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伴随着城市化进程的不断加快,西安城市建设区的持续扩张,道路硬化程度逐年增加,城市开发强度越来越大,“热岛”“雨岛”效应逐年增强,原有的洪涝蓄滞区被挤占,由于排水设施的建设滞后于城市建设的发展,从而产生一系列城市水安全方面的问题。如城区的不透水地面,致使雨水无法下渗,加上原有的城市地下排水管道老化,排水系统不健全,缩短了市区洪峰形成时间,洪水总量和流速增大,市区道路成为主要的洪水路径,地势低洼的中北部城区更易形成内涝,导致洪涝灾害的发生。因此本文就对透水路面在海绵城市建设中的应用进行分析。
With the accelerating process of urbanization, the continuous expansion of urban construction areas in Xi’an, the degree of road hardening increased year by year, the strength of urban development is increasing, the effect of “heat island” and “rain island” increased year by year, and the original flood storage area was Due to the construction of drainage facilities lagging behind the development of urban construction, a series of problems in urban water safety are created. Such as the urban impervious surface, resulting in the infiltration of rain can not, coupled with the existing urban underground drainage pipe aging, drainage system is not perfect, shortening the urban flood peak formation time, the total flood and flow rate increases, the urban roads become the main Flood paths and low-lying central and northern urban areas are more prone to waterlogging, leading to floods and floods. Therefore, this paper analyzes the application of permeable pavement in sponge city construction.