管道渗水诱发黄土暗穴的形成过程及其可视化研究

In the process of the western development, more and more construction work is building in the loess area,but it has taken frequent geotechnical engineering problems which were caused by formation and development of hidden holes in loess.Hidden holes in loess is an issue that should not be ignored in engineering construction. The aim of this paper is to attempt to model the natural process of formation of hidden holes in loess by putting intact loess into plexiglass Container, and meanwhile putting perforated pipe into loess. It can be visualization of formation of hidden holes to describe its macroscopic by observation of section plane and vedio tape. A comparative analysis of SEM photos was made to show the microstructure of different developmental stages,and the formation reason of structure of hidden holes was discussed preliminarily.The paper provides theory basis for the governance of hidden holes in loess.