Properties and Applications of a New Chemical Grouting Material

Table 11

Tunnel leakage before and after grouting.

Order number	Sections	Water inflow of track bed surface (L/d)		Water depth in drains (mm)
		Before grouting	After grouting	Before grouting	After grouting
1	K248 + 300	0.5	nil	18 (water)	3 (water)
2	K250 + 516	9	nil	36 (mud)	5 (water)
3	K251 + 217	32	nil	136 (mud)	4 (water)
4	K251 + 400	15	nil	82 (mud)	3 (water)