大巷煤柱回收工作面过空巷工程实践与控顶技术研究

Research on the engineering practice and roof control technology for main roadway coal pillar recovery working face passing through overlying goaf

大巷煤柱作为矿山开采的遗留结构,对于资源的充分利用和矿井的高效生产有着重要影响,大巷煤柱回收技术应用成为一项关键挑战。以活鸡兔煤矿12号煤层三盘区大巷煤柱回收为实际工程背景,介绍了工作面过空巷采取的柔模泵送支柱支护技术与人工假顶施工的工程实践和控顶技术,为近似采场条件盘区近距离煤层群大巷煤柱回收技术提供借鉴。

As a retaining structure of coal mine mining,the main roadway coal pillar has a significant impact on the full utilization of resources and efficient production of mines,and the application of main roadway coal pillar recovery technology has become a key challenge.Based on the actual engineering background of the main roadway coal pillar recovery in third panel of the No.12 coal seam in Huojitu Coal Mine,the engineering practice and roof control technology of flexible-mold pumping support and artificial false roof construction technology adopted during the working face passing through overlying goaf were introduced,which provided reference for the main roadway coal pillar recovery technology in close-distance coal seam group with similar mining conditions.