1) pitching oblique mining(POM)
俯伪斜采煤法
2) oblique sublevel concentration coal mining method
俯伪斜分段密集采煤法
1.
Numerical simulation on oblique sublevel concentration coal mining method of Datai Mine;
大台井俯伪斜分段密集采煤法数值模拟研究
3) downhill mining
俯斜采煤法
4) coal and gas outburst / Oblique underhand mining
煤与瓦斯突出/俯伪斜采煤法
5) oblique mining
伪俯斜开采
6) pitching oblique mining
俯伪斜开采
1.
Aimed at the problem on protection scope demarcation of upper steeply inclined protective seam of pitching oblique mining,based on the method of three dimensional fast Lagrange method,the dynamic development process of stress distribution and deformation of protected coal seam with exploitation of steeply inclined protective seam of pitching oblique mining were simulated using FLAC~(3D).
针对急倾斜煤层上保护层俯伪斜开采的保护范围划定问题,采用三维快速拉格朗日法,通过模拟上保护层俯伪斜开采后被保护层的应力场及变形场的动态发展过程,确定了随着上保护层工作面的推进,被保护层的垂直层理面应力和煤层变形规律;根据上保护层开采后的应力卸压保护准则和煤层变形保护准则,确定了上保护层沿走向和倾向的保护范围。
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