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t h e ac t iv it y t ren d w as p redict ed. T h e inf lu en c ed r ang e of g rou n d fis su res on t h e s u bw ay w as co n— f irm ed b y q uan tit at iv e cal cu latio n , m eanw h ile , th e r is k of in t ersec t sit u at ion w it h t h e lin e w as g rad ed o n the bas is o f analyz ing th e ris k c harac teris tic s to th e s ub w ay c om pr eh ens ively. T h e r e— s u its sh o...