超长掘进工作面风量预测关键技术  

Key technology of wind forecast in a long heading face

作　　者：邢玉忠[1] 侯水云 张国祥 任建峰 连清旺[1] 

机构地区：[1]太原理工大学矿业工程学院,山西太原030024 [2]山西焦煤西山煤电集团公司,山西太原030000

出　　处：《煤炭学报》2011年第9期1501-1505,共5页Journal of China Coal Society

基　　金：国家科技支撑计划资助项目(2007BAB13B01);山西省自然科学基金资助项目(2009011033)

摘　　要：基于流体动力学和非线性渗流理论,在分析计算漏风在风筒布中的临界渗透率、临界渗流速度和风筒布平均孔隙直径等参数的基础上,建立了风筒漏风流态判定模型,以典型矿井条件下风筒最大风压、百米漏风率等参数为基础,得到矿井条件下风筒漏风的线性渗流分布规律。建立了风筒漏风数学模型,以实际风筒入口风量、入口静压和风筒出口风量为边界条件,对长距离掘进工作面风筒漏风分布和风压分布进行了模拟计算,获得单位长度风筒风阻和单位长度风筒层流漏风风阻的反演计算理论,数值模拟与实测结果相符。According to the percolation theory of fluid dynamics and nonlinear,in calculating the critical penetration,the critical flow velocity and the average pores diameter of duct on the basis of parameters,the model determining duct leakage flow state was established.Based on the maximum duct pressure and hectometer of air leakage rate under a typical mine,the linear flow distribution of duct air leakage was obtained in mine conditions.The mathematical model of duct leakage was established.A boundary condition to actual duct inlet air volume and inlet air duct static pressure and air volume exports,the duct leakage and pressure distribution in heading face of long-distance was simulated.The inversion theory was got about the drag per unit length of duct and the laminar flow leakage drag unit length of duct.It is consistent with the measured results of numerical simulation.

关 键 词：风量预测 线性渗流 风筒参数 风筒漏风流态 诊断模型 

分 类 号：TD722[矿业工程—矿井通风与安全]