Calculation method for calculating rechecked sponge index by using micro-partition/volumetric method

Abstract

The invention provides a calculation method for calculating a recheck sponge index by using a micro-partition/volumetric method. According to land parcel topography, buildings, current situation pipenetworks and related facilities, drainage subareas are subdivided into micro subareas, the area of the underlying surface and the adjustment water storage amount of the LID facilities are subjected todetailed statistics by dividing the micro subareas, and the matching condition of the water storage volume of the LID facilities and the actual surface runoff afflux amount can be accurately judged;a large deviation value between the designed water storage capacity and the actual water storage capacity is avoided; and measures can be taken for the discovered problems, and the design is guided tobe optimized, so that the effect of each LID monomer is brought into full play, low-efficiency or even inefficient LID monomers are avoided, or the requirement that the actual water storage capacitycannot reach the set surface runoff control target due to the fact that the actual water storage capacity cannot reach the set surface runoff control target is avoided.

Description

technical field [0001] The present invention relates to the field of sponge city design, in particular to a calculation method for calculating re-checked sponge index by using micro-section / volume method. Background technique [0002] At present, the design and calculation of sponge city indicators, especially the calculation of sponge city indicators for plots such as residential areas and public buildings, generally use the partition / volume method for calculation. The main calculation methods and steps are as follows: [0003] 1) According to factors such as the height of the terrain, the current rainwater pipe network, etc., the main and main roads of the drainage pipe network are used as the boundary to divide the drainage area. Combined with the current topography and landforms in the drainage area, the layout of the sponge facilities for Low Impact Development (LID) is carried out; [0004] 2) To calculate the comprehensive runoff coefficient of each catchment area an...

AI Technical Summary

Problems solved by technology

[0017] 1) This method can only roughly divide the drainage partitions, and the surface runoff with LID partitions is calculated as if it is all imported into the LID, while the runoff that is not set is calculated as not being imported into the LID

[0018] 2) It is impossible to judge whether the surface runoff in the drainage area can be completely imported into the LID facilities, or into the downstream LID, and it is also impossible to judge whether the water storage capacity of each LID facility matches the actual surface runoff inflow

[0019] 3) Rough calculation indicators lead to a large deviation between the designed water storage capacity and the actual water storage capacity, and the volume of the set storage tank is also prone to deviations, which cannot achieve the expected peak elimination effect; problems cannot be found during the design calculation process , unable to take targeted measures to solve the problem

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