The invention relates to a
subway station flood disaster early warning evaluation method, which comprises the following steps of S1, establishing a subway flood disaster early warning data real-time dynamic
evaluation system, and establishing an
expert group; s2, proposing an early warning index grading quantitative characterization method, and constructing a flood disaster potential severity
index system, a flood disaster
vulnerability index system and a flood disaster prevention and disaster resistance
index system; s3, researching the relationship between the average hourly rainfall capacity and the
ponding depth, and realizing conversion between rainfall meteorological information and a
ponding depth predicted value; s4, respectively evaluating the
vulnerability and the disaster prevention and resistance capability by adopting AHP and
TOPSIS methods, and calculating the early warning index weight and the relative closeness; s5, calculating a comprehensive early warning value based on the
coupling influence relationship of the three types of indexes; and S6, determining an early warning grade based on the comprehensive early warning value, and realizing dynamic graded early warning. According to the method, a grading early warning index
system is constructed, a grading quantitative characterization method of each index is provided, and theoretical support and actual guidance can be provided for advanced prediction early warning and accurate response disposal of subway flood disasters.