Through Analysis on roadway roof separation time and law,Adoption malison reinforcing roadway roof separation Exceed the range area,Make the obvious result.
The transit tunnel between station Dajuyuan and station Kexueguan of Shenzen metro passes through fluidal plastic clay soils which should be strengthened in advance before excavation.
Fluorinated polymers were applied to sand stone heritage in order to increase its compressive strength and consolidation as well as to enhance its resistance to desegregation by water.