Lu Kai, Li Kaitian, Li Fan, Li Zhenyu, Wang Peng
College of Geology and Environment Xi'an University of Science and Technology, Xi'an, 710054, Shaanxi, China.
School of Geophysics and Geomatics, China University of Geosciences, Wuhan, 430074, China.
Sci Rep. 2025 Jan 6;15(1):904. doi: 10.1038/s41598-025-85368-6.
Seepage accelerates the weathering and destruction of cultural heritage sites, posing a major preservation challenge, while the concealed nature of seepage channels complicates their detection due to noninvasive requirements. In this study, we applied a comprehensive geophysical approach, integrating electrical resistivity tomography (ERT) and self-potential (SP) techniques, to image seepage channels within the Leitai heritage site. These potential seepage channels have already caused a collapse pit measuring 3.1 m × 2.7 m on the site's surface. We began with 2D ERT surveys, which were then combined for 3D inversion to reveal the resistivity structure of the site. Subsequently, SP data were extracted along typical survey lines using interpolation algorithms, and these were inverted to supplement and verify the resistivity structure. The results from both techniques were highly consistent, indicating the presence of internal channels within the site. This comprehensive geophysical approach provides critical insights and references for the subsequent restoration efforts of the Leitai heritage site, ensuring the protection and preservation of this culturally significant landmark. Moreover, the method proposed in this study can be easily applied to the preservation of similar cultural heritage sites elsewhere.
渗水加速了文化遗产地的风化和破坏，构成了重大的保护挑战，而渗流通道的隐蔽性因非侵入性要求使其探测变得复杂。在本研究中，我们应用了一种综合地球物理方法，将电阻率层析成像（ERT）和自然电位（SP）技术相结合，以成像雷台遗址内的渗流通道。这些潜在的渗流通道已经在遗址表面造成了一个3.1米×2.7米的坍塌坑。我们首先进行了二维ERT测量，然后将其组合进行三维反演，以揭示遗址的电阻率结构。随后，利用插值算法沿典型测量线提取SP数据，并对其进行反演以补充和验证电阻率结构。两种技术的结果高度一致，表明遗址内部存在通道。这种综合地球物理方法为雷台遗址的后续修复工作提供了关键的见解和参考，确保了对这一具有文化意义的地标性建筑的保护。此外，本研究中提出的方法可以很容易地应用于其他类似文化遗产地的保护。
