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概况 矿区煤系地层为中下侏罗纪内陆盆地碎屑沉积,岩层为泥岩、粉砂岩、砂岩和砾岩组成,其中以泥岩和粉砂岩为主;煤层底板部份的泥岩和粉砂岩遇水膨胀,存在严重的底鼓现象。因此,在岩层中布置集中巷道相当困难,往往集中巷道不得不布置在煤层中。
At a Glance The coal measures in the coal mines are clastic sediments in the middle-lower Jurassic inland basin. The rock layers are composed of mudstone, siltstone, sandstone and conglomerate, of which mudstone and siltstone are the main features. The mudstone and siltstone of the coal seam floor Water swelling, there is a serious kick drum phenomenon. Therefore, it is quite difficult to arrange the concentrated roadway in the rock formation, and often the concentrated roadway has to be arranged in the coal seam.