阳煤集团长期实施“煤与非煤并重、做大与做优并举”战略，“144”产业结构基本形成。
Yangquan coal Group long-term implementation, "both coal and non-coal, both big and excellent" strategy, "144" basic formation of the industrial structure.
放顶煤工作面与非放顶煤工作面的区别是，采空区充填系数小，顶板岩层运动剧烈，走向方向超前支承应力峰值较大。
The differences between the coal drawing face and non-coal drawing face are low stowing factor in the goaf, vigorous movement of roof, and high stress peak abutment pressure along the strike.
煤岩体的电磁辐射是由于非均质煤岩体在应力作用下非均匀变速变形及裂纹形成与扩展过程中，内部电荷的迁移而产生。
EME occurred when inhomogeneous coal or rock is loaded at uneven speed with the moving of internal electrical charges during the development of cracks.
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