Determining the location and boundary of underground obstructions and/or anomalies is a
common problem and often a great challenge for tunneling and underground construction …

This study aims to take the advantage of ambient noise recordings rich in low-frequency
components for deep site characterization. We investigate the capabilities of a recently …

Karst voids at pile locations are highly adverse to the bearing capacity and construction
safety of cast-in-place pile foundations. This study developed an inspection system …

We develop a new 3D ambient noise tomography (3D ANT) method for geotechnical site
characterization. It requires recording ambient noise fields using a 2D surface array of …

Sparsity constraints have been widely adopted in the regularization of ill-posed problems to
obtain subsurface properties with sparseness features. However, the target parameters are …

In subway construction, the presence of boulders can significantly impact excavation and
tunneling processes. However, despite these challenges, an effective and reliable method …

With the deepening of oil and gas exploration and development, the conventional seismic
inversion technology has certain limitations for the fine research of complex reservoirs, and …

Regarding passenger safety and road serviceability, the effects of earthquakes on
underground transportation systems situated in seismically active regions yield a great …

ABSTRACT A first-time application of 3D ambient noise tomography (3D ANT) method is
presented for detection of deep voids. The method is based on the solution of 3D P-SV …

Seismic methods are often used for geotechnical site characterization tasks to minimize the
risk to the safety of the traveling public. While the active-source seismic methods can provide …