瓦斯抽放方法相关论文
<正> With the characteristics of coal seam geology and gas occurrence,a'ground-underground' integrated gas drain......
<正> Based on the characteristics of the coalfield geology and the distribution of coalbed methane (CBM) in China,the ge......
山西王家峪煤业有限公司矿井瓦斯抽放方法选择15号煤层回采工作面,采用双侧顺层钻孔的布置方式进行工作面预抽,采用顶板走向高抽巷......
设计高效开采瓦斯煤层工作面的特点是计划产量符合瓦斯因素的要求。在这样采区的风量不能增大，因为在回采巷遭中受到最大通风速度或......
介绍了在低透气性“三软”难抽放厚煤层且又是滑动构造带顶板条件下的采面瓦斯抽放方法，指出了在此种顶板条件下冒落裂隙带高度的特......
<正>In order to improve the efficiency of gas drainage before and during longwall extraction,a waterjet rotary cutting s......
Application and development of numerical simulation for under- ground horizontal directional drillin
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