steep coal seam

The horizontal section top coal caving in steep seam is different from the gently inclined seam.

急斜煤层水平分段放顶煤开采与缓斜煤层不同,工作面沿煤层厚度的水平线布置,长度短.

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Study on Avenue of Damage Transmission caused by mining in Steep and Steep and Specially Thick Coal Seam Mining

急斜特厚煤层开采采动损害传递途径研究

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Managed pressure drilling applied to horizontal wells targeting carbonate gas reservoirs in middle Tarim Basin Analysis of instability characteristics of surrounding rock within horizontal section caving face in steep coal seam

塔中地区碳酸盐岩储层控压钻水平井技术急斜煤层水平分段综放开采围岩失稳特征分析

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Study on Time Process of Ground Movement in Steep Coal Seam Mining

急倾斜煤层开采地表移动时间过程研究

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It is pointed out that the law of main roof beak in top caving in steep and thick seam initially occur at the middle of exposed main roof surface and expand along the face advancing direction which is different from it in gently inclined coal seam.

指出急斜特厚煤层放顶煤开采顶板破断不同于缓倾斜煤层顶板破坏规律，破坏首先在顶板裸露面中部开始，沿工作面推进方向发展。

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Thin Seam Coal Mining of Steep Slope and Short Distance

急倾斜近距离薄煤层的开采

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