Recursos de colección

ORBi Open Repository and Bibliography (297.212 recursos)

In may 2007, the ULg's Administrative Board (joined in June 2007 by the FUSAGx) decided to create an institutional repository and defined a strong institutional self-archiving policy to increase the visibility, accessibility and impact of the University's publications (Board's decision). This decision led to the official launch, in November 2008, of the ORBi platform including both the Academic Bibliography and the Institutional Repository of the Wallonia-Europe University Academy.

Engineering, computing & technology => Geological, petroleum & mining engineering

Mostrando recursos 1 - 8 de 8

  1. Integration of geophysical and seismological data to analyse the subsurface geometry of an unstable slope: case-study of Kainama (Kyrgyzstan)

    Danneels, Gaëlle; Havenith, Hans-Balder; Torgoev, I.; Pirard, Eric

  2. 3D morphological characterization of silicon particles with X Ray tomography

    Gregoire, Max; Cnudde, Veerle; Masschaele, B.; Jacobs, Patrick; Pirard, Eric

  3. Subsidence related to groundwater pumping for breweries in Merchtem area (Belgium), highlighted by Persistent Scaterrer Interferometry

    Declercq, Pierre-Yves; Gerard, Pierre; Pirard, Eric; Perissin, Daniele; Walstra, Jan; Devleeschouwer, Xavier
    Peer reviewed

  4. The Prediction-Focused Approach: An opportunity for hydrogeophysical data integration and interpretation in the critical zone

    Hermans, Thomas; Nguyen, Frédéric; Klepikova, Maria; Dassargues, Alain; Caers, Jef
    Two important challenges remain in hydrogeophysics: the inversion of geophysical data and their integration in quantitative subsurface models. Classical regularized inversion approaches suffer from spatially varying resolution and yield geologically unrealistic solutions, making their utilization for model calibration less consistent. Advanced techniques such as coupled inversion allow for a direct integration of geophysical data; but, they are difficult to apply in complex cases and remain computationally demanding to estimate uncertainty. We investigated a prediction-focused approach (PFA) to directly estimate subsurface physical properties relevant in the critical zone from geophysical data, circumventing the need for classic inversions. In PFA, we seek a...

  5. The effect of initial water distribution and spatial resolution on the interpretation of ERT monitoring of water infiltration

    Dumont, Gaël; Pilawski, Tamara; Robert, Tanguy; Hermans, Thomas; Garré, Sarah; Nguyen, Frédéric
    A better understanding of the water balance of a landfill is crucial for its management, as the waste water content is the main factor influencing the biodegradation process of organic waste. In order to investigate the ability of long electrical resistivity tomography (ERT) profiles to detect zones of high infiltration in a landfill cover layer, low resolution time lapse data were acquired during a rainfall event. Working at low resolution allows to cover large field areas but with the drawback of limiting quantitative interpretation. In this contribution, we use synthetic modeling to quantify the effect of the following issues commonly...

  6. A fully coupled hydro-mechanical model for the modeling of coalbed methane recovery

    Bertrand, François; Cerfontaine, Benjamin; Collin, Frédéric
    Peer reviewed

  7. A new approach for time-lapse data weighting in ERT

    Lesparre, Nolwenn; Nguyen, Frédéric; Kemna, Andreas; Robert, Tanguy; Hermans, Thomas; Daoudi, Moubarak; Flores Orozco, Adrian
    Peer reviewed

  8. Shallow geothermal energy: effect of in-situ conditions on borehole heat exchanger design and performance

    Radioti, Georgia
    The in-situ conditions are critical for the performance of Borehole Heat Exchangers (BHEs). However, in practice they are often not adequately considered, overwhelming the potential of these systems. This thesis focuses on the accurate estimation of the in-situ characteristics and on their influence on the design and the behaviour of BHEs based on an in-situ study of an heterogeneous bedrock in a semi-urban environment (campus of the University of Liege, Liege, Belgium). The experimental site consists of four double-U BHEs, of about 100 m long, installed over a surface area of 32 m² and equipped with fiber optic cables. Several...

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