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Practice and research on risk assessment of geological hazard of land for road construction──A case study on Xiangshi express way

CHEN Jun (Hydrogeological and Engineering Geological Team of Huben Province,Jingzhou\ 434100,China)  
Taking Xingshi express was(Xiangfan to Wudang mountain,Hubei Province)as an example,the paper advances the determination criteria of geological hazard assessment for road construction.Following the comprehensive discussion,a definition on the risk of geological hazard is proposed.Combined with the engineering project,the present and forecasted assessment and risk classification for express\|way geological hazards are presented.Meantime,the quantitative index of invest ratio for hazard prevention engineering in road construction is put forward,finally the countermeasures for existing main problems are suggested.
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