Refined Design Cases of Sponge Reconstruction Project in Old Residential Communities Based on Systematization
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
8 8
Page:
69-76
Column:
Date of publication:
2020-04-17
- Abstract:
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During the sponge city construction in the Hupanyaju and Shigou communities, the characteristics of concentrated short-duration rainfall, the hilly terrain with ponding easily and the low groundwater level with good soil permeability were analyzed. The capture ratio of annual rainfall, pollutant load reduction, discharge capacity of pipeline network, control of mountain torrents, rainwater utilization and the prevention and control of water logging were calculated and designed. The concept of “micro-partitioning” was introduced, and the water storage capacity and actual water storage capacity of each LID and micro-partition were checked with refinement. The adjacent partitions were connected in series to avoid the low-efficiency or inefficiency of sponge facilities. Some aspects including the water security, water environment improvement, water ecology restoration, water resources conservation and water landscape upgrading were combined into a whole system. The measures of pervious concrete pavement, rainwater storage tank, dry stream and gravel grooves were strengthened. And then, plants that were drought-resistant, moisture-resistant, shade-resistant, pollution-resistant, scientific, ecological and ornamental were added. Based on the refined design, this project got a good performance.
Last Update:
2020-04-17