The Restoration And Construction Of Rain Corridor System During Urban Renewal In Southern Hilly City's

In recent years,many cities in China hit consecutive torrential rains,about 2 / 3 of the land area is increasingly subjected to influence of different type and degree of damage of flood disaster;in this at the same time,the majority of urban development and generally face shortage of water resources,the heat island effect,underground funnel expanded problems,frequent flooding and water resources shortage coexist conflicts.Old natural hydrological process of destruction,traditionally "based on discharge of stormwater management concept and system,forcing the old city water resources problem is more severe,deterioration of the ecological environment,frequent waterlogging,water shortage,ground subsidence,water pollution and so on a series of problems seriously threaten the healthy development of the old city.In this study,combined with both at home and abroad a lot of rain protection and use of ideas and practice,update to the hills of the old city as an opportunity,to Hilly Urban small drainage basin partition as the breakthrough point,systematically proposed restoration and construction of multi-level and multi-scale Hilly Urban Rainwater corridor theory frame and method system.In the first chapter,the paper introduces the origin of the paper,the purpose,significance,research methods and framework,and expounds the related concepts and theories..Then in the second chapter comprehensive analysis of the effect of urban construction on the natural hydrological processes and the drawbacks of the existing urban drainage system in China,by reviewing the domestic and foreign about water conservation and utilization of research and practice,provide guidance for construction of urban rainwater of corridor system.By functional features in the third chapter summarized the old city to rain corridor,mining multiple rain corridor ecological,social and economic functions,define the value orientation of urban rainwater corridor and with the relevant special planning relationship,as the basis for follow-up study.In the fourth chapter and the two chapter,fifth chapters are focused on the restoration of the old city rainwater corridor in Southern Hills,and the construction of the rainwater corridor system in the Hilly Old City.According to the characteristics of hilly terrain,small watershed drainage division of Old City District,the extraction of river network system.And then through the comprehensive analysis of the old city data,mining and combing out all kinds of potential sites,as the carrier of the rain corridor,thus determined can restore the old city space path of the rain corridor.In rain corridor system construction research,respectively on rainwater river corridor system,road rainwater corridor system,municipal corridor rain corridor system and rain corridor "patch" building,of all kinds of rain corridor system optimization on the basis,so as to realize construction of Hilly Urban Rainwater corridor system.