A method for determining the pre-selected site of a rainwater storage tank

Abstract

The invention discloses a method for determining a pre-selected site of a rainwater storage pond and belongs to the technical field of municipal drainage. The method for determining the pre-selected site of the rainwater storage pond mainly comprises the steps that based on an SWMM model and the urban water logging prevention and treatment standard, the comprehensive evaluation indexes, namely the hazard indexes of accumulated water, of all nodes are obtained through conversion and calculation with the rainwater system nodes as evaluation objects, the position of the pre-selected rainwater storage pond as a target, the depth and the range and the time of the accumulated water around each node as evaluation factors and with the importance and the sensibility of the nodes and weighting considered, the ranking is conducted according to the hazard indexes of the accumulated water, a final result is obtained, and the node with the larger hazard index of the accumulated water is determined to be the pre-selected site of the rainwater storage pond. According to the method for determining the pre-selected site of the rainwater storage pond, more influence factors are considered, the obtained pre-selected site technical scheme is more reasonable, a quite good initial condition (scheme) is provided for later-stage layout optimization of the storage pond, and the working efficiency in the analysis and comparison process, namely the scheme optimization process, is improved.

Description

technical field [0001] The invention belongs to the technical field of urban drainage, and more specifically relates to a method for determining a pre-selected location of a rainwater storage tank. Background technique [0002] With the continuous acceleration of urbanization and the impact of climate change, the problem of urban rainstorm and waterlogging has become increasingly prominent. As one of the effective measures to alleviate waterlogging and internal waterlogging in rainwater systems, storage tanks have been increasingly used. The determination of the location of the storage tank in the stormwater system usually includes three links: [1] pre-selection of the site (potential location selection) - [2] analysis and comparison (plan optimization) - [3] final location determination. What the present invention pays attention to is [1] pre-selection link. The rainwater system is a huge nonlinear system. The location selection of the storage tank in the system is affect...

AI Technical Summary

Problems solved by technology

There is no pre-site selection method in China. Although there is a method for determining the final location of the storage tank, it uses two-dimensional commercial software, and at the same time, all water accumulation points (meaning that the water depth is greater than 15cm) are listed as the location of the storage tank. The final location, its design is not reasonable, and the overall project cost is high

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