开采复合煤层的顶板管理在技术上和管理上的难度都是较大的。本文从二井26采区的实践认为,复合煤层顶板冒落规律是在机头和机尾处,回柱放顶和整体移溜时的空顶处、工作面上、下安全出口及放炮地点等都易发生冒顶。文章对这些易冒顶地区所采用的措施进行了阐述。 Roof mining complex mining management in the technical and management of the difficulty are greater. This article from 26 wells mining practice that the composite roof caving law is at the nose and tail at the back of the column roof and the overall migration of the top of the empty when the work surface, the next safety exit and blasting location Are prone to fall. The article elaborates on the measures adopted in these prone areas.