2) horizontal section top coal caving
水平分段放顶煤
1.
Basic roof and immediate roof of horizontal section top coal caving were beside the working face in steep seams.
运用弹性薄板理论对急斜煤层水平分段放顶煤开采基本顶岩层进行拉应力分析,得出了顶板破断的判别准则。
2.
Characters of surface subsidence have been researched by means of large solid experiment frame in mining horizontal section top coal caving in steep seams.
借助急斜煤层大型立体模拟试验架,对急斜煤层水平分段放顶煤开采地表变形破坏特征进行了开采的立体模拟试验研究。
3.
The destruction process of upper-layers was simulated by means of strata failure process analysis system(RFPA2D) in order to make clear the cause of fire in working face in horizontal section top coal caving.
堵塞漏风供氧通道以消除采空区残煤自然发火的外部因素有助于急倾斜水平分段放顶煤开采的安全生产。
3) sublevel height of top coal
顶煤分段高度
5) high section caving
高阶段放顶煤开采
6) top-coal caving
放顶煤
1.
Discussion on support and design of the powered support for the top-coal caving of up-dip mining face;
放顶煤仰采工作面液压支架支护与设计探讨
2.
A study on top-coal caving technology in thick seams with fully mechanized face;
厚煤层综采放顶煤工艺研究初探
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