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<p>A comprehensive understanding of site characterization and the mapping of geological and geotechnical heterogeneities is essential for effectively designing infrastructure and large-scale projects, including foundations, highways, airports, mining operations, dams, and environmental constructions. Additionally, the challenges posed by lateral heterogeneity in conglomerate bedrock significantly influence the mechanical properties of foundation bedrock that need to address the complex structures requiring 2D and 3D interpretations. To overcome this gap and enhance geotechnical analysis, a combination of Multichannel Analysis of Surface Waves (MASW) and Electrical Resistivity Tomography (ERT) techniques was employed, along with point geotechnical tests, at the Al Maktoum Airport site in Dubai City. This application aims to reveal bedrock topography, identify weak critical zones within the conglomerate bedrock, and evaluate deep-seated soil characteristics. The geotechnical analysis confirmed a low risk of 2D site characterization up to a depth of 30m. However, isolated anomalies were detected in the bedrock through ERT and seismic profiles, indicating heterogeneous zones in the conglomerate deposits characterized by low velocity and very low resistivity. According to the International Building Code (IBC) 2009, the site profile classification falls within the top (C) class, with an average S-wave velocity in the top 30 m (V30) ranging from 360 to 760 m/s. ERT and MASW techniques play a pivotal role in non-invasive and high-resolution geotechnical site investigations, addressing demanding engineering challenges associated with the near-surface features. In terms of detecting soil and bedrock discontinuities, ERT demonstrates superior performance due to its higher-resolution imaging capabilities. This study addresses the needs of the Al Maktoum Airport project. It serves as a model for future infrastructure developments, highlighting the importance of thorough site characterization to mitigate geological uncertainty risks worldwide.</p>

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Geotechnical heterogeneity assessment using MASW and ERT: a case study from Al Maktoum airport, Dubai, UAE

  • 期刊论文

  • 发表日期：

    2026年3月21日

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  • Ahmed J. R. Al-Heety,
  • Khaled S. Gemail,
  • Mohammed H. Hassouneh,
  • Osamah S. Al-Saadi,
  • Bing Zhou,
  • Rana Hassan

摘要

A comprehensive understanding of site characterization and the mapping of geological and geotechnical heterogeneities is essential for effectively designing infrastructure and large-scale projects, including foundations, highways, airports, mining operations, dams, and environmental constructions. Additionally, the challenges posed by lateral heterogeneity in conglomerate bedrock significantly influence the mechanical properties of foundation bedrock that need to address the complex structures requiring 2D and 3D interpretations. To overcome this gap and enhance geotechnical analysis, a combination of Multichannel Analysis of Surface Waves (MASW) and Electrical Resistivity Tomography (ERT) techniques was employed, along with point geotechnical tests, at the Al Maktoum Airport site in Dubai City. This application aims to reveal bedrock topography, identify weak critical zones within the conglomerate bedrock, and evaluate deep-seated soil characteristics. The geotechnical analysis confirmed a low risk of 2D site characterization up to a depth of 30m. However, isolated anomalies were detected in the bedrock through ERT and seismic profiles, indicating heterogeneous zones in the conglomerate deposits characterized by low velocity and very low resistivity. According to the International Building Code (IBC) 2009, the site profile classification falls within the top (C) class, with an average S-wave velocity in the top 30 m (V30) ranging from 360 to 760 m/s. ERT and MASW techniques play a pivotal role in non-invasive and high-resolution geotechnical site investigations, addressing demanding engineering challenges associated with the near-surface features. In terms of detecting soil and bedrock discontinuities, ERT demonstrates superior performance due to its higher-resolution imaging capabilities. This study addresses the needs of the Al Maktoum Airport project. It serves as a model for future infrastructure developments, highlighting the importance of thorough site characterization to mitigate geological uncertainty risks worldwide.