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列宁矿开采有突出危险的和煤层,厚度分别为5～5.6米和2～2.5米,煤层倾角介于5～12度之间,层理呈波浪状起伏不平。煤层结构复杂,由10层,而由含泥岩夹层的4个煤分层组成。下分层的煤较松软,结构多变。在开采这些煤层时,遇到小幅度的构造变动。 煤矿发生的气体动力学现象,分为煤和瓦斯突出(15.8％),巷道底板突然破裂(55.3％),工作面突出(23.7％)以及顶板突然冒落(散落) (5.2％)。上述大部分现象(89.4％)在沿煤层掘进时都发生过。突然破裂实际上主要
The coal mine in Lening has prominent coal seam with thickness of 5 ~ 5.6m and 2 ~ 2.5m respectively. Coal seam dip angle is between 5 and 12 degrees. The bedding is wavy undulating. The structure of the coal seam is complex and consists of 10 layers, but consists of 4 coal layers with mudstone intercalations. Lower stratification of coal softer, changeable structure. In the mining of these coal seams, encountered minor structural changes. The gas dynamics in coal mines are divided into coal and gas outburst (15.8%), sudden collapse of roadway floor (55.3%), prominent working face (23.7%) and sudden roof collapse (5.2%). Most of the above phenomena (89.4%) occurred along the coal seams. Sudden rupture is actually the main fact