【作者】 王朋；

【导师】 赵明阶；

【作者基本信息】 重庆交通大学 ， 水工结构工程， 2009， 硕士

【摘要】 本文结合国家自然科学基金项目“土石坝渗漏的波-电耦合成像诊断技术研究”(合同编号50779081),运用二维电阻率层析成像技术对土石坝渗漏诊断进行了较系统的应用研究。主要工作如下:(1)较系统的阐述了国内外电阻率成像技术的研究现状、坝体渗漏检测研究发展现状,在此基础上结合实际工程应用提出了本文的主要内容和研究思路。(2)对电阻率层析成像的正反演模型进行了研究,主要介绍了本文采用的正反演算法。(3)针对目前电阻率成像的现场观测系统,介绍了其基本原理、电极装置、野外观测系统的构成,并结合土石坝渗漏特点,对观测系统在土石坝诊断中的适应性进行了研究。(4)从几个方面研究了电阻率成像的解释方法,主要是针对电法的地形影响及定性分析上的研究。(5)对土石坝渗漏的数值模拟进行了研究,利用编制的二维反演程序对土石坝渗漏模型进行了试算和反演收敛性分析,反演效果甚佳。(6)结合壁山县大林水库上游坝体电法渗漏检测,并对结果进行了解释和误差分析。其结果表明原均质土坝在高程329.0米以上的近右坝肩可能存在渗漏隐患,建议将该部分坝体挖除后重新回填碾压。本文的研究是电阻率法对土石坝渗漏的应用型研究,对土石坝的有效维护加固具有十分重要的指导意义。更多还原

【Abstract】 In this article, the National Natural Science Foundation Project "earth-rock dam seepage wave-electric coupling Diagnostic Imaging Technology" (number 50779081), the use of two-dimensional resistivity tomography technology to an in-depth earth-rock dam seepage system.This article includes specific studies as follows:(1)Than the system at home and abroad on the resistivity imaging technology research, research and development of dam leakage detection of the status quo, on the basis of combining a practical application of research in this article, and key.(2)Resistivity tomography on the pros and cons of his model have been studied in this paper introduces the algorithm used by the pros and cons.(3)At present, electrical resistivity tomography for the in situ observing systems, the basic principles of its introduction, the electrode device, the composition of the field observing systems, combined with the characteristics of earth-rock dam seepage, earth-rock dam on the observation system in the diagnosis of adaptation have been studied.(4)Studied from several aspects of the interpretation of the resistivity imaging method, is mainly directed against the topography of the impact of electrical and qualitative research on the fractal.(5)Focused on the numerical simulation of earth-rock dam seepage studies, the use of the preparation procedures for two-dimensional inversion model of the earth-rock dam leakage and the inversion of the spreadsheet analysis of convergence, very good inversion results.(6)Bishan County Daerim combination of the upper reaches of the reservoir dam leakage detection Electricity Act, and the results are the interpretation and error analysis. The results showed that the original homogeneous earth dam at elevation 329.0 meters above the right abutment near the possible leakage problems exist, it is recommended part of the dam re-excavated backfill compacted.This article research is the resistivity method to the earth stone dam leakage application research, has the very important guiding sense to the earth stone dam’s effective maintenance reinforcement.更多还原