吴江江，王胜利，张永华，吕涛（中国能源建设集团陕西省电力设计院有限公司，陕西西安　710054）



深厚覆盖层上超硬岩快速填筑面板堆石坝三维应力变形有限元数值模拟

吴江江，王胜利，张永华，吕涛
（中国能源建设集团陕西省电力设计院有限公司，陕西西安710054）

ABSTRACT：The Practica1 Prob1ems met in the construction of the CFRD of Miaojiaban HydroPwer Station on the deeP overburden foundation inc1ude：1）The hardness of the dam fi11ing materia1 is very 1arge and the construction time is tight；2）the fi11ing quantity is 1arge，and 3）the fi11ing Process is comP1ex. In this PaPer，the three -dimensiona1 finite e1ement software ADINA is used to estab1ish the CFRD entity mode1 to simu1ate and ana1yze the entire Process of the raPid fi11ing of the dam，ca1cu1ate and ana1yze the deformation，disP1acement and stress changes at each stage of the CFCD fi11ing，and sett1ement and trend of stress changes after the water storage in the dam is comP1eted. The achievement of research in this PaPer has certain Practica1 va1ue to the raPid bui1ding of the dam on the deeP overburden foundation with suPer hard rocks and has certain reference va1ue to the simi1ar Projects，and Part of the resu1ts of the research has been a1ready used the the design and construction of Miaojiaban HydroPwer Station Project.

KEY W0RDS：CFRD；deeP overburden foundation；suPer hard rock；fi11ing dam raPid1y；ADINA

摘要：结合建在深厚覆盖层上的苗家坝水电站面板堆石坝施工中遇到的实际问题——大坝填筑料硬度很大而且工期紧，填筑工程量大，填筑工序复杂。通过对大型非线性有限元通用软件ADINA的改进和开发，建立了面板堆石坝的三维数值模型，对大坝快速填筑坝的全过程进行数值模拟，计算分析此面板堆石坝填筑到各个时期的位移和变形、大小主应力的变化以及填筑完成蓄水以后坝体沉降和应力的变化趋势等。文章研究成果对在深厚覆盖层地基上利用超硬岩堆石料进行快速筑坝具有一定的实用价值，对类似的工程也有比较大的参考价值，部分研究成果已在该工程的设计和施工中得到应用。

关键词：面板堆石坝；深厚覆盖层；超硬岩；快速筑坝；ADINA

随着我国水利水电事业的发展，水工建筑物规模不断扩大，对相应的技术要求也随之不断提高。例如在地质条件差且复杂的深厚覆盖层地基上建坝，渗漏、渗透稳定、沉陷、不均匀沉陷及砂土液化等问题均较突出，对深厚覆盖层的基础处理、防渗技术提出了新挑战；随着高坝的兴建，优化结构布置与料区分布，缩短设计周期，降低工程造价也非常重要[1-2]。……