1) high section caving
高阶段放顶煤开采
2) high seam caving mining
大采高放顶煤开采
3) 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
4) sub-level caving mining
放顶煤开采
1.
Based on conditions of Gengcuen coal mining (二 3)coal with sub-level caving mining.
以义马耿村矿二3煤放顶煤开采条件为基础 ,应用相似材料模拟方法 ,研究了开采后上覆岩层运动的过程、变化及特点 ,探讨了上覆岩层运动的规律 ;根据模拟结果 ,分析了开采范围内支承压力峰值的变化及对顶煤破碎的影响。
5) caving method
放顶煤开采
1.
The ground behavior regularity of caving method coal face on “soft seam with soft surounding”and extremely unstable seam and the optimization of support patterns;
“三软”极不稳定煤层放顶煤开采工作面矿压规律及支护方式优选
6) sublevel caving
放顶煤开采
1.
The numerical analysis on the stress distribution and the displacement of the top coal in sublevel caving mining;
FLAC在放顶煤开采顶煤变形与移动特征研究中的应用
2.
Research on the possibility of enhancing the upper extraction limit with sublevel caving method under the highly thick hydrous ravelly stratum;
巨厚含水松散层下放顶煤开采提高回采上限的可行性研究
补充资料：高放
1.清高而豪放。
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