1) Sydney, August 1-6, 1983: ''Energy efficient buildings with earth shelter protection'';

2) Minneapolis, June 16-19, 1986: ''Advances in geotectural designSecond International earth sheltered buildings Conference'';

3) Shanghai, 1988: ''New developments of underground space use''. Tongji University;

4) Tokyo, December 3-5, 1991: ''Urban Underground Utilization '914th International Conference on underground space and earth sheltered buildings''. Underground Space Center of Japan;

5) Delft, August 3-5, 1992: ''International Conference on Underground Space and Earth Sheltered Structures''. Delft University;

6) Paris, September 26-29, 1995: ''Underground Space and Urban Planning''. Laboratoire Théorie des Mutations Urbaines, Institut Fran ais d'Urbanisme;

7) Montreal, Sept. 29-Oct. 3, 1997: ''Underground Space: Indoor Cities of Tomorrow". Urban Planning Department of the City of Montreal;

8) Xi'An, September 27-30, 1999: ''Agenda and Prospect of the Underground Space for the Turn of the Century''. College of Architecture, Xi'An University of Architecture and Technology.

9) Torino, November 14-16, 2002: "Urban Underground Space: a Resource for Cities". Politecnico di Torino, and the Associazione Georisorse e Ambiente

10) Moscow, January 24-28, 2005: "Underground Space: Economy and Environment". Moscow State University of Civil Engineering

11) Athens, September 10-13, 2007: "Underground Space: Expanding the Frontiers", Laboratory of Mining and Environmental Technology, N.T.U.A

12) Shenzhen, November 18-19, 2009: "Using the Underground of Cities: for a Harmonious and Sustainable Urban Environment", Shenzhen Municipal Government &  Underground Space Sub-society of CSRME

13 ) SingaporeNovember 7-9, 2012: “Underground Space Development – Opportunities and Challenges”, Society for Rock Mechanics & Engineering Geology (Singapore) and the Protective Technology Research Centre of Nanyang Technological University

14) Seoul, September 24-26, 2014: Underground Space: Planning, Administration and Design Challenges”, Research Center for Urban Underground Space (RCUUS) and Korea Institute of Building Construction 

15) Saint Petersburg, September 12-15, 2016: "Underground Urbanisation as a prerequiste for Sustainable Development", Association of Underground Builders 
 
16) Hong Kong, November 4-8, 2018: " Integrated Underground Solutions for Compact Metropolitan Cities", Hong Kong Institution of Engineers and Hong Kong Geotechnical Engineering Society