Rethinking the Water Leak Incident of Tunnel LUO09 to Prepare for a Challenging Future

<div>Scenario for progressing the water leak incident: (a) water leak (SF: backfill; SM = silty sand; CL: low plasticity clay), (b) illustration of the shortest path for groundwater seepage, (c) formation of the surface cave-in on the south side, and (d) formation of the surface cave-in on the north side (SF: backfill; SM = silty sand; CL: low plasticity clay).</div>

Advances in Civil Engineering

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Figure 2

Figure 2: Rethinking the Water Leak Incident of Tunnel LUO09 to Prepare for a Challenging Future 