采空区遗煤中残余瓦斯解吸特征研究  

Study on the Desorption Characteristics of Residual Gas of Abandoned Coal in Goaf Areas

作　　者：李帅魁 LI Shuaikui(State Key Laboratory of Coal Mine Disaster Prevention and Control,CCTEG Shenyang Research Institute,Liaoning 113122,China)

机构地区：[1]中煤科工集团沈阳研究院有限公司煤矿灾害防控全国重点实验室,辽宁沈抚示范区113122

出　　处：《煤》2025年第5期17-21,共5页Coal

基　　金：国家自然科学基金项目(52174230,52174229);辽宁省自然科学基金项目(2023-MS-355)。

摘　　要：借助耦合试验台模拟了采空区漏风后在不同初始温度和压力条件下遗煤中残余瓦斯的解吸特征。结果显示,瘦煤和肥煤的解吸量在0.5 MPa下随着温度的升高而降低,从30℃到140℃分别降低了81.8%,76.5%;在30℃下,解吸量随着压力的升高而增加,从0.5 MPa到3.0 MPa分别增加了160.9%、248.5%.在温度压力耦合条件下,整个实验过程中,瘦煤在同一压力下相同的温差,解吸量的减少幅度大于在同一温度下相同的压差增幅,说明整个温度的抑制作用显著大于压力的促进作用;同时验证了Airey的经验公式在高温高压下的适用性。研究成果能够丰富瓦斯与火耦合灾害的研究内容。The desorption characteristics of residual gas in the relict coal under different initial temperature and pressure conditions after air leakage from the mining zone were simulated with the aid of a coupled test rig.The results showed that the desorption amount of lean coal and fat coal decreased with the increase of temperature at 0.5 MPa,from 30℃to 140℃by 81.8%and 76.5%,respectively;at 30℃,the desorption amount increased with the increase of pressure,from 0.5 MPa to 3.0 MPa by 160.9%and 248.5%,respectively.Under the condition of temperature-pressure coupling,the decrease of desorption amount for the whole experimental process of lean coal with the same temperature difference at the same pressure is larger than the increase of desorption amount with the same pressure difference at the same temperature,which indicates that the inhibition effect of the whole temperature is significantly larger than the promotion effect of the pressure;meanwhile,the applicability of the empirical formulae of Airey at high temperature and high pressure is verified.The research results can enrich the research content of gas-fire coupling disaster.

关 键 词：遗煤 残余瓦斯 温度压力耦合 解吸规律 采空区 

分 类 号：TD712[矿业工程—矿井通风与安全]