Influence of Debris-Flow Impact on the Structural Stability of Check Dams

Small check dams are widely used in the Republic of Korea to mitigate and prevent sediment-driven damages by mountain torrents. This study aimed quantify combined effects debris-flow impact forces earth pressures from dam sedimentations on structural stability a incorporating change longitudinal profile channel bed owing sediment deposition. A simulation model (Hyper Kanako) was reproduce behavior 2011 Mt. Umyeon landslide (Seoul, The Korea). Finite element analysis conducted analyze under various debris discharge sedimentation scenarios. magnitudes that were exerted ranged 81.76 kPa non-deposition scenario 123.04 100% deposition scenario. resultant tensile compressive stresses found be up 0.80 0.35 MPa, respectively, which lower than maximum allowable strengths dam, securing sufficient strength for stability. Overall, proposed approach can applied obtain better understanding internal experienced during flow deposition, thereby providing valuable information safety assessment dams.