防突栅栏的防突机理及应用  

Action mechanism of prevent-outburst barrier and its application

作　　者：单智勇[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院

出　　处：《煤炭学报》2008年第6期670-674,共5页Journal of China Coal Society

基　　金：国家自然科学基金重点资助项目(ISFC50534070);教育部高等学校博士点基金资助项目(20060460001)

摘　　要：在分析煤与瓦斯突出能量来源的基础上,利用冲击动力学理论,建立煤与瓦斯突出的强度、能量与防突结构的变形能之间的关系,根据型钢的极限抗弯强度,并结合剪应力和整体稳定性验算,计算防突栅栏处于极限状态时可以承担的最大煤与瓦斯突出强度,从而形成防突栅栏的极限设计方法.现场试验证明:防突栅栏是一种有效防止煤与瓦斯突出事故扩大的技术措施.Based on analysing energy origin of coal and gas outburst, the relationship between the intensity and energy of coal and gas outburst and the deformation energy of the anti-outburst structure was set up by impact dynamics theory. According to the limit flexural intensity of beam, and combined shear stress and overall stability computation, the largest coal and gas outburst intensity that anti-outburst grid can afford at the limit state could be conversely calculated, thus formed the limit design method of the anti-outburst grid. Practics prove that the preventoutburst grid is an effective measure that can weaken the coal and gas outbursts.

关 键 词：煤与瓦斯突出 防突栅栏 突出强度 极限设计 

分 类 号：TD713.3[矿业工程—矿井通风与安全]