correlation of coal seams 煤层对比
Sampling of coal seams 煤层煤样采取方法
Coal Seams Geological Characters 矿区煤层系地质特征
adjacent coal seams 近距离煤层或煤层群
high gas coal seams 高瓦斯煤层
stress of coal seams 煤层应力状态
The largest shallow coal field in the world is in west China. The coal seams have thin roof and thick sandy overburden.
西部地区拥有储量最大的浅埋煤田,煤层顶板主要特点是基岩薄,地表为厚砂土层。
参考来源 - 浅埋煤层地表厚砂土层“拱梁”结构模型研究·2,447,543篇论文数据,部分数据来源于NoteExpress
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