煤层瓦斯含量与煤层埋藏深度之间的定量关系
Quantitative Relationship Between Gas Content and Burial Depth of Coal Seam
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摘要: 为了研究煤层瓦斯含量与煤层埋藏深度之间的关系，以对高瓦斯及突出矿井进行瓦斯含量的准确预测，利用理论推导与现场试验结合的方法对煤层瓦斯含量与煤层埋藏深度之间的定量关系进行了分析。分析结果表明，随着煤层埋藏深度的增加，瓦斯含量不断增加；现场试验结果显示，在瓦斯风化带以下，随着煤层埋藏深度的增加，瓦斯含量呈上升趋势；但随煤层埋藏深度的不断增加，瓦斯含量的增加速度却不断减小，到达一定的煤层埋深后，瓦斯含量趋近于某一固定值。由此可得出，煤层埋藏深度在一定范围内，煤层瓦斯含量与煤层埋藏深度呈正比关系，但随着埋藏深度的增加，正比例系数逐渐减少，瓦斯含量基本保持不变。Abstract: In order to study the relationship between gas content and coal seam buried depth and accurately predict the gas content of high gas and outburst coal, the method of theoretical derivation and field trials are used to analyze the relationship between gas content and coal seam buried depth. The theoretical analysis results show that gas content gradually increased with the increase of coal seam buried depth. The field test results show that the gas content takes a upward trend with the increase of burial depth of coal seam below the gas weathered zone. However, with the increase of coal burial depth, gas content increase speed is decreasing, and gas content reaches a certain value when burial depth closes to a fixed value. It can be drawn from the seam buried depth within a certain range, a positive correlation is presented between the gas content and coal seam buried depth. The coefficient in proportion would gradually reduce with the burial depth, then the gas content remained unchanged.
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Keywords:
- gas content /
- coal seam buried depth /
- gas pressure /
- proportional coefficient /
- gas control
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