Geophysical surveys as a tool for geotechnical monitoring of disturbed land reclamation

Burlutsky, S.

doi:10.1088/1755-1315/1070/1/012028

Cited by 1 publication

(4 citation statements)

References 10 publications

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“…The integration of seismic and electrical methods proved sufficient for mapping the carbonates and schist tectonic contact at the Mavropigi open pit mine. The present work provides the geophysical results related to the sustainability of lands with the scope to avoid their misuse and to increase geotechnical safety [1,3].…”

Section: Discussionmentioning

confidence: 99%

“…It is shown that the combination of geophysical techniques sensitive to different physical properties can reveal subsurface structures like tectonic contacts, which is not always the case when using the classic engineering geological methods [1]. The seismic reflection method proved useful for a shallow depth of investigation [2][3][4][5].…”

Section: Discussionmentioning

confidence: 99%

“…The geophysical survey in an open pit mine area ensured objectives that are closely connected with sustainability, not only during the exploitation stage, but also in the future reclamation process. These objectives include, among others, the optimization of productivity, cost savings, and zero accidents [1,34].…”

Section: Discussionmentioning

confidence: 99%

“…Open pit mining causes significant land use change and, apart from a negative environmental impact, it can increase the geotechnical risk, due to both the removal of the surface soils and their deposition in different areas, which are usually within the mining site. One of the main aspects of mined area reclamation is to ensure the slope stability of the areas and, thus, to increase geotechnical safety [1][2][3]. Even though this can increase sustainability to a large extent, including the ecological impact at the site, the basic aspect is always safety, including the avoidance of future landslide deformations.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Geophysical Research on an Open Pit Mine for Geotechnical Planning and Future Land Reclamation: A Case Study from NW Macedonia, Greece

Andronikidis,

Kritikakis,

Vafidis

et al. 2023

Sustainability

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In open pit mining areas, knowledge of geotechnical conditions (e.g., overburden thickness, background slope, and fault locations) ensures geotechnical safety during exploitation as well as reclamation planning. The Greek Public Power Corporation initiated a research program after stability issues emerged on the southern side of the Mavropigi open pit mine in NW Macedonia. Geotechnical wells revealed steeply dipping bedrock and thin tectonic contact, indicating the need for the detailed imaging of the subsurface for future stability measures. For this purpose, a geophysical investigation aimed to extract information mostly for the dip of the interface between schist bedrock and overlaying Neogene sediments and/or limestones. Based on the high contrast of electrical properties between schists and limestones, as well as the differences in acoustic impedance and formation thickness, the seismic reflection and electrical resistivity tomography (ERT) methods were selected. The suitability of the seismic reflection for its application in this area was checked by generating synthetic seismic data, which resulted from the simulation of seismic wave propagation for geological models of the area. The acquisition parameters were determined after the noise test. Field seismic data processing produced a depth-migrated section, which revealed the existence of a fault. The use of dipole–dipole and gradient arrays, in 2D and 3D electrical resistivity measurements, ensured both the lateral and vertical mapping of schist bedrock and detected limestone bodies within the overburden. Also, the tectonic contact zone between limestone and schist formations was properly imaged. The comparison between geoelectrical and seismic sections indicated that the seismic reflection method provided a more accurate estimate of fault inclination. Finally, the geophysical survey enriched the geotechnical models necessary for sustainable mining (e.g., rational exploitation, the optimization of productivity, and zero accidents) including the planning of future reclamation.

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Section: Discussionmentioning

confidence: 99%