coal seam

The average UK coal seam is one metre thick.

英国煤层的平均厚度为1米。

柯林斯例句

Coal Mine, its coal seam is easily spontaneous fire.

大雁二矿煤种为褐煤, 属易自燃发火煤层.

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Factors affected coal seam permeability change and its law is analyzed.

分析了煤层透气性变化的影响因素及变化规律.

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The Gaussian curvature of No.3 coal seam in Qinshui basin is calculated.

计算了沁水盆地3号煤层的高斯曲率.

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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.

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Coal Mine and the coal seam 13 - 1 has especially complex hydrogeology condition.

新集二矿在特定推覆体水体下的煤层开采, 13-1 煤开采水文地质条件尤为复杂.

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On a global scale, there are many coalfields suffered from spontaneous combustion of coal seam problems.

在全球范围内, 许多煤田都存在煤层自燃问题.

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There are of forms of gas discharge , but the form is soft coal seam gas discharge.

目前在瓦斯抽放中急待解决的问题是软煤层瓦斯抽放的打钻技术,尤其是深孔打钻技术.

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This paper goes further into blast - winning technology of the composite coal seam face.

深入探讨了复合煤层回采工作面“松动放炮”落煤的工艺问题.

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This paper is a guide to precise determination of the content of coal seam methane.

对正确测定煤层瓦斯含量有一定的指导意义.

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The surrounding rock of roadways in soft coal seam has low strength and bad stability.

软煤巷道围岩强度低,稳定性差.

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Essential way of solving the gas drainage problem of low permeability coal seam is seam permeability.

高瓦斯低透性煤层的瓦斯抽放,一直是煤矿安全生产过程中的重大技术难题.

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Exploration evaluation coal seam gas is a base of coal seam gas exploration and developing.

煤层气的勘探评价,是开展煤层气勘探与开发工作的基础.

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Grave protrusion coal seam tunnelling hydraulic cutting protrusion - dispelling measures is a new technology in the world.

严重突出煤层掘进水力掏槽防突措施在国际上是一种防突新技术.

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The migrating methane by cross - borehole in coal seam is used in this condition.

交又钻孔抽放本煤层瓦斯正是在这种条件下产生的.

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