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Correlation between coal and gas outburst risk and adsorption properties of coal seams

机译：煤与瓦斯突出风险与煤层吸附特性的相关性

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Based on the Langmuir adsorption model, the adsorption constants of eighteen coal samples from the same coal mine with outburst risk, weak outburst risk, and non‐outburst risk were tested by high‐pressure capacity method under different temperature conditions. The results show that the adsorption constants a and b monotonically decrease with the increase in temperature. The relationship between a and temperature shows three stages: accelerated decreasing stage, decelerated decreasing stage, and stable stage. The b decreases with the increase in temperature also shows three stages, namely relative stability, slow decrease, and accelerated decrease. The a?×?b for the outburst coal seam decreases with increasing temperature, which is similar to b . The a?×?b for the weak and non‐outburst coal seams decreases with increasing temperature, which is similar to a . Furthermore, the a of the outburst coal seam decreases with the increase in temperature, and the decrease of b is the largest. The a of the weak and non‐outburst coal seams decreases with the increase in temperature, and the magnitude is relatively large. The b decreases slightly, with a smaller magnitude. The a ?×? b of weak outburst seam is smaller than that of non‐outburst seam and is larger than that of outburst seam. The achievements can provide guiding significance for coal and gas outburst prevention and control.
机译：基于Langmuir吸附模型，通过高压容量法在不同温度条件下，测试了18个具有突出危险，弱突出危险和非突出危险的煤矿样品的吸附常数。结果表明，随着温度的升高，吸附常数a和b单调降低。 α与温度的关系表现为三个阶段：加速下降阶段，减速下降阶段和稳定阶段。 b随温度升高而降低也表现出三个阶段，即相对稳定性，缓慢降低和加速降低。随温度升高，突出煤层的a？×？b减小，与b相似。弱和非突出煤层的a？×？b随着温度的升高而减小，这与a相似。此外，突出煤层的a随着温度的升高而减小，而b的减小最大。弱，非突出煤层的α随温度的升高而减小，且幅度较大。 b稍微减小，幅度较小。一个？×？弱突出煤层的b小于非突出煤层的b，大于突出煤层的b。这些成果对防治煤与瓦斯突出具有指导意义。

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