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堰塞坝颗粒级配统计分析

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堰塞坝通常由地震、降雨等诱发,分析堰塞坝物质组成对探究坝体稳定性、开展下游灾害评估具有现实意义.本文利用统计分析方法探究了堰塞坝颗粒级配的数值分布、不同地区坝体的结构差异.在此基础上,通过分析稳定坝和不稳定坝的颗粒级配,发现最大的5%的粗颗粒显著影响堰塞坝稳定性,并通过Principal Component Analysis(PCA)技术提出了一种堰塞坝颗粒级配指标DCI.该研究成果可为堰塞坝风险评估提供参考.
Statistical analysis of particle size distribution in barrier dam
Barrier dams are usually induced by earthquakes and rainfall,so it is of practical significance to analyze the material composition of barrier dam to explore the stability of dams and carry out downstream disaster assessment.In this paper,the numerical distribution of particle gradation and the structural difference of dam body in different regions are investigated by statistical analysis.On this basis,through the Analysis of the particle gradation of stable and unstable dams,it is found that the maximum 5%coarse particles significantly affect the stability of the dam,and a particle gradation index DCI is proposed by Principal Component Analysis(PCA)technology.The research results can provide reference for the risk assessment of dams.

barrier damparticle gradationstatistical analysisstability

尹业欣、吕维亚、李付华、廖海梅

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贵州大学土木工程学院,贵州贵阳 550025

堰塞坝 颗粒级配 统计分析 稳定性

2025

东北水利水电
水利部松辽水利委员会

东北水利水电

影响因子:0.174
ISSN:1002-0624
年,卷(期):2025.43(1)
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