机掘煤巷混合式通风方式的模型试验研究

Model Experiment of Mixed Ventilation in Machine Driven Headings in Coal Seams

本文通过分析比较各种掘进通风方式的特点,指出它们的使用范围和存在问题;从有限射流基本规律出发,分析计算了长抽短压通风方式风量恰配比,并经试验进行了修正;分析试验了长抽短压方式中短压辅助效果与压入距离的关系;提出并验证了降低长压短抽通风方式粉尘污染的方法。

On the basis of limit submerged jet law, the paper analyzes and calculates the match ratio of air flow in exhaust (with long duct) and forced (with short duct) ventilation in machine driven headings. The relation of auxiliary effect of forced ventilation to the forced distance in such a mixed ventilation condition has been tested and analyzed. When the forced (with long duct) fan accompanied with short duct exhaustor is used, measures are adopted for reducing the extent of dust pollution.