沥青混凝土心墙坝安全性评价方法及其工程应用

Safety Assessment Method for Asphalt Concrete Core Wall Dam and Its Engineering Application

心墙结构的自身稳定是沥青混凝土心墙坝安全性评价的重点内容之一。笔者通过对沥青混凝土心墙坝安全性评价方法、坝体及心墙安全评判标准进行分析,以新疆呼图壁河石门水电站为例,从坝体应力水平、心墙铅直向应力分布、心墙静止侧压力系数三个方面对沥青混凝土心墙坝和心墙结构进行了计算分析与评价,结果与监测数据基本吻合,说明该评价方法是可靠的,可为后续类似工程提供参考。

The self stability of core wall structure is one of the key contents of safety assessment of asphalt concrete core wall dam.Based on the analysis of the safety assessment method of asphalt concrete core wall dam,the safety assessment standard of dam body and core wall,taking Shimen Hydropower Station of Hutubi River in Xinjiang as an example,the stress and strain of asphalt concrete core wall dam and core wall structure are calculated,analyzed and evaluated from three aspects:dam body stress level,vertical stress distribution of core wall and coefficient of earth pressure at rest of core wall.The analysis results are basically consistent with the monitoring data,which shows that the assessment method is reliable and can provide reference for similar projects in the future.