【摘要】 在蓄水初期,大坝处于一个不稳定的、复杂敏感的工作阶段。随着蓄水加荷,坝基、坝体、近坝库岸边坡等部位的运行性态不断调整变化,有可能向事故方向转化,尤其是在激烈加荷条件下,再加上设计和施工中的重要失误,这种转化很可能被触发而酿成重大事故。因此,在大坝整个生命周期中,蓄水初期是事故风险相对较大的阶段。统计了13座典型大坝蓄水初期事故,对事故原因进行了深入分析,并提出了相应的处理措施。更多还原

【Abstract】 In the initial impoundment period, the dam is in an unstable, complex and sensitive operation stage. With the continuous changes of water loading and the operation behaviors of dam foundation, dam body and slopes, these changes could lead to accident risk. The risk is likely to be triggered and leads to a major accident under the special intense loading conditions and coupled with important mistakes in design and construction stages. Therefore, the initial impoundment period is a relative large accident risk stage in whole life cycle of dam. The accidents of 13 typical dams in initial impoundment period are analyzed and the corresponding countermeasures are also proposed.更多还原