Characterization and analysis of pores and fissures of high-rank coal based on CT three-dimensional reconstruction
WANG Gang
SHEN Junnan
CHU Xiangyu
CAO Chunjie
JIANG Chenghao
ZHOU Xiaohua
Abstract：To effectively study the characteristics of coal pore and fissures,the pore and fissures of coal were characterized by qualitative and quantitative characterization and analysis.The coal sample of 311102 working face in Bayangaole Colliery of Inner Mongolia was studied.Based on the IEISS Xradia 510 X-ray microscope Get the CT data.The mathematical algorithm was embedded in the three-dimensional visualization software AVIZO.The study proposed the methods of quantitative characterization of pore and fissure and set up a three-dimensional model of pore and fissure of coal and a pore network model with topology structure.The coal sample microscopic parameter of pore and fissures includes pore size,pore volume,porosity,coordination number and length of throat.The results show that under the micron scale the coal samples of Bayangaole Colliery are mainly in macroporous and have a cleat network.Its effective porosity is 10.34％.The number of pores is 12 834,and the number of throats is 432.These are calculated by the pore network model.
Keywords：high-rank coalCTthree-dimensional reconstructionpore and fissurecharacterization
Publication Date：2017-01-01
Pages：7( 2074-2080 )