综采面瓦斯来源与浓度分布单元法测定及分析

Element method measurement and analysis on gas resources and gas distribution in fully mechanized coal mining face

论述了单元法测定综采面各种瓦斯涌出源比例以及瓦斯浓度分布的方法原理 ,通过现场应用 ,该方法不仅原理正确 ,而且简单易行 ,易于推广。根据单元法实测数据可知 :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以及局部瓦斯积聚状况。同时根据煤壁侧的瓦斯浓度测定可分析易于发生瓦斯动力现象区域 ,因此 ,单元法测定为分析综采面的瓦斯涌出状况和制定有效的防治措施提供了有效的手段。

The paper introduced the principle for the element method to measure the different gas source emission percentage and gas density distribution in fully mechanized coal mining face. The site applications showed that the principle of the method is not only correct, but easy to apply and promote. 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 and the local gas accumulation. According to the gas density at the side of the coal wall, it can measure the area in potential to have a gas dynamic phenomenon. Therefore the element method has provided an effective means to analyze the gas emission status in the coal mining face and to establish an effective prevention and control measures.