城市防洪典型区域除涝方案分析研究

Abstract

降雨强度、地形及下垫面情况、排水管网分布是城市防洪的关键影响因素。而在同一城市区域内，不同特点下垫面导致不同特征的城市内涝。以大连市中心城区3种典型易涝点区域(平原、丘陵、入海口)为研究对象，进行现状条件下的城市内涝模拟，在模拟结果的基础上，分析不同改造成本下，各个除涝方案在典型区域内的除涝效果，进而确定典型易涝点的较优除涝方案，为实际城市防洪除涝工作提供参考依据。 Rainfall intensity, topography, underlying surface conditions and distribution of drainage pipe network are the key influence factors in urban flood control. However, in the same urban region, the underlying surface with different characteristics could lead to the urban waterlogging with different characteristics. Taking three typical kinds of waterlogged point regions in central area of Dalian, i.e. plain, hill and estuary as research objects, tale quale urban waterlogging is simulated; waterlogged effect of different scenarios for waterlogging control in typical regions under different transformation costs based on the simulated results is analysed, and thus the preferable waterlogging control scenario of typical waterlogged point region is determined, providing a reference for real urban flood and waterlogging control.