Discussion on main technical problems of earth-rock dam safety evaluation for small-scale reservoirs
Most of the reservoir dams in China have completed a safety appraisal or reinforcement,so their operation state and safety have changed to certain extent.They recently enter a new round of safety evaluation cycle.With the implementation of new dam safety evaluation guideline and relevant standards,there are new requirements for dam safety evaluation.During the new round of dam safety evaluation,different evaluation units have made different judgments on some common technical problems,resulting in vastly different conclusions of safety evaluation,affect-ing the subsequent reinforcement work.The author compared the basic technical requirements of new and old guide-lines,sorted out the frequently seen technical problems,analyzed the nature of the problem,aiming to improve the accuracy of dam safety evaluation.