RESEARCH ON VERTICAL PLANNING OF SPONGE CITY OF KEY AREAS IN WANQINGSHA POLDER IN NANSHA NEW AREA

In this paper, focused on the systematic planning of sponge city construction, the vertical elevation planning system was studied. Based on the traditional analysis of flood control and drainage factors, the analysis of underground space, sponge space and facility layout was added, and the traditional drainage mode of "quick discharge, end management" was changed through vertical planning, to provide vertical support for the establishment of multi-level control mode including source emission reduction, process control and system management. In order to determine the vertical elevation of the city scientifically, on the basis of the traditional vertical planning method, the determining method of the vertical reference elevation was optimized. According to the different functional requirements of the site and the road, the controlling method of the vertical elevation of the site and the road through classification was proposed to construct the vertical spatial model of sponge space and facilities, which could provide practical ideas for the compilation of vertical urban planning in the future, and reference for the vertical coordination of space and facilities in sponge city construction.