Simulation and analysis of dam leakage inlet detection based on pseudo-flow field method

IF 2.2 3区 地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY Journal of Applied Geophysics Pub Date : 2024-07-08 DOI:10.1016/j.jappgeo.2024.105444
Zengguang Xu, Yongbo Yang, Cheng Cao
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Abstract

Seepage hazards in dams remain a critical issue in flood control engineering. The pseudo-flow field method has shown high efficacy in detecting seepage points within dam structures. This paper delves into the core characteristics of the pseudo-flow field method, aiming to accelerate its detection speed in practical engineering contexts. By employing the Laplace equation for electric current, we established a numerical model to simulate the method's application in real-world scenarios. The simulation reveals the key characteristics of potential and current density distributions along measuring lines within the pseudo-flow field. Both horizontal and vertical measuring lines show a peak distribution of current density and potential near the seepage point, gradually diminishing towards the periphery. Conversely, vertical measuring lines further from the seepage point exhibit minimal changes, presenting a uniform distribution of current density and potential. The results confirm that the pseudo-flow field method can effectively detect seepage locations and that strategic placement of measuring lines can markedly improve detection speed.

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基于伪流场法的大坝渗漏入口检测模拟与分析
大坝的渗流危险仍然是防洪工程中的一个关键问题。伪流场法在检测大坝结构内的渗流点方面显示出很高的效率。本文深入探讨了伪流场法的核心特征,旨在加快其在实际工程中的检测速度。通过使用电流拉普拉斯方程,我们建立了一个数值模型来模拟该方法在实际场景中的应用。模拟揭示了伪流场中测量线的电位和电流密度分布的主要特征。水平和垂直测量线在渗流点附近的电流密度和电位分布都达到峰值,并向外围逐渐减小。相反,离渗流点较远的垂直测量线变化极小,呈现出均匀的电流密度和电位分布。结果证实,伪流场法可以有效地探测渗流点,战略性地布置测量线可以显著提高探测速度。
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来源期刊
Journal of Applied Geophysics
Journal of Applied Geophysics 地学-地球科学综合
CiteScore
3.60
自引率
10.00%
发文量
274
审稿时长
4 months
期刊介绍: The Journal of Applied Geophysics with its key objective of responding to pertinent and timely needs, places particular emphasis on methodological developments and innovative applications of geophysical techniques for addressing environmental, engineering, and hydrological problems. Related topical research in exploration geophysics and in soil and rock physics is also covered by the Journal of Applied Geophysics.
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