Research Article

Study on Control of Cumulative Risk for Submarine Tunnel Shield Construction

Table 7

The calculation formulas of Fxy.

FxytptltntrFxy

FSSFS (tp)FS (tl)FS (tn)FS (tr)FSS = βpFS (tp) ∨βlFS (tl) ∨βnFS (tn) ∨βrFS (tr)
FSPFP (tp)FSP = βpFP (tp)
FSLFL (tl)FSL = βlFL (tl)
FSNFN (tn)FSN = βnFN (tn)
FSRFR (tr)FSR = βrFR (tr)
FPPFP (tp)FPP = βpFP (tp)
FPLFL (tp)FL (tl)FPL = βpFL (tp) +βlFL (tl)
FPNFN (tp)FN (tp)FN (tp)FPN = βpFN (tp) + βlFN (tp) + βnFN (tp)
FPRFR (tp)FR (tl)FR (tn)FR (tr)FPR = βpFR (tp) + βlFR (tl) + βnFR (tn) + βrFR (tr)
FLLFL (tl)FLL = βlFL (tl)
FLNFN (tl)FN (tn)FLN = βlFN (tl) + βnFN (tn)
FLRFR (tl)FR (tn)FR (tr)FLR = βlFR (tl) + βnFR (tn) + βrFR (tr)
FNNFN (tn)FNN = βnFN (tn)
FNRFR (tn)FR (tr)FNR = βnFR (tn) + βrFR (tr)