得胜河流域均质土坝渗流分析及防渗加固措施研究-水利工程专业论文.docxVIP

得胜河流域均质土坝渗流分析及防渗加固措施研究 摘 要 土坝的渗漏破坏与渗透变形的理论具有重要的理论意义与工程应用价值。 在我国,许多中小型土坝建于五、六十年代,在当时经济、技术条件匮乏的情况 下,很多都是“三边”工程,这些土坝经过几十年的运行,因渗流引起的渗透破坏、 滑坡非常严重。所以合理、正确地对土石坝进行渗流分析是必不可少的。本文 正是基于以上原因展开对土坝渗流分析。本文阐述了渗流的基本理论、基本方 程和发展现状；应用有限元对土石坝的二维稳定渗流进行了分析,选取变分原理 和插值函数进行求解,经过一系列的数学推导,建立了有限元求解渗流的计算公 式；对得胜河流域水库大坝的特点进行了总结，并针对得胜河流域均质土坝提 出了较为合理的渗流加固措施；结合工程实例，运用 Auto Bank 及 HH-slope 软件,计算了熊官塘水库大坝在不同工况下的渗流稳定情况,分析了熊官塘水库 发生的渗漏是属于何种渗流形式，计算出不同工况下大坝渗流的浸润线、渗流 量、水力坡降和大坝的滑裂面；并对大坝采取截渗措施前后的渗流情况和结构 稳定情况进行了对比，验证了冲抓套井回填粘土防渗墙在熊官塘水库大坝防渗 加固中取得了良好的效果，为得胜河流域土坝防渗加固提供了依据和借鉴。 关键词：得胜河流域 均质土坝 渗流分析 防渗加固措施 The Research of Seepage Analysis and Seepage Reinforcement Measure on the Homogeneous Earth Dam in Deshenghe Drainage Basin ABSTRACT The research of seepage deformation and seepage failure has been important theoretical significance and project application value in the earth dam research. In our country, many small and medium-sized earth rock-fill dams were constructed in 1950s or 1960s and the technology and economy were both want seriously in that time. All sorts of problems have appeared in working for many years, and problems about seepage are very serious, such as slippage, penetrating destroy， so it is necessary to analyze seepage in earth dams feasibly and correctly. The thesis has to evolve seepage analysis on the homogeneous earth dam with the reason. And this thesis describes the seepage of basic theory, basic equations and the present development; Application of two-dimensional finite element seepage were analyzed to select interpolation function variational principle and solved, after a series of mathematical deduction, the establishment of the finite element method for solving seepage; the features of the homogeneous earth dam in Deshenghe Drainage Basin were summarized, and the homogeneous earth dam for a more reasonable flow proposed strengthening measures;With an example, using Auto Bank and HH-slope software, Xiongguantang Reservoir dam seepage in the stability of d