The Underground Space Construction and Operation and Maintenance Technology Innovation Forum aims to promote the technological progress of planning, design, construction, monitoring, operation and maintenance, safety protection and other aspects in the development and utilization of urban underground space, and promote the extensive exchange, display and application of new concepts, new technologies, new equipment, new processes, and new materials in the development and operation and maintenance of urban underground space. The major disaster prevention of urban underground space is discussed in depth from the aspects of overall disaster prevention and prevention, national defense and security, moderate advance of disaster prevention standards, combination of underground space restoration and reconstruction with surface engineering planning and design, and strengthening information and intelligent construction of major disaster early warning and prevention. It is suggested to explore the system mechanism, planning plan, technical standard, underground perception detection, disaster scenario and resilient underground space of major disaster prevention in urban underground space.

(1) Geotechnical and reconnaissance technology
1. Geotechnical Engineering construction technology and material equipment development Forum
2. Forum on the application of geotechnical engineering test technology in geotechnical investigation

(2) foundation pit construction technology
1. Research forum on key points of deep foundation construction technology
2. Research on deep foundation pit support monitoring and construction technology

(3) trenchless repair technology
1. Application Research Forum of trenchless restoration technology in municipal pipe network transformation
2. Trenchless repair and renewal technology Forum for urban underground pipelines

(4) Urban lifeline
1. Construction technology research and application forum of urban underground integrated pipe gallery
2. Drainage network intelligent operation and repair technology development Forum

(5) Underground space renewal and operation and maintenance
1. Discussion and reflection Forum on digital path of urban underground space elements
2. Key technologies and application Forum of urban underground spatial information Integrated management and service platform

(6) Tunnel engineering and rail transit technology
1. Urban rail Transit open-cut tunnel excavation technology Forum
2. Technical Forum on design of long rail transit tunnel under complex geological conditions