Waterlogging storage water surface rate partition processing method based on urban waterlogging basic information

Abstract

The invention discloses a waterlogging storage water surface rate partition processing method based on urban waterlogging basic information. The method comprises the steps that basic information suchas rainfall runoff coefficients, main duration rainfall statistical results and current water surface rates, input by a user, of a current region is acquired; obtaining a designed flood drainage flowaccording to the basic information and the rainfall flood process control information; obtaining a designed regulation and storage water depth according to the designed drainage flow and the basic information; obtaining a corresponding designed rainstorm duration according to the designed flood drainage flow or the designed regulation and storage water depth; designing rainstorm duration accordingto the designed flood drainage flow to obtain partition indexes; zoning threshold delimiting is conducted on the waterlogging storage water surface rate of the current region through zoning indexes,and a region division result is obtained; and outputing results of zone partition. According to the processing method, the calculation process can be simplified, the workload of multi-scenario adjustment is reduced, and the operability is high; and the design scheme of the urban flood drainage system can be optimized according to local conditions in combination with the partitioning result of theurban water surface rate.

Description

technical field

[0001] The invention relates to the technical field of urban planning, in particular to a method for partitioning waterlogging storage water surface ratio based on urban waterlogging basic information. Background technique

[0002] In urban water conservancy system planning or capacity review, it is often necessary to design schemes by setting different combinations of water surface rates and rainstorm durations. The conventional average exclusion method is a method that is often used. The conventional average exclusion method that does not consider the process of rain and flood has shortcomings in practical application: because it is only based on the water balance of the total period of design rainfall, if the design rainfall lasts for a long time, the calculation results obtained are difficult to adapt to concentrated heavy rainfall; The waterlogging surface rate is high, and the calculated drainage-storage ratio is too small to meet the normal drainage ne...

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