西南地区城市因山地环境的特殊性,面临城市雨洪灾害频发、多发和危害严重等特点,其雨洪灾害防治方法也不同于其它地域城市.通过对典型山地城市重庆近10年水文数据的观察,将雨洪灾害的形成、发展与城市水文过程特征进行关联分析.借助水循环模拟分析的理论基础,结合山地流域多元化、城镇空间组团化、社区空间多维化等特点,以多尺度空间下的水文模拟过程为依托,建构应对山地城镇雨洪灾害防治框架体系:(1)流域尺度生态安全格局体系建构;(2)城镇尺度雨洪防灾基础设施布局及空间优化;(3)社区尺度雨洪设施的低冲击设计.研究探索山地城镇雨洪灾害发生的规律特征和科学价值,可为全球气候变暖下的山地城市雨洪灾害防治提供参考.%The particularity of geo-environment in the mountain cities of Southwest China,which are suffering fre-quent flooding and serious damages,makes great difference to the pattern of engineered prevention and control of ur-ban flood from those of non-mountain cities.By examining hydrological observations for recent 10 years collected in a typical mountain city,Chongqing,this research tried to make a causal connection for the formation and develop-ment of urban flood to the features of urban hydrological processes by integrated analysis.In consideration of the properties of mountain cities,such as diversity of mountain watersheds,grouping of urban spaces and multi-dimen-sionality of local communities,etc.,it commenced with the theory of water circulation to conduct hydrological process modeling on multi-scale basis,and accomplish a construction of framework of integrated control of flooding in mountain city:(1)Construction of ecological security system on a watershed scale;(2)Infrastructure layout and space optimization of flood control on a urban scale;(3)Design of facilities with against flooding damages on a com-munity scale.The investigation on the governing mechanism of urban flood and resultant scientific merits would pro-vide reference to rainfall flood control in mountain cities under the circumstance of global warming trend.
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