The average coal seam here is three feet thick.
这里的煤层平均为3英尺厚。
The average UK coal seam is one metre thick.
英国煤层的平均厚度为1米。
The permeability of coal seam is the crucial problem.
煤层气储层的渗透性是煤层气开发的关键。
There is a certain angle between caving line and coal seam strike.
垮落线与煤层走向是一定角度。
Finally, the risk zone of rock burst in No. 3 coal seam is evaluated.
在此基础上对该矿3号煤层冲击地压的区域危险性进行了评价。
The spontaneous combustion of coal seam endangers the safe production.
井下煤层自燃严重危害着安全生产。
The gas distributed rule of coal seam is the base of preventing gas hazard.
煤层瓦斯赋存规律研究是瓦斯灾害防治的基础。
The sliding phenomenon between coal seam and its roof or floor is very common.
煤层及其顶底板中滑动现象极为普遍。
Roof control is key management of opening up coal seam with potential outburst in crosscut.
顶板管理是石门揭露突出煤层过程中的管理重点。
Traditional coal depositional model can hardly explain the cause of this extra-thick coal seam.
传统的煤沉积模式难以解释其超厚煤层的成因。
In the gas accident, Opened outburst coal seam caused accident harm which is particularly serious.
在瓦斯事故中，揭开突出危险煤层造成的突出事故危害尤为严重。
The hot new product in Queensland, though, is coal-seam gas.
然而目前昆士兰最热门的新产品是煤层气。
The seam water injection is an effective measure to control coal dust concentration.
煤层注水是降低矿井粉尘浓度的有效措施之一。
The seam water injection is an effective measure to control coal dust concentration.
煤层注水是降低矿井粉尘浓度的有效措施之一。
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