| 参数优化方法在电法测试土体裂隙深度中的应用 |
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| 引用本文： | 周文斌,赵仲辉,赵含梅,胡孝彭.参数优化方法在电法测试土体裂隙深度中的应用[J].科学技术与工程,2014,14(2). |
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| 作者姓名： | 周文斌 赵仲辉 赵含梅 胡孝彭 |
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| 作者单位： | 河海大学岩土力学与堤坝工程教育部重点实验室,河海大学岩土力学与堤坝工程教育部重点实验室;浙江大学软弱土与环境土工教育部重点实验室,河海大学岩土力学与堤坝工程教育部重点实验室,河海大学岩土力学与堤坝工程教育部重点实验室 |
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| 基金项目： | 国家重点基础研究发展规划项目(2012CB719805),(浙江大学)开放基金资助项目(2011904) |
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| 摘 要： | 裂隙对土质边坡的稳定性、垃圾覆盖层的防渗性等有重大的影响,因此裂隙定量化研究具有重要的意义,尤其是建立裂隙三维网络分布。本文模拟了二维裂隙沿深度发育的物理过程,使用电阻率法测得不同裂隙深度下土体的电学响应。通过有限单元法与参数优化方法联合反演裂隙深度,并将计算得出的裂隙深度与裂隙深度的标定值进行比较。经分析知,有限单元法数值结果能够与实际测量值较好地吻合;参数优化方法可以有效地估计出裂隙深度。将裂隙深度的计算值与标定值比较得知,该种反演方法测试所得的裂隙深度标准差为电极距离的0.26倍。
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| 关 键 词： | 电阻率 反演 裂隙 深度 参数优化 |
| 收稿时间： | 8/9/2013 12:00:00 AM |
| 修稿时间： | 9/5/2013 12:00:00 AM |
Parameter Optimization Method Used in Soil Crack Depth Determination Based on Electrical Resistivity |
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| ZHOU Wenbin,CHIU C F,ZHAO Hanmei and HU Xiaopeng.Parameter Optimization Method Used in Soil Crack Depth Determination Based on Electrical Resistivity[J].Science Technology and Engineering,2014,14(2). |
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| Authors: | ZHOU Wenbin CHIU C F ZHAO Hanmei and HU Xiaopeng |
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| Institution: | Key Lab of Ministry of Education for Geomechanics and Embankment Engineering,Hohai Univ,Key Lab of Ministry of Education for Geomechanics and Embankment Engineering,Hohai Univ,Key Lab of Ministry of Education for Geomechanics and Embankment Engineering,Hohai Univ |
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| Abstract: | Cracks have a dramatic influence on the properties of soil. Thus, the quantification of 3D crack net work has a significant importance. This paper presented a physical model of 2-Dimensional crack propagation. Resistivity method was used to measure the electrical response of soil due to different crack depth. Then finite element method and parameter optimization method were used to determine the soil crack propagation depth. It is founded that the results of FEM can suit well with the test results and the damped least squared method can predict the crack depth of soil effectively and the standard error between calibration value and calculation value is 0.26 times of electrode distance. |
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| Keywords: | resistivity inversion crack depth parameter optimization method |
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