Research on special sinking technology for ultra-deep soil layer
JI Huaihai
ZHAI Jinghui
Abstract：In order to exploit the solid mineral resources under the ultra-deep soil layer,the feasibility analysis of special sinking methods such as freezing method,drilling method and concrete curtain method was carried out based on the construction of shaft in the deep surface soil layer of 2 000 m as the engineering background,by summarizing the achievements of shaft construction in the deep soil layer and referring to the deep soil shaft construction experience and theoretical research.The research shows that:under the background of this project,using single freezing method or single drilling method as well construction technology is not mature and difficult to realize;It is feasible to adopt the frozen-curtain drilling method.Because the deep shaft construction faces the problems of"high ground stress,high ground temperature and high water pressure",in order to ensure the safety of the pro-ject,the frozen-curtain drilling method is proposed,which provides a directional reference for the sub-sequent selection of drilling methods in ultra-deep soil layer.
Keywords：ultra-deep soil layerspecial sinkingshaft liningfrozen-curtain drilling methodfeasibility analysis
Publication Date：2024-08-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 70-74 )