Research on the Geotechnical Engineering Investigation and Foundation Treatment Methods of Large Thickness Collapsible Loess

Geotechnical engineering plays a valuable and fundamental role in the process of engineering construction in China, and during the process of geotechnical engineering construction, engineering investigation and foundation treatment have significant influence on the whole construction quality of the geotechnical engineering. The widespread distribution and overall features of collapsible loess bring more difficulty for engineering investigation and foundation treatment. Any failure of accurate investigation and effective foundation treatment may lead to the collapse during the engineering construction. There is a large area of collapsible loess in the northwest of China, especially in Lanzhou, and such extensive distribution of collapsible loess makes it quite difficult during the geotechnical engineering construction. How to conduct effective geotechnical engineering investigation and foundation treatment for collapsible loess is the priority of researches on geotechnical engineering construction in Lanzhou for the moment. During the process of foundation treatment of collapsible loess, the overall characteristics of loess should be taken into consideration, and then it shall be analyzed and demonstrated from perspectives of economy, rationality and feasibility. This paper takes Lanzhou as the research object and carries out the research on the geotechnical engineering investigation and foundation treatment methods in this area during the research process. The research outcomes can serve as empirical support and theoretical reference for geotechnical engineering investigation and foundation treatment of large thickness collapsible loess, and further improve the construction quality and economic benefits of geotechnical engineering.