Table 13 Risk factors of subway construction-environmental factor (part).
Number | Safety risk factor | Number | Safety risk factor | Number | Safety risk factor |
|---|---|---|---|---|---|
EF1 | Typhoon | EF6 | Uneven ground | EF11 | Toxic and harmful gas |
EF2 | Rain | EF7 | Soil disturbance | EF12 | Lack of soil stability |
EF3 | Soft soil | EF8 | Slippery road surface | EF13 | Complicated hydrogeological conditions |
EF4 | Weak foundation | EF9 | Groundwater abundance | EF14 | Long exposure time of foundation pit |
EF5 | Geological cavity | EF10 | Poor geological condition |
