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我国北方地区土石坝病险水库数量多,分布广,病害灾情复杂,除险加固工程目的是在保证工程正常运行,消除安全隐患。其病害类型主要有水库防洪标准低、抗震标准低、大坝结构和抗滑稳定性差、坝基及坝体渗漏严重等问题。产生的原因主要是标准提高、工程施工中处理不当、结构老化等。文章经分析及实践经验,充分利用现有工程技术,大部分问题是可以被很好地处理,其关键是深刻理解现行规范并在水库除险加固实践中灵活加以运用。
In northern China, the number of dangerous reservoirs for earth-rock dams is large and the distribution is wide. The disease and disaster are complex, and the purpose of reinforcement and reinforcement projects is to ensure the normal operation of the project and eliminate potential safety problems. The main types of diseases include low flood control standards for reservoirs, low seismic standards, poor dam structure and anti-skid stability, serious leakage of dam foundation and dam body. The main reason is the standard to improve, improper construction of the project, such as structural aging. After analyzing and practicing experience, taking full advantage of the existing engineering technology, most of the problems can be handled well. The key point is to deeply understand the current norms and flexibly apply it in practice of reservoir reinforcement and reinforcement.