综采工作面一般走向较长,为行人、通风、运输方便经常掘进联络石门,但过穿心石门的情况不多见,尤其在薄煤保护层中牵涉到瓦斯治理的难度。本文针对5121C15薄煤保护层综采工作面在回采过程中穿过-780中央石门,在顶、底板管理和“一通三防”管理方面采取的安全技术进行了总结,具有一定借鉴意义。 Fully mechanized mining face generally longer, for pedestrians, ventilation, transportation and easy access to stone doorway, but the pass through the stone door is rare, especially in the thin coal protection layer involves the difficulty of gas treatment. In this paper, 5121C15 thin coal seam protective layer fully mechanized mining face in the process of mining through the Central Gate -780, top, floor management and “one through three ” management of safety techniques are summarized, with some reference.