搜索结果: 1-1 共查到“安全科学技术其他学科 Hard coal”相关记录1条 . 查询时间(0.046 秒)
Study on difference of outburst elimination effect between sub-layers of soft coal and hard coal under the condition of gas per-drainage q
Soft coal Hard coal Drainage gas of coal seam Effect of outburst elimination Difference
2012/3/28
The effect of drainage and outburst elimination are obviously different between soft and hard coal sub-layers under per-drainage of coal seam, and hence, the location of per-drainage borehole related ...