The improper degree of facility damage risk/ human injury risk is to evaluate the safety rationality of the locations of the high-personnel density, high-economy density facilities. From analysis, it can be known that:
(1) Facilities’ locations should be determined by their importance. If a more important facility, e.g. high-personal density facility, was located at a position with high damage risk, and meanwhile a less important facility, e.g. high personal density facility, occupied a position with lower damage risk, it means the current layout is unreasonable,and a better layout can be gotten by further optimal design.
(2) The lower the damage risk of the locations of high-personal density and high-economic density facilities, the better the safety performance is.