城市深地空间（地下 50 m以深）是缓解城市土地资源紧缺、提升城市韧性的战略新高地，更是践行 “向地球深部进军” 国家战略、培育深地新质生产力的核心载体。针对当前深地开发的技术瓶颈与社会阻力，系统剖析核心挑战，构建应用场景图谱，完善关键技术体系，明确其规模化、安全化、可持续开发路径。技术层面挑战包括深部“三高”地质环境非线性突变、高密度区微扰动施工、深地人居健康保障缺失及运维成本高昂等；社会层面涵盖公众心理抵触、权属界定模糊、绿色低碳技术短板等。在此基础上，展望高效流通、绿色能源枢纽、安全韧性屏障及前沿科创四大核心应用场景，构建涵盖三维权属协同规划、“透明地球” 精准勘察等全链条关键技术体系，形成 “挑战-场景-技术-保障” 的完整研究框架，创新性构建多元化应用场景谱系，将人因工程融入深地健康环境营造，建立三维权属协同规划模式，可为我国城市深地空间开发提供理论支撑与实践路径，助力城市向深部化、集约化、智慧化转型升级。
Urban deep underground space (at depths of over 50 m) is a strategic highland for alleviating the shortage of urban land resources and enhancing urban resilience, as well as the core carrier for implementing the national strategy of “marching towards the deep earth” and fostering new quality productive forces in the deep earth. In response to the current technical bottlenecks and social resistance in deep earth development, the core challenges are systematically analyzed, an application scenario framework is constructed, key technology system is improved, and the path for its large-scale, safe, and sustainable development is clarified. Technical challenges include the nonlinear mutation of the deep “three-high” (high ground stress, high geothermal temperature, and high hydraulic pressure) geological environment, micro-disturbance construction in high-density areas, lack of health protection in deep underground human settlements, and high operation and maintenance costs; social challenges include public psychological resistance, ambiguous ownership definition, and shortcomings in green and low-carbon technologies. On this basis, four core application scenarios are prospected: efficient circulation, green energy hub, safety and resilience barrier, and cuttingedge scientific and technological innovation. A full-chain key technology system including three-dimensional (3D) ownership collaborative planning and “Transparent Earth” precise exploration is constructed. A complete research framework of “Challenge-Scenario-Technology-Guarantee” is established, a diversified application scenario spectrum is innovatively constructed, human factors engineering are integrated into the construction of healthy deep underground environments for the first time, and a 3D ownership collaborative planning model, which can provide theoretical support and practical paths for the development of urban deep underground space in China and help cities transform towards deepening, intensification and intelligence, is established.
