Investigation of Multiple Hole Grouting for Reducing Water Inrush Risk in Underground Engineering

<div>Spatial distribution characteristics of volume grout injected: (a) grouting volume of L<sub>11</sub>; (b) grouting volume of L<sub>10</sub>;(c) grouting volume of L<sub>8</sub>.</div>

Advances in Materials Science and Engineering

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Figure 3

Figure 3: Investigation of Multiple Hole Grouting for Reducing Water Inrush Risk in Underground Engineering 