This specification is applicable to the planning of Tianjin sponge city, the design, construction, acceptance and maintenance management of all kinds of new construction, reconstruction and expansion projects.
The construction of Tianjin sponge city should adhere to the principles of planning guidance, ecological priority, safety first, local conditions and overall consideration.
Tianjin master plan, relevant special planning, detailed planning and planning and design of new construction, renovation and expansion projects should implement the concept of sponge city construction, define the construction index of sponge city, and the technical measures of sponge city should be planned, designed, constructed and put into use simultaneously with the main project.
The planning, design, construction and maintenance of sponge city should actively adopt new technologies, new methods, new materials and new equipment on the basis of constantly summarizing the latest scientific research achievements and practical experience in production.
The planning, design, construction and maintenance of sponge city should not only meet the requirements of this specification, but also meet the provisions of the current relevant standards and specifications of the state and Tianjin.
Sponge City Sponge City refers to the urban development mode of natural accumulation, natural infiltration and natural purification by strengthening the management of urban planning and construction, giving full play to the role of buildings, roads, green spaces, water systems and other ecosystems in absorbing, storing and releasing rainwater, effectively controlling rainwater runoff. Sponge city emphasizes the infiltration, detention, storage, purification and reuse of rainwater at the source, and reduces the peak flow and total discharge of rainwater.
LID) Low-impact development (LID) means that in the process of urban development and construction, the hydrological characteristics before and after urban development and construction are kept unchanged as much as possible through ecological measures, so as to effectively alleviate the increase of total runoff, flood peak runoff and runoff pollution caused by the increase of impervious area and reduce the adverse impact on the environment.
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