Comprehensive restraint works of landslide hazard at Shanshenmiao tunnel entrance on Xichang-Panzhihua Expressway in Sichuan Province;

Research on Suitable Technique for Recovering Ecosystem of Ping-Xi Expressway;

Taking constructing Hurongxi Expressway of Hubei Province as an example,the effect of different mixture sowing style,different plant species and different plant cover degree on soil erosion had been studied.

In order to made a study of law of development of side slope gully erosion of highway spoil ground,upgrowth characteristic and law of development of gully erosion and realation between intercolparis erosion and gully erosion had been studied in the spoil ground of constructing Hurongxi expressway of Hubei province.