steep seam

Mechanical model analysis of failure in steep seam mining

急斜煤层开采老顶破断力学模型分析

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

The caving roadway location analysing of roadway sub-level caving in steep seam

急倾斜煤层巷道放顶煤放煤巷道合理定位分析

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。

Adaptability Analysis of Powered Support in Longwall Top-coal Caving Minging of Steep Seam

急斜煤层综放开采中液压支架适应性分析

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

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.

Approach on mining processing in steep dip middle-thick seam

关于急倾斜中厚煤层开采工艺的探讨

Study of discontinuous surface deformation induced by steep seam mining with similar material model test

急倾斜煤层开采非连续变形的相似模型实验研究

Thin Seam Coal Mining of Steep Slope and Short Distance

急倾斜近距离薄煤层的开采