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很多水库经过几十年的长期运行都存在不同程度的病险,主要表现为:水库防洪标准低;抗震标准低;大坝稳定性差以及坝体、坝基渗漏严重;输水及泄洪建设物老化;金属结构和机电设备不能正常运行;防汛公路不畅,管理设施、观测设备不完善。因而在水库除险加固时应针对病险成因,进行大坝加高与泄水建筑物扩建方案比选,采取相应的技术措施,确定加固定方案,保证建筑物安全。
Many reservoirs have different degrees of risk after decades of long-term operation, mainly as follows: low flood control standards for reservoirs; low seismic standards; poor stability of dams; serious seepage of dam foundation and dam foundation; ; Metal structures and mechanical and electrical equipment can not operate normally; flood control roads are poor, management facilities, observation equipment is not perfect. Therefore, in the reinforcement of the reservoir should be for the cause of the risk, the dam dilapidated buildings and expansion plans comparison, take the appropriate technical measures to determine the plus fixed program to ensure the safety of buildings.