Analysis of plastic bush pile processing soft soil foundation;

A kind of ringed core pulling mechanism of injection die of plastic casing coupling is introduced.

To introduce the technical requirements on plastic casing of non coherent prestressed reinforcing bar,analyze with the emphasis on the reason of the casing oil leakage,discuss the measures should be adopte

This paper from both theoretical analysis and practical experience,successfully to blast in weak strata consolidation、freezing layer and soft rock,the use of drilling water hole solved the difficulty in drilling hole,the use of PVC plastic pipe solved the difficulty of charge,the use of adjust detona.

Application of a new type plastic sleeve pipe in the large formwork construction;