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Abrasion Characteristics of Shield Cutters in Sandy Cobble Stratum

Yuan Dajun,Hu Xianpeng,Li Xinggao,Sun Li Engineering Research Center of Tunnel and Underground Engineering,Beijing Jiaotong University,Ministry of Education,100044,Beijing,China  
Based on shield tunneling in sandy cobble stratum,the field monitoring and measurement of the abrasion of shield cutters is carried out,and the abrasion coefficients of shield cutters in sandy cobble stratum are computed.Using statistic regression analysis,the relation between shield cutter abrasions and its digging traces could be drawn,and the longest distance shield tunneling without cutter change is estimated,which could provide references for the succeeding similar projects.
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