The invention discloses a
simulation method of water inflow of urban
underground space. The
simulation method comprises the following steps that S1, basic parameters of the
underground space are acquired; S2, the topological relation between the
underground space and surface elements is established; S3, the water
inflow rate of the underground space is calculated; S4, the water accumulation depth of the underground space is calculated. The
simulation method is a simple and practicable method for simulating water inflow of the underground space; by combining the method with a surface flood simulation model, whether water inflow happens or not in the urban underground space and the flooding degree after water inflow can be quickly assessed. All basis data required for the method is the most basic feature parameters of the underground space and can be quickly acquired by means of image
remote sensing or specification design or field investigation in an area lacking data, and the method is easy to apply in an urban flood
risk assessment.