1) coal roof
留顶煤
1.
Test of low slicing with coal roof in thick seam;
忻州窑矿厚煤煤层下分层留顶煤开采试验分析
2) top coal reserve
预留顶煤
3) remain partial upper coal
部分留顶煤
4) top-remaining
留顶
5) top coal
顶煤
1.
Research on loose blasting technology for top coal;
顶煤松动爆破技术的研究
2.
Analysis on three feature deformation parameters and multi damage of top coal in fully mechanized caving mining;
综放开采顶煤的三个特征变形参数及多次损伤分析
3.
Determination of working resistance of support under different top coal conditions;
不同顶煤条件下支架工作阻力的确定
6) roof-coal
顶煤
1.
From the influencing factors,the falling capability of roof-coal is studied systematically by finite element numerical analysis and observations in-situ.
从影响顶煤可放性的因素出发,结合现场观测,采用有限元数值分析方法,系统地研究了顶煤的可放性,并运用建立的顶煤可放性预测模型,对济宁二号煤矿的顶煤可放性进行了预测。
2.
This paper studies the failure mechanism of roof-coal in abutment presure according to the basic principle about rock deformation and roct mechanics.
本文以岩石力学关于岩石变形破坏的基本原理为基础,研究了在支承压力作用下顶煤破碎机理。
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