摘要
水力劈裂对心墙坝的蓄水期安全有较大的影响,现在主要通过有效应力法和总应力法进行计算分析判定,本文结合瀑布沟心墙堆石坝,运用这两种方法对心墙进行分析,对比它们存在的差别。根据监测分析结果,总应力法更具有合理性,此外,心墙上游侧较大应力水平可能产生剪切破坏,加剧水力劈裂的影响。
The hydraulic fracturing has a great influence on the safety of the retaining water period of the core dam.At present,the influence is mainly calculated,analyzed and discriminated by the effective stress method and the total stress method.According to the Pubugou core rockfill dam,these two methods are applied to analyze the core wall and compare their existing differences.Based on the monitoring and analysis results,the total stress method is more reasonable.In addition,the larger stress levels on the upstream side of core dam may cause shear damage,which would aggravate the effects of hydraulic fracturing.
出处
《东北水利水电》
2019年第4期57-59,72,共4页
Water Resources & Hydropower of Northeast China
关键词
心墙坝
水力劈裂
有效应力法
总应力法
core dam
hydraulic fracturing
effective stress method
total stress method
