Study on Disease Mechanism and Theoretical Quantification Method of Tunnel Structure

Table 7

Evaluation criteria for leakage of tunnel lining.

Structure	Main situation	Degree of water leakage				Whether it affects driving		Status value
		Injection	Inrush	Hourglass	Impregnation	Yes	No
Arch	Leaking water	✓				✓		4
			✓			✓		3
				✓		✓		2
					✓		✓	1
	Hanging ice					✓		3
							✓	1
Sidewall	Leaking water	✓				✓		3
			✓			✓		2
				✓		✓		2
					✓		✓	1
	Icicle					✓		3
							✓	1
Pavement	Sand outflow					✓		3/4
							✓	1
	Sediment					✓		3/4
							✓	1
	Freeze					✓		3/4
							✓	1