大坝典型坝段渗流计算研究  

Study on Seepage Calculation of a Typical Dam Section

作　　者：刘巍巍[1] 何鲜峰[1] LIU Weiwei;HE Xianfeng(Yellow River Water Conservancy Research Institute,Zhengzhou 450003,China)

机构地区：[1]黄河水利科学研究院,河南郑州450003

出　　处：《河南科技》2022年第15期59-62,共4页Henan Science and Technology

基　　金：国家基金委黄河联合基金(U2243223);国家自然科学基金(42041006);黄河水利科学研究院基本科研业务费专项项目(HKY-JBYW-2021-10)。

摘　　要：为研究不同工况条件下混凝土重力坝的渗流形态,采用SEEP/W软件对某大坝典型坝段进行渗流分析,建立混凝土重力坝断面二维渗流场与应力场耦合模型,获得不同工况条件下典型坝段流线示意图及渗压系数,并与典型监测工况进行对比分析。结果表明:大坝渗流流网整体分布态势较好;由浸润线形状可以看出,坝轴线灌浆帷幕起到了很好的防渗作用。在各种工况下,计算得到的典型坝段渗压系数小于0.25,满足规范中对渗压系数的要求。In order to study the seepage pattern of concrete gravity dam under different working condi⁃tions,SEEP/W software is used to analyze the seepage of a typical dam section,the coupling model of two-dimensional seepage field and stress field of concrete gravity dam section is established,the stream⁃line diagram and seepage pressure coefficient of typical dam section under different working conditions are obtained,and compared with typical monitoring conditions.The results show that the overall distribu⁃tion trend of dam seepage flow network is good;it can be seen from the shape of phreatic line that the grouting curtain along the dam axis plays a good role in seepage prevention.Under various working con⁃ditions,the calculated seepage pressure coefficient of typical dam section is less than 0.25,which meets the requirements for seepage coefficient in the code.

关 键 词：渗流 重力坝 渗压系数 洪水位 

分 类 号：TV223.4[水利工程—水工结构工程]