Method for determining drainage flow of drainage pump station
A technology for determining methods and drainage volumes, applied in design optimization/simulation, special data processing applications, etc., can solve problems such as discounted drainage effects of pumping stations, urban waterlogging accidents, and unaccounted for water flow
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Embodiment 1
[0041] One embodiment of the present invention provides a method for determining the drainage flow rate of a drainage pumping station, comprising the following steps:
[0042] Step 1. Confirm the flow process boundary of the upstream of the flooded area during the flood period and the water level process boundary of the downstream of the flooded area during the flood period;
[0043] Step 2. Determine the water level value of the inland river in the flooded area before the rainfall, that is, the starting water level value; calculate the corresponding channel flow under different inland river water levels in the flooded area;
[0044] Step 3: Select a number of drainage flow values, and calculate the different flow rates according to the water level values of the inland river, the water level values of the outer river, and the corresponding channel flow rates under different inland river water levels, combined with the gate discharge flow, pump discharge flow, and net rain f...
Embodiment 2
[0070] 1. Determine the drainage area of 0.83km 2 , the length of the river is 0.55km, according to the flood control and drainage plan, the drainage standard of this area is 20 years.
[0071] Working conditions: The design flood in the inner river meets the once-in-200-year flood tide level in the outer river.
[0072] 2. In order to ensure the water landscape of the river full of water and clear water, and at the same time ensure the drainage safety of the river basin, the minimum water level of the landscape is set to be 0.8m. Determine the water level value of the inland river in the flooded area before the rainfall, that is, the starting water level value, which is the aforementioned landscape low water level of 0.8m;
[0073] 3. Use the formula for the flow capacity of the drainage channel to calculate the corresponding flow rate of the channel under different inland river water levels in the flooded area:
[0074] Table 1 Corresponding river drainage capacity of di...
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