采场风流参数计算数学模型和数值计算方法

本文利用渗流理论和管路漏流流动规律及采空区与相邻风流通道交界面上的力学关系、流量关系,建立了一整套采场风流参数计算数学模型,并介绍了解算采空区风流参数的有限元方法。利用现场实测流量结果作为边界条件进行了计算、计算所得采空区边界上的压力值与实测值吻合很好。

The Mathematical Model and Method of Calculating Airflow Parameters on Longwall Face

Based on the infiltration theory and flow law of pipeline leakage,as well as the mechan-ical and flow equations on the interface between goaf and its adjacent airflow passage, the paper presents a set of mathematical model for calculating1 airflow parameters on the longwall face. The finite element method is,used for calculating the goaf airflow parameters. In calculation the flow quantity obtained in situ on longwall face are taken as boundary conditions. The results of calculation are basically in agreement with that measured in situ on longwall face.