宿州学院学报2023，Vol.38Issue(12)：50-53,4.DOI:10.3969/j.issn.1673-2006.2023.12.010
煤岩成分对煤孔隙结构发育特征的影响
Influence of Coal Rock Composition on Pore Structure Development Characteristics of Coal:Taking Taoyuan Coal Mine Gas Coal as an Example
摘要
Abstract
In order to study the influence of coal rock composition on coal pore structure,primary structural coal samples were collected from Taoyuan mine field in Huaibei coalfield.Through low temperature nitrogen adsorption and desorption experiments,the relationship between coal pore structure parameters and coal rock composition was established.The results show that dark coal has the highest adsorption capacity(2.8 cm3/g STP),followed by bright coal(1.6 cm3/g STP)and mirror coal(1.2 cm3/g STP).Dark coal has the largest specific surface area(1.01 m2/g)and pore volume(0.004 4 cm3/g),followed by bright coal(0.80 m2/g and 0.002 5 cm3/g),and mirror coal has the smallest(0.47 m2/g and0.001 9 cm3/g).The pore volume and specific surface area of medium pore and transition pore of dark coal are obviously higher than those of bright coal and mirror coal.The contribution of micropore contrast area was the largest,followed by transition pore and mesopores.The fractal dimension of pore vol-ume of dark coal,bright coal and mirror coal is 3.219 7,3.360 2 and 3.332 2 respectively,and the specific surface integral dimension is 2.923 6,3.199 2 and 3.134 5 respectively.The pore of dark coal is more complex than that of bright coal and mirror coal.关键词
煤/显微组分/吸附/孔隙结构Key words
Coal/Maceral/Adsorption/Pore structure分类
天文与地球科学引用本文复制引用
李建楼..煤岩成分对煤孔隙结构发育特征的影响[J].宿州学院学报,2023,38(12):50-53,4.基金项目
国家自然科学基金项目(41302274) （41302274）
国家火炬计划项目(2015GH030625). （2015GH030625）
