Research On Planning System Of Urban Underground Space

Urban underground space, as a new land resources, play a considerable role inraising land utilization rate, optimizing the city functional layout, easing city traffic,expanding infrastructure capacity, increasing the greenbelt of the city, maintaining thehistorical culture landscape, reducing environmental pollution, and improving the city’secological environment. There has no study on the underground space planning systemand content from the different spatial level, although relevant laws and regulations hadbeen introduced in many provinces including Zhejiang.Through summarizing the different levels of Zhejiang province undergroundspace planning, including city, Urban area, subregion, and key area, firstly, the presentstudy put forward that urban underground space planning system should be dividedinto three dimensions (Vice provincial city level, prefecture-level city level, andcounty-level city level) and each spatial dimension should have distinct Planningsystem. Secondly, through combining with case analysis, we propose the main task,content, and results of overall planning stage, special planning and detailed planningstage from the time dimension. Thirdly, through analyzing the management regulations,policies and institutional mechanisms of other provinces, the recommendations forZhejiang province has been put forward.The present study might help relevant departments to organization theirunderground space planning, and make support to existed guidelines. At the same time,we suggest that underground space planning standards or planning technical specification in national level should be introduced. For the scientific, rationality andmaneuverability, its content should fully consider the reality differences in nationalregion. The limitation of our study is: it is a preliminary study from the planning pointof view, further study are required to determine its subsequent approval, ownershipdefinition, the connectivity problem and management.