矿用救生舱瓦斯爆炸动力响应数值模拟  

Numerical simulation on dynamic response of coal mine refuge chamber under gas explosion loading

作　　者：张博一[1] 李秋稷[1] 王伟[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《哈尔滨工业大学学报》2013年第4期14-20,共7页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金青年科学基金(51108141);黑龙江省青年科学基金(QC2011C064);中央高校基本科研业务费专项资金(HIT.NSRIF.2011101)

摘　　要：为确保煤矿井下可移动式救生舱的合理设计和安全使用,基于瓦斯爆炸原理,利用有限元软件ANSYS/LS-DY-NA,采用ALE流固耦合算法,对体积分数为9.5%,体积为200 m3的瓦斯/空气混合气体在井下巷道内爆炸产生的爆炸流场进行数值模拟,分析了两类典型救生舱舱体在入射冲击波峰值超压0.6 MPa,历经400 ms时间作用下的压力场分布、塑性应变及各重点部位位移时程等动力响应.计算结果表明,改变舱体截面尺寸对舱体的抗爆性能影响显著,采用瓦楞型侧壁的舱体结构能有效增大舱壁的抗弯刚度,而改变舱体长度对于舱体的抗爆性能影响不大.To ensure the safe design of coal mine refuge chamber, we investigate the strength and deformation of the chamber under explosion. Based on the principle of gas explosion, numerical simulation was performed using ANSYS/LS-DYNA software and ALE fluid-solid coupling algorithm on the flow filed of underground tunnel explosion caused specifically by 9.5 % concentration of 200 m3 gas. Systemically analyses were done on the relationship between the pressure field as well as plastic strain distributions and the dynamic response through the displacement-time curves. The cross-section dimension of the chamber surface where it faces to the explosion directly can significantly influence the anti-explosion performance. The camber with corrugated sidewall structure can imperatively enhance the influence on the anti-explosion properties of the bending rigidity of the bulkhead. However, there is no much carbine by changing its length

关 键 词：瓦斯爆炸 流固耦合 动力响应 矿用救生舱 

分 类 号：TD712[矿业工程—矿井通风与安全]