摘要：In the paper were made the verification of the operation of
a rainwater drainage system in the residential communities of Gaj and
Tarnogaj in Wrocław, carried out in the hydrodynamic model using SWMM
software. There were used two criterial precipitation: Euler’s model (with
a frequency of C = 3 years) and the actual precipitation (C = 5 years). The
criteria of overloading the system was the specific flood volume (SFV). For
both cases of precipitation load of catchment, the simulated calculations
showed the occurrence of outflows from the channels. Due to the value of
SFV indicator (respectively: 19 m3/ha and 42,9 m3/ha), it was found that the
tested system needs modernization, therefor acceptable instantaneous water
level above the maximum water impoundment were more often than 1 per
3 years, which leads to overflows from channels for residential areas more
often than allowed once every 20 years.
其他摘要：In the paper were made the verification of the operation of a rainwater drainage system in the residential communities of Gaj and Tarnogaj in Wrocław, carried out in the hydrodynamic model using SWMM software. There were used two criterial precipitation: Euler’s model (with a frequency of C = 3 years) and the actual precipitation ( C = 5 years). The criteria of overloading the system was the specific flood volume ( SFV ). For both cases of precipitation load of catchment, the simulated calculations showed the occurrence of outflows from the channels. Due to the value of SFV indicator (respectively: 19 m3/ha and 42,9 m3/ha), it was found that the tested system needs modernization, therefor acceptable instantaneous water level above the maximum water impoundment were more often than 1 per 3 years, which leads to overflows from channels for residential areas more often than allowed once every 20 years.
