Casting body sheet pore radius dimension conversion method and reservoir pore structure characterization method

The invention relates to a casting body sheet pore radius dimension conversion method and a reservoir pore structure characterization method, and the method comprises the following steps: carrying out a casting body sheet pore characteristic experiment to obtain area frequency data corresponding to different pore radius intervals; performing trend fitting on the pore radius area discrete distribution data to obtain a continuous distribution curve; calculating apparent volume frequency data corresponding to different pore radius intervals; and correcting the radius from a mathematical expected value of a cut pore to a true value, and correcting a pore radius interval boundary value corresponding to the apparent volume frequency data to obtain final casting body sheet pore radius volume frequency distribution. According to the method, the conventional plane casting body sheet pore distribution characteristics are converted into the three-dimensional spatial characteristics, so that the dimension difference betw