Results 51 to 60 of about 237,953 (402)

Optimization of cut‐hole layout under high in situ stress based on numerical simulation and field tests

open access: yesDeep 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

Dependence Models of Borehole Expansion on Explosive Charge in Spherical Cavity Blasting

open access: yesGeosciences, 2019
In geotechnical practice, it is often necessary to improve the properties of soil and rock in which different structures are built. For this purpose, spherical cavity blasting can be applied to expand the borehole.
Denis Težak   +2 more
doaj   +1 more source

A new analytical heat transfer model for deep borehole heat exchangers with coaxial tubes

open access: yesInternational Journal of Heat and Mass Transfer, 2019
Deep borehole heat exchangers (DBHE) provide an effective solution for ground coupled heat pump (GCHP) systems in cold climate region where heating is dominant.
Aiqiang Pan, Lin Lu, P. Cui, Linrui Jia
semanticscholar   +1 more source

Sub-hourly simulation of residential ground coupled heat pump systems [PDF]

open access: yes, 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, Michel, Kummert, Michael
core   +2 more sources

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

open access: yesDeep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza   +3 more
wiley   +1 more source

Local mineral dust transported by varying wind intensities forms the main substrate for loess in Kashmir [PDF]

open access: yesEiszeitalter und Gegenwart, 2021
C. Zeeden   +6 more
doaj   +1 more source

Mathematical modelling of thermal and flow processes in vertical ground heat exchangers

open access: yesChemical and Process Engineering, 2017
The main task of mathematical modelling of thermal and flow processes in vertical ground heat exchanger (BHE-Borehole Heat Exchanger) is to determine the unit of borehole depth heat flux obtainable or transferred during the operation of the installation.
Pater Sebastian   +1 more
doaj   +1 more source

New Geothermal Prospect in North-Eastern Morocco [PDF]

open access: yes, 2010
Geothermal data has been indicating promising potentialities in the north-eastern Morocco. This paperpresents new temperature data, recently recorded in water borehole located in the Berkane and Oujda areas.
Barkaoui, Alae Eddine   +7 more
core  

A review on rockburst prediction and prevention to shape an ontology‐based framework for better decision‐making for underground excavations

open access: yesDeep Underground Science and Engineering, EarlyView.
A scientometric analysis of 2449 journal articles and a comprehensive review of 336 papers were conducted, discussing and identifying challenges and research gaps in rockburst prediction and prevention and proposing an ontology‐based framework for better decision‐making in underground excavations. Abstract With underground engineering projects becoming
Hongchuan Yan   +6 more
wiley   +1 more source

UNICEF IWASH Project, Northern Region, Ghana : an adapted training manual for groundwater development [PDF]

open access: yes, 2011
This report is an adapted training manual, with specific best practice recommendations for groundwater development practitioners working in the Northern Region, Ghana.
Beamish, D.   +3 more
core  

Home - About - Disclaimer - Privacy