Table 2.
Number and corresponding probability of deep foundation pit construction accidents in metro stations from 2000 to 2023.
| Type of coupling | Risk factor | Accident code | Accident count | Accident probability | Type of coupling | Risk factor | Accident code | Accident count | Accident probability |
|---|---|---|---|---|---|---|---|---|---|
| Single-factor coupling | - | P00000 | 0 | 0.0000 | Multi-factor coupling | p-w-m | P11100 | 5 | 0.0254 |
| p | P10000 | 7 | 0.0355 | p-w-e | P11010 | 9 | 0.0457 | ||
| w | P01000 | 4 | 0.0203 | p-w-t | P11001 | 2 | 0.0102 | ||
| m | P00100 | 1 | 0.0051 | p-m-e | P10110 | 15 | 0.0761 | ||
| e | P00010 | 12 | 0.0609 | p-m-t | P10101 | 2 | 0.0102 | ||
| t | P00001 | 3 | 0.0152 | p-e-t | P10011 | 5 | 0.0254 | ||
| Double-factor coupling | p-w | P11000 | 9 | 0.0457 | w-m-e | P01110 | 4 | 0.0203 | |
| p-m | P10100 | 1 | 0.0051 | w-m-t | P01101 | 3 | 0.0152 | ||
| p-e | P10010 | 3 | 0.0152 | w-e-t | P01011 | 2 | 0.0102 | ||
| p-t | P10001 | 8 | 0.0406 | m-e-t | P00111 | 4 | 0.0203 | ||
| w-m | P01100 | 3 | 0.0152 | p-w-m-e | P11110 | 17 | 0.0863 | ||
| w-e | P01010 | 3 | 0.0152 | p-w-m-t | P11101 | 14 | 0.0711 | ||
| w-t | P01001 | 3 | 0.0152 | p-w-e-t | P11011 | 16 | 0.0812 | ||
| m-e | P00110 | 1 | 0.0051 | p-m-e-t | P10111 | 12 | 0.0609 | ||
| m-t | P00101 | 3 | 0.0152 | w-m-e-t | P01111 | 4 | 0.0203 | ||
| e-t | P00011 | 2 | 0.0102 | p-w-m-e-t | P11111 | 20 | 0.1015 |