Construction Safety Risk Assessment of Large-Sized Deep Drainage Tunnel Projects

Table 3

Construction safety risk matrix of LSDDTPs.

Consequences	Possibility
	Very high	High	Medium	Low	Very low
Very serious	I	II	III	IV	V
Serious	II	II	III	IV	V
Medium	III	III	III	IV	V
Less	IV	IV	IV	IV	V
Negligible	V	V	V	V	V