煤矿在开采过程中,不可避免地产生甲烷等灾害气体,使整个作业环境处于爆炸性气体环境中。在煤矿井下根本不可能阻止煤岩体释放瓦斯等灾害气体,只能采用强迫通风稀释瓦斯、抽放瓦斯以减少瓦斯向作业环境中的涌出量等防范措施。 Coal mines in the mining process, inevitably produce methane and other disastrous gases, so that the entire operating environment in an explosive gas environment. In coal mines, it is impossible to stop the release of gas and other disaster gases from coal and rock mass. Only the measures such as forced ventilation to dilute gas and gas drainage to reduce gas emission into the working environment can be adopted.