煤矿安全2019，Vol.50Issue(9)：13-16,4.DOI:10.13347/j.cnki.mkaq.2019.09.006
瓦斯压力对煤体吸附-解吸变形特征影响试验研究
Experimental Study on Influence of Gas Pressure on Coal Adsorption/Desorption Deformation Characteristics
摘要
Abstract
Based on 8# coal seam of coal core samples of Yuyang Coal Mine of Songzao Coal and Power Company, the experiments of coal adsorption-desorption deformation were carried out under different gas pressures. The test result indicated that: the adsorption-desorption deformation dynamic curve of coal containing gas could be divided into vacuum compression deformation stage I, adsorption swelling deformation stage II, and desorbed shrinkage deformation stage III; the adsorption-desorption deformation of coal had obvious anisotropic characteristics. The ratios of horizontal and vertical deformation did not change significantly with time and pressure, and it tended to be constant;the volumetric deformation of coal containing gas increased linearly with the increase of adsorption/desorption pressure. At the same time, the longer the adsorption/desorption time, the greater the linear slope; the adsorption-desorption deformation was irreversible. The residual deformation increases with the gas pressure, and the vertical deformation provided more contribution to residual volume deformation.关键词
含瓦斯煤体/吸附膨胀/解吸收缩/残余变形/气体压力Key words
coal containing gas/adsorption swelling/desorption shrinkage/residual deformation/gas pressure分类
矿业与冶金引用本文复制引用
郭平..瓦斯压力对煤体吸附-解吸变形特征影响试验研究[J].煤矿安全,2019,50(9):13-16,4.基金项目
重 庆 市 基 础 与 前 沿 研 究 计 划 资 助 项 目(cstc2016jcyjA0085) （cstc2016jcyjA0085）
重庆市教学委员会科学技术研究资助项目(KJQN201803202) （KJQN201803202）
