Design of Advanced GPR Equipment for Civil Engineering Applications

Manacorda, Guido; Persico, Raffaele; Scott, Howard F.

doi:10.1007/978-3-319-04813-0_1

Cited by 7 publications

(2 citation statements)

References 34 publications

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“…The advantages of this method relate to the opportunity to operate over an extensive zone and to check the burrow evolution periodically. Since GPR works using propagating and reflecting electromagnetic waves inside the ground, the data acquired are a function of the round-trip transit time of the pulse and its reflection (Manacorda et al, 2015). The survey results are more reliable the smoother the topographical coverage and the drier the penetrated material are (Reynolds, 1997).…”

Section: Visual Investigation and Gpr Surveymentioning

confidence: 99%

“…Ground penetrating radar (GPR) is a promising geophysical technique in terms of survey velocity, structure nondestructiveness, and cost‐effectiveness to perform quick and easy inspections of large portions of levee body (Di et al, 2010; Szynkiewicz, 2000). Since the early decades of the twentieth century, GPR has been used to detect buried objects, and since 1926 the GPR application has been used to determine the depth of rock strata using the time‐of‐flight method (Manacorda et al, 2015). Even if engineers use the GPR as a nondestructive tool for mapping underground characteristics (Di et al, 2010), GPR applicability to river levee analysis is not supported by extensive literature.…”

Section: Introductionmentioning

confidence: 99%

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Non‐invasive surveys to assess animal burrows as potential causes of levee instability

Pennisi

Musumeci

Grasso

et al. 2023

J Flood Risk Management

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Animal activities threaten levee stability, especially during flood events, increasing levee failure risk. Indeed, while dens alter hydraulically‐induced failure mechanisms, it is difficult to locate them and to know in advance if critical conditions may be reached. This paper demonstrates that it is possible to perform nondestructive surveys to assess the risk of burrow animal activities in levee systems using a ground penetrating radar (GPR) for effective levee structure control, being GPR a nondestructive, expeditious, and cost‐effective geophysical technique. Here, a flood‐prone area in Sicily, where traditional hydraulic phenomena did not justify past levee failure events, is considered a case study. Through a visual inspection survey, several animal holes were recovered. GPR measurements allowed us to explore the levee interior and to detect the presence, distribution, and configuration of dens inside them. It was found that a complex burrow system crosses the entire embankment. Porcupine was recognized as a builder of such cavities. Although, previous studies established the porcupine presence in semi‐humid environments, for the first time, here we provide evidence of the development, articulation, and extension of porcupine burrows inside the levee system.

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Section: Visual Investigation and Gpr Surveymentioning

confidence: 99%