采场软岩支护现状分析及对策《河北煤炭》１９９４年第１期刊登井陉矿务局一旷黎盛星等同志的文章，分析了井陉矿务局一矿采场软岩支护现状及采取的对策。井陉煤田煤系地层为石炭二叠系，其中太原组厚８５ｍ左右，含煤５层，自上而下命名为一、二、三、四、五层煤。其中三... Analysis of the status quo of soft rock support in quarry and its countermeasures “Hebei Coal”, No.1, 1994, published an article written by a comrade Li Sunsheng of Jingjing Mining Bureau and analyzed the status quo of soft rock support in the first stope of Jingjing Mining Bureau and taken Countermeasures. The coal strata of Jingtai Coalfield is Permo-Carboniferous, in which the Taiyuan Formation is about 85m thick and contains 5 layers of coal, which are named as one, two, three, four and five layers coal from top to bottom. Three of them ...