基于T-P模型的高低温环境型煤对甲烷吸附性能预测

为预测深部或浅部煤层不同温度和不同压力条件下的吸附等温线，选用型煤以高低温试验装置为依托，测试了温度为293.15，273.15，253.15 K的吸附等温线。基于T-P模型，利用等温吸附曲线对公式中的参数进行了合理的求解，探讨了一种简单的煤对瓦斯吸附等温线预测方法。研究表明:同一吸附平衡压力下，温度越低，煤的瓦斯吸附量越大；ε－ω吸附特征曲线与温度无关，呈现对数的形式；参数m和拟合度R2满足抛物线的关系，存在拟合效果最好时的参数m值。采用T-P模型预测得到的吸附等温线与实测的吸附等温线无论是趋势还是定量结果均十分吻合，其相对误差不超过5%。

Prediction of methane adsorption performance for briquette in high and low temperature environment based on T-P model

In order to predict the adsorption isotherms of deep or shallow coal seams under different temperatures and pressures, the adsorption isotherms at different temperatures (293.15 K, 273.15 K and 253.15 K) were measured, which relied on the high and low temperature testing device with selecting the briquette. Based on the T-P model, the parameters in the formula were solved reasonably by using the adsorption isotherm curves, and a simple method for predicting the gas adsorption isotherms of coal was discussed. The results showed that under the same adsorption equilibrium pressure, the lower the temperature, the greater the adsorption quantity of coal. The ε－ω adsorption characteristic curve was independent of temperature, which appeared a logarithmic form. The parameter m and the fitting degree R2 satisfied with the parabolic relation, and there existed a value of parameter m when the fitting effect was the best. The adsorption isotherms obtained by the prediction using the T-P model agreed well with the measured adsorption isotherms both in the trend and the quantity, with the relative error without exceeding 5%.