基于有限元的引水渠道填筑工程边坡稳定性分析  

Slope Stability Analysis of Diversion Channel Embankment Based on the Finite Element Method

作　　者：孙永春 SUN Yongchun(Donggang Water Resources Service Center,Donggang 118300,China)

机构地区：[1]东港市水资源服务中心,辽宁东港118300

出　　处：《中国水能及电气化》2025年第4期28-32,47,共6页China Water Power & Electrification

摘　　要：引水渠道常穿越多样化的地质构造单元,这些地质构造对边坡的稳定性起着至关重要的作用。不同地层和岩性的岩土性质存在显著差异,这些性质的差异使得边坡在不同部位出现问题,进而对边坡的整体稳定性造成影响。因此,展开了对有限元强度折减法分析引水渠道填筑工程边坡稳定性的研究。通过构建有限元模型,模拟了东港市水资源调配系统中关键引水渠道的砂砾石填筑工程项目。在模拟过程中,采用了有限元强度折减法来求解边坡的稳定安全系数,并进行了不同影响因素下的边坡稳定性数值分析。研究结果表明:引水渠道边坡稳定系数随土体抗剪强度增大而增大,随水位变化速率增大而减小,土体变形参数影响小。土体抗剪强度与水位变化速率对砂砾石填筑渠道边坡稳定性有显著影响。Diversion channels often traverse diverse geological structural units,which play a crucial role in slope stability.The significant differences in geotechnical properties among various strata and lithologies lead to localized slope issues,ultimately affecting overall stability.Therefore,this study investigates the slope stability of diversion channel embankments using the finite element strength reduction method.A finite element model was developed to simulate the gravel embankment project of a key diversion channel in the Donggang City water resource allocation system.The finite element strength reduction method was applied to determine the safety factor of slope stability,and numerical analyses were conducted under different influencing factors.The results indicate that the slope stability coefficient increases with the shear strength of the soil but decreases as the water level variation rate increases,while soil deformation parameters have minimal impact.Shear strength and water level variation rate significantly influence the stability of gravel-filled diversion channel slopes.

关 键 词：有限元分析 水利工程 砂砾石填筑 引水渠道 边坡稳定性 

分 类 号：TV47[水利工程—水工结构工程]