采空区紊流漏风相关系数的研究

Study on the relative coefficient of air leakage in the gob

利用中下分层工作面进、回风巷网上漏风的特点 ,建立了网上漏风数学模型 ,通过实测通风参数 ,拟合漏风强度与漏风位置的关系 ,揭示出网上矸石紊流漏风风阻的分布规律 ,得出采空区矸石漏风相关系数随矸石冒落时间的变化规律 ;由实测数据开始偏离回归直线的位置 ,可判断出漏风由紊流向层流转化的时间 。

Making use of the characteristics of the air leakage between the intake and the return airways in the faces of middle and lower slice, the mathematical model of air leakage is established. Through measuring the ventilation parameter practically, fitting the relation of air leakage intensity and its position, the distribution law of the air leakage windage and the leakage coefficient on the time is given. The time of transforming from a turbulent flow leakage into a lamellar flow in the waste is given by the location measuring data of deviating from the regression line. This makes a foundation for studying the air leakage law on other similar gob.