宽缝回填在解决宽缝重力坝段侧向稳定问题中的应用  

Application of wide-slot backfill in solving the problem of lateral stability of slotted gravity dam

作　　者：杨春雨 杨清平[2] 刘景 

机构地区：[1]大连理工现代工程检测有限公司,辽宁大连116023 [2]大连理工大学水利工程学院,辽宁大连116085 [3]大连水利建筑设计院,辽宁大连116024

出　　处：《东北水利水电》2016年第10期47-49,72,共3页Water Resources & Hydropower of Northeast China

摘　　要：某宽缝重力坝在大坝施工期间,两个坝段的建基面未开挖除足够范围的平台,经过多年的运行,大坝右岸侧向稳定的问题一直未得到很好的解决,存在严重的安全隐患。虽然在运行期间也尝试过横缝并缝灌浆、坝基固结灌浆等工程措施,但侧向稳定的问题仍未彻底解决。本文通过对不同方案的比较,总结得出采用刚体极限平衡法计算确定需要回填的面积,三维有限元法计算来确定回填的位置的宽缝回填的施工方法,最终实现对大坝的侧向稳定问题得到彻底解决。The platform with the enough range has not been excavated on the foundation plane of the two dam blocks during the construction period for some a slotted gravity dam. After many years of operation, the lateral stability problems of the right bank of the dam have not been solved well and then the dam exists the serious safety hazard. Although the engineering measures of the transverse joint grouting and the consolidation grouting of dam foundation have been tried during the operation period, the problems are still not completely resolved. Comparing with the different methods, the paper summaries and obtains the construction method of wide-slot backfill with the backfilled area determined by the rigid limit equilibrium method and the backfilled position determined by the three dimensional finite element method, which could solve completely the lateral stability problems of the dam.

关 键 词：宽缝重力坝 侧向稳定 宽缝回填 有限元 

分 类 号：TV642.31[水利工程—水利水电工程]