9 1 After returning to China, he served as the head of the soil mechanics research group and the technical director of the international cooperation project. After graduation, I have been engaged in the research of soil mechanics, landslide and slope stability. His field of work is closely integrated with his major. Participated in or presided over a number of international cooperation projects and provincial-level scientific and technological research projects, and studied at home and abroad many times in combination with my work. Have a solid theoretical foundation and rich practical experience, and can independently complete major scientific research projects. From 1982 to 1996, he presided over and participated in: "Study on the basic characteristics of cracked soil and its application technical conditions in embankment and cutting slope engineering"; "Study on Landslide and Debris Flow in Loess Area of Gansu Province" (the first international cooperation project); Study on Landslide and Debris Flow Prevention Planning in Lanzhou City; "There are 25 research and application projects on loess landslide mechanism, stability, prediction and prevention countermeasures. In the same period, great progress has been made in the failure mechanism of loess, strength characteristics of sliding zone soil and stability calculation method. The English research report "Stability of Slope Around Lanzhou, Gansu, China" (300,000 words) completed in the European Community has been highly praised by the Comprehensive Research Department of the European Community and the State Science and Technology Commission. After being hired as a researcher, he continued to preside over the implementation and completion of the international cooperation project "Formation Mechanism and Disaster Reduction of Thick Loess Landslide in Western China", and carried out the research on "Prevention and Control Planning of Geological Disasters in Cities and Towns above County Level in Gansu Province", the engineering design of investigation and treatment of key landslides and debris flows, and the hydrological and engineering geological work. While providing scientific and technological services for infrastructure construction, he also conducted in-depth research on technical problems in his work and achieved good economic benefits and scientific research results. He presided over and completed the "Geothermal Survey in Lanzhou Area" and the "Geological Survey of Landslide Engineering in Jinzhong Section of Shanxi Expressway"; Survey and Design for Comprehensive Management of Debris Flow Disaster in Jingtieshan Mining Area of Jiugang Company; Study on Geological Hazards and Prevention Measures of Mahuining Oil Pipeline of China Petroleum and Natural Gas Group Company "Investigation and Design of Hydraulic Protection Engineering in Zheyaogou Crossing Area of Mahuining Line" Investigation and Design of Hydraulic Protection and Geological Hazards Prevention Engineering of Senenglan Gas Pipeline "; There are 52 applied research projects, such as "Flight Inspection of Pipeline Hydraulic Protection and Geological Disaster Control Project in Western China". In addition, 48 application and research reports have been written. After years of theoretical study and engineering practice, my professional level and working ability have been greatly improved. The ability to solve some difficult problems in the project independently and contribute their talents to economic construction has also been affirmed by governments at all levels. He was hired as a member of the professional committee of geological disaster prevention and control engineering of Gansu Construction Science and Technology Expert Committee, the professional committee of ground engineering of Gansu Rock Mechanics Society, the academic committee of Gansu Academy of Sciences and the technical post evaluation committee. 1999 was granted special government allowance by the state Council, registered as a geotechnical engineer in 2002, and was selected as the first-class discipline leader of provincial 333.