摘 要：在复杂地质条件下，采用增大梯形棚岔角、巷道两帮开孔卸压等方法，减少巷道的维护量，有效的控制了巷道侧压显现，降低了巷道维修量，......

采用EBZ-260H综掘机在下分层巷道施工,利用施工工艺优化、超前穿楔控制顶板、前脸护网使用、物料运输和煤层防自燃发火等针对性安......

On the basis of practice this paper studies the effect mechanism of roadway sidepackings of slag-cement material with hi......

The horizontal distance X between roadway and the edge of its upper pillar is considered as an important parameter for l......