DU Jia-hui,XUE Xiang-shan,ZOU Rong,et al.Case Design of Sponge City with the Characteristics of Plateau Slope[J].China Water & Wastewater,2020,36(16 16):30-34.
Case Design of Sponge City with the Characteristics of Plateau Slope
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
16 16
Page:
30-34
Column:
Date of publication:
2020-08-17
- Abstract:
- Taking the north area of the Dahe River in Yuxi City as an example, the temporal and spatial characteristics of runoff formation, and the influence of slope on the removal of pollutants in the stepped topography were analyzed, which were based on the natural background conditions of the plateau stepped city. Considering the future development of Yuxi City, combining the overall concept and six-character policy of low impact development construction, the three-dimensional sponge city design idea of “grading depot, step purification, nearby recycle, system management” was proposed. Meanwhile, the guiding strategy suitable for the application of sponge measures at all levels was integrated, for purpose of exploring suitable methods for the sponge construction in the plateau stepped city. This study also found that the design strategy of the first-level plain area was suggested as “storage, purification, and drainage” in order to strengthen runoff storage and reduce flood risk. The design strategy of the second-level area was suggested as “stagnation, storage, and purification”. Combined with the characteristics of low permeability of soil, the sponge technology method integrated with “infiltration” strategy was applied to control runoff and non-point source pollution. The design of the third-level mountain area was mainly based on “infiltration, stagnation and purification” to purify the source runoff.
Last Update:
2020-08-17