准备巷道
supporting techniques of preparation roadway for fully mechanized sublevel caving in the easily spontaneous combustion coal seam
易自燃煤层综放开采采准巷道支护技术研究
get out some conclusion by researching the compound roof separation process and mechanism of preparation roadway under high horizon stress.
通过对高水平应力条件下采区准备巷道复合顶板的离层过程和机理进行研究,得出了相关结论。
preparation roadway support technique in extremely soft seam
极软煤准备巷道支护技术研究
research and practice of bolt support in preparation roadway
采准巷道锚杆支护的研究与实践
application and study on preparation roadway supporting technique of stress-concentrated swell outburst coal seam
高应力碎胀突出煤层准备巷道支护技术研究与应用
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