The scattering of elastic waves by underground cavities is an active research topic for its broad applications in various fields, such as earthquake engineering, the blast resistance structures, geophysical exploration, etc. In most previous studies, sounding medium was treated ideal or a saturated poroelastic medium. understanding unsaturated porous media limited. this study, plane P1 and SV c...

geophysical techniques remain the only ways to remotely and non-destructively sense the earth’s near subsurface and as such have the most promising prospect for rapid and accurate detection of underground tunnels. today, electrical resistivity and seismic refraction geophysical methods have been greatly developed to identify structures and underground cavities. in this study, the ability of the...

This research action focuses on the multifunctional adaptation of a small social group composed men and women from different backgrounds living in extreme conditions. An anomic environment is situation encountered during 40 days underground cavities. That definition DEEP TIME mission. In this environmental experimental framework, ethological approach was implemented. It offers complementarity e...

Abstract Recent studies found that some structural damage can be attributed to the effect of surface waves. A shallow underground structure may heavily influenced by waves, which makes lose energy over distance more slowly than body This study deals with evaluating Rayleigh waves (R-waves) interaction cavities on seismic ground response and amplification pattern using Finite Element Method (FEM...

Subsidence can result from the collapse of underground cavities. The impact such subsidence on existing structures and infrastructures is generally dramatic. Geosynthetic reinforcement (GSY) an attractive mitigation solution that be used to reduce this impact. This paper focuses solutions over cavities mainly GSY method. A large-scale physical model (1-g) study mechanisms estimate efficacy for ...

Cemented Paste Backfill (CPB) technology has been effective in using the tailings to refill underground cavities. The wet or dry rock surface can significantly affect stability of CPB-Rock interface, and shear load-bearing capacity interface always reflects overall filled Therefore, clear understanding on behavior with is very important. To investigate different surfaces (wet dry), an apparatus...

Abstract The Apulian region (south-east of Italy) is characterized by the presence old underground cavities used for extraction soft calcarenite rocks and then abandoned over time. assessment stability these caves represents a challenging problem, especially areas possible interaction with overlying structures infrastructures. role environmental factors in triggering disruption processes cave h...

Problems due to underground cavities at the level of soft and polymorphic sandstones, collapses infiltration acid waters through fracture networks have been observed around Kakobola hydroelectric development, constituting potential risks for stability dam. The objective this article aims highlight major cause that can explain generating processes these cavities. Indeed, do this, exploration sub...

As the utilization range of smart devices for infrastructure has widen its application owing to flourishing of smart devices, studies on the technologies to graft IT onto underground utilities are actively carried out. In particular, as underground utilities have a characteristic of invisibility, studies on a management system converged with augmented reality are demanded for the efficient mana...