南水北调工程淅川段渠道边坡渗流稳定性分析

发布时间：2018-02-10 19:28

本文关键词： 渗流分析边坡稳定 Seep3D软件理正软件安全系数　出处：《河北工程大学》2014年硕士论文　论文类型：学位论文

【摘要】：南水北调中线工程淅川段大部分处于膨胀土段，对边坡的稳定性分析显得尤为迫切。工程建设是否真的达到预期建设目的与边坡是否稳定密切相关，而影响边坡稳定性的因素十分众多，边坡失稳的主要因素之一就是地下水渗流，所以分析地下水渗流对边坡稳定性的影响具有很重要的意义和实际的工程价值。本文选取南水北调中线工程淅川段的典型渠段为研究对象，立足于渗流的基本理论，通过数值模拟和有限元分析计算，研究边坡处于不同的地下水位时的稳定性情况，，得出结论从而指导工程实践。本文主要研究内容如下： 1、取不同的地下水位分别建立渠道边坡的三维有限元渗流模型，应用Seep3D软件对所取的不同地下水位的渗流模型进行分析求解，分别得到了边坡浸润线图和浸润线的精确坐标。 2、基于Seep3D软件建模分析得到的边坡浸润线图和浸润线精确坐标，再用理正软件对边坡渗流稳定性进行分析。 3、通过理正软件分析得到抗滑稳定安全系数，与我国的《堤防工程设计规范》（GB T50286-98）中通过查表得到的抗滑稳定安全系数进行大小比较，从而界定所选渠段边坡的是否会发生破坏。 4、通过理论分析、数值模拟，以及人工智能优化后确定出适用于南水北调中线渠道工程的具有普遍性、实用性的技术和方法，对渗流作用下的边坡的稳定问题的分析和安全评价提供一套理论和技术支持。为实际工程的建设中出现相类似的情形提供一个参考，待足够多的工程实际验证以后便可以在实际工程中加以运用。
[Abstract]:Most of the Xichuan section of the South-to-North Water transfer Project is in the expansive soil section, so it is urgent to analyze the slope stability. However, there are many factors that affect slope stability. One of the main factors of slope instability is groundwater seepage. Therefore, it is of great significance and practical engineering value to analyze the influence of groundwater seepage on slope stability. In this paper, the typical channel section of Xichuan section of South-to-North Water transfer Project is selected as the research object, based on the basic theory of seepage. Through numerical simulation and finite element analysis, the stability of slope at different groundwater level is studied, and the conclusion is drawn to guide engineering practice. The main contents of this paper are as follows:. 1. Three dimensional finite element seepage model of canal slope is established with different groundwater level. The seepage model of different groundwater level is analyzed and solved by Seep3D software, and the exact coordinates of infiltration line and infiltration line are obtained respectively. 2. Based on the exact coordinates of the soakage curve and the infiltrating line obtained by the Seep3D software, the seepage stability of the slope is analyzed by using Lizheng software. 3. The safety factor of anti-slide stability is obtained by software analysis, and compared with the safety factor of anti-slide stability obtained by checking table in "Design Code for dyke Engineering" (GB T50286-98), so as to determine whether the slope of the selected channel section will be damaged. 4. Through theoretical analysis, numerical simulation and artificial intelligence optimization, the universal and practical techniques and methods for the middle route channel project of South-to-North Water transfer Project have been determined. It provides a set of theoretical and technical support for the analysis and safety evaluation of slope stability under seepage and provides a reference for similar situations in practical engineering construction. After enough engineering is verified, it can be used in practical engineering.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV68;TV223.4

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