Research Article

Grouting Treatment of Water and Mud Inrush in Fully Weathered Granite Tunnel: A Case Study

Table 4

Test results of supplementary grouting.

NumberGeological conditionsWater gushing conditionHole formation rate

ZJ-80-8 m is dry soil, and 8-14 m is highly weathered rock.When the drilling is completed, no water will flow out. After the drilling is completed, clear water flow out in 10 minutes. The water flow is 6 L/min.85%
ZJ-90-15 m is dry soil, and 15-20 m is wet soil.Flowing water starts from 20 m, and the flow is 2.1 L/min and the water quality is clear.100%
ZJ-100-12 m is strongly weathered granite.Yellow mud flows out at 12-20 m, and the flow is 1.8 L/min. The water quality is clear after drilling.100%
ZJ-111-15 m is dry soil, and 15-20 m is wet soil.Yellow mud flows out at 12-20 m, and the flow is 6 L/min.100%
ZJ-121-9 m is the weathered rock, and 9-13 m is the strongly weathered rock, which is plastic.Yellow mud flows out at 13-20 m. Water starts to flow out at 18 m, and the water flow is 2.2 L/min. The water quality is yellow mud water.100%
ZJ-130-5 m is dry soil, and 5-21.5 m is strongly weathered rock.Water starts to flow out at 12 m, and the flow is 4.5 L/min. The water quality is clear.100%
ZJ-140-10 m is dry soil, and 10-12 m is strongly weathered granite.Yellow mud flows out at 12-20 m, and the flow is 3.6 L/min.100%