Study on the Influence of Water Level on Earth Dam Reinforced by Cut-Off Wall: A Case Study in Wujing Reservoir

The construction of a cut-off wall is common reinforcement method for earth rock dams. At present, compared with the in-depth study on homogeneous dams, more and attention being paid to stability deformation dams strengthened by concrete wall. In this study, aiming at Wujing project dam wall, influence water level rise fall slope, body, crack width crest were analyzed numerical calculation in situ measurement. analysis results show that when reservoir encounters sudden drawdown, safety factor slope decreases sharply. faster decreases. When rises, dam’s horizontal displacement shifts upstream direction, change downstream significantly larger than measuring point slope. surface body fluctuation settlement shows side side, especially during period abrupt level. longitudinal cracks tendency shrinkage opening decrease gradient increment increases increase increment.