不同软件在土石坝渗流稳定计算中的比较分析  

Comparative Analysis of Different Software for Seepage and Stability Calculations in Earth-Rock Dams

作　　者：白崇宇 BAI Chongyu(Liaoning Water Conservancy Affairs Service Center,Shenyang,Liaoning 110007)

机构地区：[1]辽宁省水利事务服务中心,辽宁沈阳110007

出　　处：《水利水电工程设计》2025年第2期44-48,共5页Design of Water Resources & Hydroelectric Engineering

摘　　要：针对某中型水库安全鉴定工程,根据相关的地质条件和实际情况,基于理正岩土软件、Autobank软件及Midas GTS NX软件分别建立数值模型,应用有限元进行分析,计算正常运用条件、非常运用条件下土石坝的渗透稳定安全系数及坝坡稳定安全系数。计算结果表明,各工况浸润线分布规律合理,下游坝坡出逸点高程在排水棱体顶高程以下,出逸比降小于允许渗透比降,渗漏量与实测值接近,计算得出的稳定安全系数大于规范要求的允许稳定安全系数,大坝渗透稳定和坝坡稳定满足要求。相关成果可为类似的土石坝安全评价提供重要借鉴意义。This study evaluates the seepage and slope stability of an earth-rock dam as part of a safety assessment for a mediumsized reservoir.Numerical models are developed using Lizheng Geotechnical Software,Autobank Software,and Midas GTS NX Software based on the specific geological conditions and field data.Finite element analysis is conducted to assess the dam's performance under normal and extreme operating conditions.The results show that the phreatic line distributions are reasonable across all scenarios.The elevation of the downstream slope escape point remains below the crest of the drainage prism,the escape gradient is less than the allowable seepage gradient,and the calculated seepage rates are consistent with measured values.Additionally,the stability safety factors exceed the regulatory requirements,confirming that both the seepage stability and slope stability of the dam meet the necessary standards.These findings provide valuable references for the safety evaluation of similar earth-rock dams.

关 键 词：土石坝 Autobank MIDAS 有限元分析 渗透稳定 坝坡稳定 

分 类 号：TV641[水利工程—水利水电工程]