Site research on mechanism features of mine freezing shaft wall in thick clay stratum

Through this project, the relationship between the consolidation of prefabrication drains and the thickness of clay is concluded:in some region, the more thickness of clay, the more effect we can found, on the contrary , the effect is not obvious in the thin clay .

By analyzing the construction technology of Dingji air shaft in thick clay strata, this paper summarizes the successful technical measures of rapid and safe freezing construction in thick clay strata.

The Jixi main shaft was constructed through thick clay strata which are easy to swell.

Numerical calculation and experimental study of drilling shaft bottom in special thick alluvium;

Aiming at the status,that there is not theory reference for project determination of shaft line freezing in deep alluvium,in the paper a method which combines the finite element numerical simulation with multi-target gray situation decision-making was brought forward,in order to optimize project determination of deep shaft line freezing.