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颜志丰,许健,辛雨萌.基于液氮吸附实验的煤层夹矸孔隙结构特征研究[J].河北工程大学自然版,2019,36(1):64-68
基于液氮吸附实验的煤层夹矸孔隙结构特征研究
Study on Pore Structure Characteristics of Gangue in Coal Seam Based on Liquid Nitrogen Adsorption Experiment
投稿时间:2018-10-24  
DOI:10.3969/j.issn.1673-9469.2019.01.014
中文关键词:  新景煤层夹矸  孔径占比  孔径  比表面积
英文关键词:Xinjing coal gangue  aperture ratio  aperture  specific surface area
基金项目:国家自然科学基金资助项目(41772159);河南省矿产资源绿色高效开采与综合利用重点实验室开放基金资助项目(S201604)
作者单位
颜志丰 河北工程大学 地球科学与工程学院, 河北 邯郸 056038 
许健 河北工程大学 地球科学与工程学院, 河北 邯郸 056038 
辛雨萌 河北工程大学 地球科学与工程学院, 河北 邯郸 056038 
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中文摘要:
      煤层夹矸存在孔隙,具有吸附气体的能力。为研究沁水盆地新景矿煤层夹矸孔隙特征,选择8#煤层夹矸和15#煤层夹矸进行液氮静态吸附法实验研究。根据实验结果对新景煤矿8#煤层夹矸和15#煤层夹矸孔隙结构特征中的比表面积、孔径、孔径占比进行分析。结果表明:新景8#煤层夹矸主要以微孔和小孔为主,微孔和小孔占总孔比的92%以上,新景15#煤层夹矸主要由微孔、小孔和中孔为主,微孔、小孔占67%,中孔占到32%左右。微孔、小孔孔径大小与比表面积和吸附量有较强的相关性。
英文摘要:
      There are pores in the gangue of coal seam, and it has the ability of adsorbing gas. In order to study the pore characteristics of coalbed gangue in Xinjing Coal Mine of Qinshui Basin, the experimental study on static adsorption of liquid nitrogen was carried out by selecting gangue from seam 8# and gangue from seam 15#. According to the experimental results, the specific surface area, pore diameter ratio and aperture in the pore structure characteristics of gangue in No. 8# coal seam and No. 15# coal seam in Xinjing Coal Mine are analyzed. The results show that the gangue in Xinjing 8# coal seam is mainly composed of micropores and small holes, which account for more than 92% of the total holes. The gangue of Xinjing 15# coal seam is mainly composed of micro hole, small hole and middle hole. The proportion of micro hole and small hole is 67%, and that of middle hole is about 32%. The size of micropore and pore size has a strong correlation with the specific surface area and adsorption capacity.
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