羽状钻孔预抽矿井瓦斯过程的数值模拟研究  

Research of Numerical Simulation of Process of Mine Gas Pre-draining by Pinnate Boring

作　　者：郝长胜[1] 王洪胜[1] 庞润芳[1] 

机构地区：[1]内蒙古科技大学实践训练中心,内蒙古包头014010

出　　处：《工矿自动化》2009年第10期32-35,共4页Journal Of Mine Automation

摘　　要：合理抽放瓦斯是解决煤矿瓦斯灾害的重要方法之一。文章在分析煤层瓦斯抽放过程机理的基础上,建立了羽状钻孔预抽瓦斯过程的数学模型,并对该模型进行了数值离散,同时采用牛顿-拉夫逊数值方法,将非线性方程组转化为线性方程组最终得以求解。数值模拟程序采用VB6.0编写,模拟了矿井瓦斯羽状钻孔预抽过程。通过矿山瓦斯抽放实际数据验证,羽状钻孔预抽矿井瓦斯过程的数值模拟结果基本反映了真实的瓦斯抽放情况,为进一步研究瓦斯抽放过程的参数优化奠定了基础。Reasonable gas drainage is an important method to solve gas disaster.On the basis of analyzing mechanism of gas drainage process of coal seam,mathematical models of the process of gas pre-draining by pinnate boring were set up and the models were drawn by numerical discretization.Meanwhile,the nonlinear equations were changed into linear equations by use of Newton-Raphson numeric algorithm.The process of mine gas pre-draining by pinnate boring was simulated with VB6.0 codes.By validation of practical data of mine gas drainage, the numerical simulation result reflected real gas drainage situation basically, which will lay a foundation for a further research on parameters optimization of mine gas drainage.

关 键 词：矿井 瓦斯预抽 数值模拟 羽状钻孔 

分 类 号：TD712.6[矿业工程—矿井通风与安全]