| 基于RVM-CS的工程区地层渗透系数反演分析 |
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| 引用本文： | 李雅琦,杨杰,程琳,马春辉. 基于RVM-CS的工程区地层渗透系数反演分析[J]. 长江科学院院报, 2020, 37(11): 121-127. DOI: 10.11988/ckyyb.20190825 |
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| 作者姓名： | 李雅琦 杨杰 程琳 马春辉 |
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| 作者单位： | 1.西安理工大学 水利水电学院,西安 710048;2.西安理工大学 西北旱区生态水利工程国家重点实验室培育基地,西安 710048 |
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| 基金项目： | 陕西省水利科技计划项目(2018SLKJ-5) |
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| 摘 要： | 为了准确确定工程区各地层渗透系数,基于相关向量机(RVM)与布谷鸟算法(CS)建立反演分析模型,对研究区域内各地层的渗透系数进行反演分析。首先,基于均匀设计法构造渗透系数组合,利用有限元计算测点水位值并生成RVM学习样本;随后,通过训练RVM构建渗透系数与水头之间的映射关系,使其能够代替有限元方法快速地完成渗流计算;最后,根据工程区钻孔的实测水位值,利用CS算法搜索确定区域内各地层的渗透系数。将建立的渗流反演模型应用于某大型抽水蓄能电站工程区的初始渗流场中,结果表明:所建立的渗流反演模型能够考虑多地层渗透系数和钻孔水头间的非线性,RVM能代替有限元模型,可快速、精确地确定渗透系数;此渗流反演模型在大型抽水蓄能电站工程区反演结果合理,精度满足工程要求。
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| 关 键 词： | 渗透系数 反演分析 相关向量机 布谷鸟算法 均匀设计法 |
| 收稿时间： | 2019-07-16 |
| 修稿时间： | 2019-09-19 |
Inversion Analysis on Permeability Coefficient of Stratum in Engineering Area Based on RVM-CS |
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| LI Ya-qi,YANG Jie,CHENG Lin,MA Chun-hui. Inversion Analysis on Permeability Coefficient of Stratum in Engineering Area Based on RVM-CS[J]. Journal of Yangtze River Scientific Research Institute, 2020, 37(11): 121-127. DOI: 10.11988/ckyyb.20190825 |
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| Authors: | LI Ya-qi YANG Jie CHENG Lin MA Chun-hui |
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| Affiliation: | 1. School of Water Resources and Hydro-electric Engineering, Xi'an University of Technology,Xi'an 710048, China;2. State Key Laboratory of Eco-hydraulics in Northwest Arid Regionof China, Xi'an University of Technology, Xi'an 710048, China |
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| Abstract: | An inversion analysis model integrating relevance vector machine (RVM) and cuckoo search (CS) is established to accurately determine the permeability coefficients of strata in engineering area. Firstly, the uniform design method is employed to construct combinations of permeability coefficients, and the finite element method is used to calculate the water head values and generate RVM learning samples. In subsequence, the mapping relation between permeability coefficient and water head is constructed by RVM training which replaces the finite element method in calculating seepage. According to the measured water head values of drilling holes in the project area, the CS algorithm is adopted to search and determine the permeability coefficient of stratum. The seepage inversion model is applied to the inversion of initial seepage field of a large pumped storage power station project. Results demonstrate that the proposed model reflects the nonlinear relation between water head in borehole and permeability coefficient of multiple strata. RVM could replace the finite element method to determine quickly and accurately the permeability coefficient. The inversion results for the large pumped storage power station are reasonable and the accuracy of the proposed model meets engineering requirements. |
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| Keywords: | permeability coefficient inversion analysis relevance vector machine cuckoo search uniform design method |
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