大采长综放面瓦斯来源及浓度分布测定及分析

Measurement and Analysis on Gas Resources and Gas Distribution in the Bigger Mining-Length and Fully Mechanized Top Coal Caving Face

论述了单元法测定大采长综放工作面各种瓦斯涌出源比例以及瓦斯浓度分布的方法原理。根据单元法实测数据分析可知:工作面漏风方向和漏风量大小、不同瓦斯涌出源的涌出量大小、综放面瓦斯分布规律以及该工作面走向高抽巷和内错尾巷的瓦斯抽放效果。

The paper introduced the principle for the element method to measure the different gas source emission percentage and gas density distribution in the Bigger Mining-Length and fully mechanized coal mining face. According to the data measured with the element method, it can understand the direction of the ventilation leakage and value of the ventilation leakage in the coal mining face, the gas emission value of different gas emission sources, the distribution rule of fully mechanized top coal caving face gas and the gas drainage effect of high level suction roadway and inner interlocked tail road.