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一、前言 任何长壁工作面都有一个不必考虑安全的最高产量指标。这一极限产量是在实际最大排水量始终保持不变,不需要更多的空气流过工作面,也不产生环境问题时达到的产量。 本文着重探讨在美国煤矿现有通风方法的局限性和在后退式采区中瓦斯流动可控方法的实际应用。强调在规划期间需要利用瓦斯预测技术,并认为准确控制瓦斯是控制开采方法的一个实质部分。如果生产,规模有明显变化,那么技术人员必须做好准备实验新的瓦斯排放技术,并改进巷道布置。
I. INTRODUCTION Any longwall face has a maximum yield that does not have to be considered safe. This limit yield is the amount of output that is achieved when the actual maximum displacement remains constant, no more air is required to flow through the work surface and no environmental problems arise. This article focuses on the limitations of the existing ventilation methods at coal mines in the United States and the practical application of controllable methods of gas flow in a back-up mining area. Emphasizing the need to utilize gas prediction techniques during planning and believe that accurate gas control is an essential part of controlling the mining method. If the production, the scale has changed significantly, then technicians must be prepared to experiment with new gas emission technology, and improve the layout of the roadway.