Study On The Landscape Design Of The Urban Coal Subsidence Water Area Based On "LID"

In coal mining subsidence area of the city is located in the city built type is close to city,and environmental pollution due to coal mining subsidence,the hydrologic cycle,the problem such as urban landscape zone divided all the way to influence the city's ecological development.To the fresh water resources in China,the urban construction land resources nervous,coal mining subsidence area caused by the larger environment,the need for a reasonable,effective and ecological design methods of urban type coal mining subsidence waters the huge potential of urban ecological resources for sustainable development and utilization.Through a lot of field research and literature reading,this paper first summarizes the existing problems in the subsidence area of urban coal mining and its source of water pollution.Then according to the need to address the function orientation of coal mining subsidence water pollution are analyzed in detail and the surrounding land use the relationship between the activity type,through the comparison on the advantages and disadvantages of the traditional subsidence water landscape restoration method of analysis will be low impact development(LID)theory is introduced into urban landscape reconstruction in coal mining subsidence waters.The low-impact development(LID)is a kind of design concept which is based on the natural hydrological conditions of the simulated site and adopts the landscape design method to manage the rainwater runoff in the field.This research through the rainwater management,cleaning principle and urban land for coal mining subsidence waters surrounding activity superposition analysis of specific pollutants,city type coal mining subsidence waters can be divided into five types.According to the different function orientation of each type and the existing natural features,a new feature is proposed,which is based on the low-impact landscape design method of rainwater management.Type to fundamentally solve the urban water pollution in coal mining subsidence,broken landscape environment,and waste of water resources,destruction of urban ecological landscape pattern of the problem,hope for urban ecological landscape restoration of coal mining subsidence waters provides referential research train of thought.