论文部分内容阅读
煤矿井下通风,不仅在安全上是不可缺少的,而且,近年来,伴随着开采向地层深部移动,地热增加了,作为井下降温的对策,通风也起到了重要的作用.因此,必须采用科学的通风管理方法.对通风管理来说,巷道的形状,尤其是巷道断面积和巷道周长,在计算风量和风阻时,都是最基本的数据.近几年来,各矿都在进行井下安全集中监控系统的研制,准确掌握通风状态,则是其主要目的之一,而且也是重要的测定项目.然而,煤矿巷道,因在地压的作用下是随时间的变化而变化的,所以,必须定期测定巷道的断面积,可是,至今尚无一种简便的巷道断面积测定方法.
Underground ventilation in coal mines is not only indispensable for safety, but also has been playing an important role as a countermeasure for downhole cooling in recent years, because geothermal energy has increased as the mining moves deeper into the strata, and therefore ventilation must also be scientifically based Ventilation management For ventilation management, the shape of the roadway, especially the cross-sectional area of the roadway and the perimeter of the roadway, are the most basic data in the calculation of air volume and windage, and in recent years, Monitoring system development, accurate understanding of the ventilation state, is one of its main objectives, but also important measurement items.However, coal mine roadway, due to the role of ground pressure is changing with time, so must be regularly Determination of the cross-sectional area of the roadway, however, so far there is no easy way to measure the cross-sectional area of the roadway.