The main considering factor of set of GIL compartment in high drop vertical shaft is pressure difference,and the pressure difference can be calculated by theory of static gas column.Through the engineering design studies and theoretical calculations,it shows that the height of pure SF_6 gas compartment should not be more than 250m,and the less pressure difference of SF_6 mixture gas has less impact on the height of GIL compartment.Since the influence of pressure difference,it should provide two inflatable p...