马兰矿12504和12503工作面间留设的窄小煤柱在经历12503回采时,煤柱上受有较大的载荷,但煤柱留设为8m时,其稳定性良好。窄小煤柱在工作面回采后,煤体上形成了大范围的破坏区,但破坏区域并未贯通,可适当对煤柱进行加强支护。12503工作面回采时,靠近采空区的回采巷道,尤其是靠近采空区的帮部和顶板,应该进行加强支护。 The narrow pillars left between the 12503 and 12503 working faces of Malan Mine experienced a large load on the pillars when they were subjected to the 12503 excavation. However, when the pillars were left at 8m, their stability was good. After the small coal pillars are recovered in the working face, a large area of ​​damaged area is formed on the coal body, but the damaged area is not penetrated, and the coal pillar can be properly supported. 12503 Face When mining, close to the goaf mining roadway, especially near the mound and the Ministry of the Ministry of the roof should be strengthened support.