Research Article

Study on Control of Cumulative Risk for Submarine Tunnel Shield Construction

Table 10

The control measures and effects.

MiControl measuresEffects

M1Single-hole double-track tunnel design plan(P F1.3, F1.5, F2.1, F2.2, F2.4, F3.5, F4.2, F4.3); (L F4.6)
M2Geological treatment before excavation(P F2.3, F2.4)
M3Air-cushion pressure-regulating mud-water balance shield machine equipped with large-flow mud-water scouring cycle and secondary crusher(L F2.4)
M4Replacement of the disc cutters under atmospheric conditions, telescopic spherical hinge main drive(L F2.4, F4.6)
M5Advance drill, advance grouting system, and advanced geophysical equipment(L F2.4, F4.2, F4.7)
M6Improved wear resistance of disc cutters(L F2.4, F4.6)
M7Construction of structural health monitoring and intelligent safety early warning system(L F4.4, F4.5)
M8Closed construction during COVID-19(N F2.2, F3.4)
M9Real-time remote monitoring system(L F4.4, F4.5); (N F4.9)
M10Tunnel communication extension system(N F4.4, F4.9)
M11Emergency drill for various accidents(N F3.4, F4.4, F4.8); (P F4.10)