Study on the Compilation Methods and Regulation Route of Implementation-Oriented Underground Space Detailed Planning

With the rapid development of urban underground space in China, the implementation of detailed planning for underground space has become an important issue in planning management. However, due to unclear responsibilities, insufficient technical support, and weak regulation enforcement, it is difficult for the planning to be implemented smoothly. Therefore, a "clarifying responsibilities, strengthening technology, refining regulation" framework and approaches are proposed to improve the implementability of underground space detailed planning. Regarding clarifying responsibilities, subjects should be identified based on project attributes and coordination mechanisms should be established. Regarding strengthening technology, emphasis should be placed on preliminary technical demonstration and economic benefit analysis. Regarding refining regulation, reasonable arrangement of implementation timeline, differentiation between rigid and flexible elements, and strengthening constraints in land supply should be adopted. Finally, the applicability of this method is illustrated by a case study of the Qianhai Shenzhen-Hong Kong Modern Service Industry Cooperation Zone. The proposed approaches to improve implementability of underground space planning can provide scientific basis for underground space planning in China and help optimize planning content and improve enforceability and applicability.