Results 41 to 50 of about 136,634 (354)
Sub-hourly simulation of residential ground coupled heat pump systems
, 2006 Residential Ground Coupled Heat Pump systems are usually characterised by an ON/OFF behaviour of the heat pump with typical cycling frequencies of 1 - 4 cycles per hour.
Bernier, M. +5 more
core +1 more source
New borehole heat exchanger thermal enhanced grout formulations
, 2021 In shallow geothermal systems, especially ground source heat pumps (GSHP), cementitious grouts play a decisive role in guaranteeing an efficient heat transfer between the probe and the surrounding ground.
Ludovico Mascarin +9 more
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Journal of Applied Sciences and Environmental Management, 2018 Previous studies revealed that soil properties play a significant role in aquifer contamination. Consequently, it is necessary to understand the nature and properties of soil in carrying out groundwater evaluation.
O.M. Omorogieva, O.I. Imasuen
doaj +1 more source
Tunnel assessment with borehole radar
, 2017 The collapse of a tunnel and the damage in a second tunnel during the construction works, forced to the assessment of the ground in the front tunnel of the second structure, in order to avoid additional problems. The first evaluation was carried out with
Caselles Magallón, Josep Oriol +3 more
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Anisotropic Borehole Stress Program
, 2019 Software developed to calculate the stress concentrations in the vicinity of a borehole drilled at an arbitrary direction through an elastically anisotropic rock formation. The code developed is based on the Lekhnitskij-Amadei solution.
Wei Li, Maria Tibbo, Douglas R. Schmitt
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Borehole seismic methods for opencast coal exploration [PDF]
, 1990 Surface seismic techniques lack the resolution to image the top 100m or so of the earth's surface necessary for opencast coal exploration. The work reported in this thesis is the development of borehole seismic methods making use of the closely spaced ...
Kragh, J. Edward
core
, 2013 [1] In situ test of hydraulic fracturing (HF) provides the only way to observe in situ stress magnitudes directly. The maximum and minimum horizontal stresses, SHmax and Shmin, are determined from critical borehole pressures, i.e., the reopening pressure
Ito, Takatoshi +21 more
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Deep Underground Science and Engineering, EarlyView.Hydraulic fracturing in tight sandstone and fracture propagation characteristics using backscattered electron‐scanning electron microscope (BSE‐SEM) images. Abstract This study focuses on hydraulic fracturing experiments conducted under triaxial conditions on tight sandstone specimens from Shivpuri district, Madhya Pradesh, India.
Pankaj Rawat, Narendra Kumar Samadhiya
wiley +1 more source
Selection the optimal parameters of drilling and blasting operations at the open pit of stone coal 'Progorelica' - Baljevac [PDF]
Mining and Metallurgy Engineering Bor, 2016 Blasting is an integral part of excavation in the field 'Progorelica'. The quality of blasted material depends on proper selection of drilling and blasting operations, why the arrangement of boreholes and quantity of explosives need to be determined so ...
Cvetković Vladan +2 more
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Deep Underground Science and Engineering, EarlyView.This study investigates the blast‐induced rock damage patterns under different cut‐hole layouts and ground stress conditions through numerical simulations and field tests. The findings in this study provide valuable insights for similar underground engineering applications.
Junjie Zhao +5 more
wiley +1 more source