Total porosityofcoal gangue cement paste is higher but its pore size at later age is smaller than that of reference cement paste.
与基准水泥浆体相比，煤矸石水泥浆体总孔隙率有所上升，但其孔径后期有所细化。
2
According to the coal sample's pore fractal laws, the porosityofcoal is divided into three categories: infiltration pore, diffusion pore and adsorption pore.
这三类孔同时也对应了瓦斯等气体在煤中的不同的运移状态。
3
Tests show that coal with larger porosity, lower strength and higher velocity of gas desorption is more dangerous in hazard of outburst.