Application of GPR to the monitoring of river embankments

Prinzio, M. Di; Bittelli, Marco; Castellarin, Attilio; Pisa, Paola Rossi

doi:10.1016/j.jappgeo.2010.04.002

Cited by 103 publications

(64 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In assessing changes in travel time two-way (between the emitter and reflector to the receiver) and the magnitude of the reflection (absolute magnitude) alon g a profile, the characteristics of the reflector can be identified (equations below for non-magnetic materials). The speed of the wave prop a g a tion mainly depends on electromagnetic properties of the material, and these are governed by the water content [13][14][15][16].…”

Section: Internal Structure Of the Dam From Geophysical Observation Gmentioning

confidence: 99%

“…In general, the frequency assigned to the antennas affects the depth of investigation and resolution of the radar image. The higher the frequency, the depth of the penetration is smaller but the resolution is higher [14]. The depth of penetration also varies depending on the water content [14,16,36].…”

Section: Internal Structure Of the Dam From Geophysical Observation Gmentioning

confidence: 99%

“…The higher the frequency, the depth of the penetration is smaller but the resolution is higher [14]. The depth of penetration also varies depending on the water content [14,16,36]. Neal [13] did an excellent review on those complexities in sedimentology.…”

Section: Internal Structure Of the Dam From Geophysical Observation Gmentioning

confidence: 99%

“…Anyhow, the importance of validating the resistivity data interpretation by geotechnical drilling must be considered. Table 1: Dielectric permittivity ( ε r ), conductivity ( σ ) and the velocity (V ) of materials [14,16]. …”

Section: Electric Resistivitymentioning

confidence: 99%

See 3 more Smart Citations

Auscultation of a Dam for Mining Restoration in Quebec, Canada

Yaya¹,

Cheng²

2016

J Civil Environ Eng

View full text Add to dashboard Cite

The tailing management is a long term concern for environment and social security. Following the discovery of a new gold mineralization, a mining company aims at reusing one of tailings storage facility at the mining site. However, there is a small treated water reservoir (polishing pond) downstream of the Northwest dam. It is therefore important to know the present state of the Northwest dam's internal structure. Geophysical methods of electrical resistivity and georadar were used for the auscultation of the Northwest dam. Numerical models were subsequently used to assess the geotechnical behavior of the dam in different deposition situations by simulating the restoration.The image processing results of georadar data show a layered structure near the surface. Changes in electrical resistivity offer deeper information than georadar. The lateral variability of the electrical resistivity corresponds to heterogeneity within each layer. As we cannot collect samples for the characterization of materials, the geophysical interpretation results help to estimate the compositional structure of the dam; ultimately it helps in numerical modeling on the safety factor estimation.

show abstract

Section: Internal Structure Of the Dam From Geophysical Observation Gmentioning

confidence: 99%

Section: Internal Structure Of the Dam From Geophysical Observation Gmentioning

confidence: 99%

Section: Internal Structure Of the Dam From Geophysical Observation Gmentioning

confidence: 99%

Section: Electric Resistivitymentioning

confidence: 99%

See 2 more Smart Citations

Auscultation of a Dam for Mining Restoration in Quebec, Canada

Yaya¹,

Cheng²

2016

J Civil Environ Eng

View full text Add to dashboard Cite

show abstract

“…Looking at the seismic noise can allow monitoring of the internal erosion of the embankments in a time-lapse manner (Planès et al 2016). Other geophysicists preferred the use of ground-penetrating radar (GPR) for the monitoring of river embankments (Di Prinzio et al 2010) and detection of 1 3…”

Section: Introductionmentioning

confidence: 99%

Reservoir assessment using non-invasive geophysical techniques

2018

View full text Add to dashboard Cite

This paper describes the use of three geophysical techniques to detect potential seepage that could jeopardise the integrity of reservoir embankments, could induce partial or total collapse and pose a risk to the population nearby. A fast-scanning geophysical technique using two dipole electromagnetic (EM) profile apparatus GEM2 provided the first step to detect the weakest points on the selected dams in order to proceed to a more detailed analysis and visualisation of the soil erosion (fissuring or piping) using electrical resistivity tomography (ERT). Finally, self-potential surveys were carried out to relate to the EM and ERT anomalies that could be pathways for seepage and changes of the water displacement inside the embankment. The three geophysical techniques used were evaluated in one case study of reservoir in a location relevant to flooding issues in Czech Republic. A risk approach based on the geophysical results was undertaken for the reservoir embankment. The three techniques together were compared for the same problematic section and confirmed seepage by showing similar results. Conclusions were also drawn on the efficiency of using these three techniques as a package to give a comprehensive non-invasive assessment to be used as common practice by local authorities and environment agencies whereby remedial action could be recommended to protect assets and civilians.

show abstract

High‐resolution imaging and monitoring of animal tunnels using 3D ground‐penetrating radar

Allroggen

Booth

Baker

et al. 2019

Near Surface Geophysics

View full text Add to dashboard Cite

Ground‐penetrating radar is widely used to provide highly resolved images of subsurface sedimentary structures, with implications for processes active in the vadose zone. Frequently overlooked among these structures are tunnels excavated by fossorial animals (e.g., moles). We present two repeated ground‐penetrating radar surveys performed a year apart in 2016 and 2017. Careful three‐dimensional data processing reveals, in each data set, a pattern of elongated structures that are interpreted as a subsurface mole tunnel network. Our data demonstrate the ability of three‐dimensional ground‐penetrating radar imaging to non‐invasively delineate the small animal tunnels (∼5 cm diameter) at a higher spatial and geolocation resolution than has previously been achieved. In turn, this makes repeated surveys and, therefore, long‐term monitoring possible. Our results offer valuable insight into the understanding of the near‐surface and showcase a potential new application for a geophysical method as well as a non‐invasive method of ecological surveying.

show abstract

Application of GPR to the monitoring of river embankments

Cited by 103 publications

References 28 publications

Auscultation of a Dam for Mining Restoration in Quebec, Canada

Auscultation of a Dam for Mining Restoration in Quebec, Canada

Reservoir assessment using non-invasive geophysical techniques

High‐resolution imaging and monitoring of animal tunnels using 3D ground‐penetrating radar

Contact Info

Product

Resources

About