using LS/DYNA,and ALE algorithm is employed to examine the dynamic response of those 3 balls with underground gas explosion blast load.The stress field,displacement field and energy variation laws are analyzed,and the influence of different composite materials on the structural reliability are calculated.The results show that the porous composite material enhances the anti explosion performance of the whole structure,and the cushioning performance of aluminum foam is better than that of polyurethane.