PONDERING UPON THE GEOLOGICAL ENVIRONMENT ALONG THE SICHUAN-TIBET HIGHWAY AND PLAN OF HAZARDS CONTROLLING

The Sichuan-Tibet Highway was frequently destroyed and obstructed by geological hazards, such as debris flew, landslides, debacles, avalanche, etc, and due to for weak protection. Great changes have taken place after large investment for treating the hazards and recontruction the way, but there is no way to feasible treat some large-scale and complex hazards in the special environment. After investigating on the characteristics of the geological environment and hazards along the highway and summing up experience of hazards controlling and rebuilding for last years, the anthor in this paper gives some suggestions of approach, goal, and principles.