晋煤集团长平公司3号煤层顶底板特征的研究

Study on Characteristics of Top and Bottom of No.3 Coal Seam

以长平矿3号煤层作为研究对象,根据力学实验数据及对3号煤层顶底板进行工程地质分类。3号煤层顶板有软弱破碎顶板、周期来压顶板、周期来压强烈顶板和坚硬砂岩顶板四种类型,底板有普通底板和软弱破碎底板两种类型,并以普通底板为主。

Taking No.3 coal seam of Changping Mine as the research object,according to the mechanical experimental data and the engineering geological classification of the top and bottom plate of No.3 coal seam,there are four types of coal seam roof:weak broken roof,periodic pressure strong roof and hard sandstone roof.There are two types of floor:ordinary floor and weak broken floor,and the main type is ordinary floor.