贵州省煤矿瓦斯赋存规律研究

Study on occurrence regularity of gas in the mines of Guizhou province

贵州省煤矿多处于复杂地质地形条件的山区,矿井中煤层瓦斯含量大,"高突"矿井数量占的比例较大,瓦斯灾害严重。选取煤层埋深这个矿区内影响煤层瓦斯含量变化的重要因素与煤层瓦斯含量之间的关系进行灰色分析和回归,通过研究复杂地质地形条件下"高突"矿井瓦斯含量与煤层埋深的实测数据,发现瓦斯含量与埋深符合对数函数规律,即随着煤层埋深的增加,瓦斯含量逐渐增加,增加的速率逐渐减小,直至煤层瓦斯含量不再增加。

Most coal mines in Guizhou Province are in complicated geologic and topographic mountainous areas. The gas content of coal seam is large. The relationship between thickness of the coal seam which is the important factor influencing gas content of coal seam and the coal seam gas content was analyzed by the gray fitting. From survey data of gas content and seam depth in these high gas and outburst mines under complicated geologic and topographic mountainous areas, it was found that the gas content and depth fitted the law of a logarithmic function, the gas content generally increased with depth, and the rate of increase gradually decreased.