放顶煤开采顶煤冒放性研究

Research on top-coal caving in sub-level caving mining

以柳湾煤矿61107综放工作面为研究对象,采用加权法综合考虑煤层开采深度、顶板岩性、采放比、煤层节理裂隙、夹矸厚度及强度,得出了顶煤冒放性好的结论,为该煤矿放顶煤开采提供了理论依据。

In this paper,the 61107 fully-mechanized working face in Liuwan coal mine is taken as the research object. The weighted method is adopted to consider the coal mining depth,roof lithology,coal mining ratio,coal seam joint fracture,thickness and strength of gangue. It concludes that top-coal caving is good,which provides a theoretical basis for top-coal caving in the coal mine.