ENGINEERING GEOLOGICAL CHARACTERISTICS AND EVALUATIONS OF PERMAFROST IN DAXING①ANMOUNTAINS

Soil has very high compressive strength and elast ic eng ineering geo log ical character in freeze state. But w ith the e levation of the ground temperature, the tw o characters can w eaken quick ly and performance slow ly change. The change can lead to the intensity reduc ing and destroying o f the bu ild ing base. Perm afrost in D aX ing ganM ountains possess c ircumpo lar lat itude and low a lt itude characterist ics. Th is paper bu ilds on that base founda t ion analyses permafrost distribution characteristic and eng ineering geo log ical characteristics evaluat ion o f permafrost in D a h ingganmountains. It exam ines the cases of destroy ing building base because of frost heav ing and thaw sett le ment. The paper puts forw ard the idea andmake use o f therm al pipe to reduce so il temperature for ensuring stab ili zation in perm afrost and reduc ing destabilizing due to w ater destroy ing bu ilding base.