急斜水平分段放顶煤放煤实验研究

Testing study of cracked top coal caving for horizontal section top coal caving in steep seam

本文分析了急斜煤层顶煤放出过程与缓斜煤层的不同,应用模拟急斜煤层顶煤放出的专用模拟实验架,对急斜特厚煤层水平分段放顶煤开采破碎顶煤的放出进行了实验研究,着重探讨了急斜煤层破碎顶煤的放出规律,以及在保证合理采出率前提下提高产量效益的技术途径。认为在煤层倾角较大的煤层,应适当提高分段高度。

This text has analyzed the steep seam caving the top coal of course different from gently inclined seam, use similar material simulation testing rack for horizontal section top coal caving in steep seam, to crack top coal caving for horizontal section top coal caving in steep seam on testing study. We have probed into the top coal caving law in steep seam emphatically, and researched technological way to raise output, extraction ratio of benefit rationally to guarantee. We have thought that should improve the height of subsection properly in the coal seam with bigger coal seam inclination.