education background 	  	- 		1993  phd. in structural engineering, tongji university, china
 	- 		 1990  m.s. in geotechnical engineering, xi'an university of science and technology, china
 	- 		 1987  b.s. in constructural engineering, taiyuan university of technology, china
  	  	research interests 	  	- 		geotechnical and underground engineering monitoring and control engineering countermeasure research
 	- 		based on the risk of tunnel and retaining and protection of foundation pit design
 	- 		tunnel and underground engineering dynamic information construction
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