1) top coal recovery ratio
顶煤采出率
1.
Numerical simulation on top coal recovery ratio of fully mechanized top coal caving mining in gently inclined thick seam;
缓倾斜厚煤层综放开采顶煤采出率数值模拟
2) top coals' recovery ratio
顶煤放出率
1.
To set up the judgment rules of roof stability with the top coals′ recovery ratio is an important theoretical problem.
综放采场周期来压阶段,顶煤从垮落到放完是一个动态过程,采空区的充填程度影响着大厚度坚硬顶板的稳定性,因此,建立与顶煤放出率相关的顶板结构的稳定性判断准则是一个重要的理论课题。
4) Tower top produced rate
塔顶采出
5) coal mi ning quantity
采出煤量
6) top coal caving
放顶煤开采
1.
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。
2.
The mine adopts a coal demolish feebleization technique beforehand to implement top coal caving.
沈阳蒲河矿, 在煤层硬度系数f=2~3, 并含有夹矸层的复杂煤层中, 采用顶煤预爆破弱化技术, 成功地实施了放顶煤开采。
3.
Based on the physical phenomenon that the amount of the gamma ray radiation in rock is different from the amount of the gamma ray radiation in coal,the paper puts forward the method for coal rock detection in top coal caving.
基于岩层与煤层中存在的自然γ射线具有显著差异的特性 ,提出了用自然γ射线方法解决综采放顶煤开采放煤过程煤矸识别问题 ;分析了煤矿煤岩中自然γ射线分布特征及该方法的适用性 ;探讨了动态煤矸分界监测可行性和顶煤落放规律对煤矸识别的影
补充资料：综采放顶煤
综采放顶煤：厚煤层煤炭开采技术之一。把原来分层开采的煤炭，一次采完。方法是，在煤层底部按传统方法开采，使上面的煤炭在矿压的作用下，自动落下来。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条