Insights into Unloading Relaxation Mechanism of Columnar Jointed Basalt at the Baihetan Left Dam Foundation

<div>Influence of excavation of downstream abutment on minimum principal stress distribution on left dam foundation. (a) Unexcavated downstream abutment; (b) excavated downstream abutment.</div>

Advances in Materials Science and Engineering

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Figure 14

Figure 14: Insights into Unloading Relaxation Mechanism of Columnar Jointed Basalt at the Baihetan Left Dam Foundation 