【摘要】 高密度城市开发强度大、人口密集，建设用地与山地缺少缓冲带，山洪对生命财产的威胁日趋增大。按照韧性城市和海绵城市的建设要求，采用“渗、截、拦、蓄、用、排”的总体思路，强化山洪源头减量和蓄滞，保障山洪穿城下泄安全，构建完善的“截洪控源-过程蓄滞-下泄安全”山洪截滞系统，并与防洪排涝系统充分衔接与协调，补齐城市防洪排涝体系源头关键一环。更多还原

【Abstract】 High-density construction cities are intensely developed and densely populated, the construction land and mountains lack buffer zones, thus flash floods pose an increasing threat to life and property. According to the construction requirements of resilient cities and sponge cities, the general idea of “infiltration, interception, blockage, storage, use and drainage” is adopted to strengthen the reduction and storage of flash flood sources, ensure the safety of flash floods passing through the city, and build a complete flash flood interception and retardation system of “flood interception and source control-process stagnation-discharge safety”, fully connect and coordinate with the flood prevention and drainage system,and complete the key link of the source of the urban flood prevention and drainage system.更多还原