采空区充填开采为“三下”煤炭的合理开采创造了条件。
The mining with filling in goaf provides advantages for the rational mining of coal under buildings, railroads and water bodies.
文中叙述了大庄子金矿井下采空区充填工艺，介绍了充填过程中的技术措施，并提出了进一步改进设想。
The technical measures of the filling of mined out area employed in Dazhuangzi Gold mine were introduced and an assumption to improve it further was put forward.
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.
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