Results 51 to 60 of about 136,634 (354)

3D DAS VSP for Coal Seam Exploration: A Case Study from Queensland, Australia

Sensors
Seismic methods are extensively used in coal mining for expanding resource discoveries and definition as well as for mine monitoring. However, the use of borehole seismic methods is relatively uncommon due to the high cost of borehole seismic acquisition
Konstantin Tertyshnikov, Alexey Yurikov, Andrej Bona, Milovan Urosevic, Roman Pevzner   +4 more
doaj   +1 more source

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

Deep 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, Hendrik Grobler, Moshood Onifade, Manoj Khandelwal   +3 more
wiley   +1 more source

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

Eiszeitalter und Gegenwart, 2021
C. Zeeden, J. A. Mir, M. Vinnepand, C. Laag, C. Laag, C. Rolf, R. A. Dar   +6 more
doaj   +1 more source

In-situ measurement of rock permeability based on pneumatic tests in boreholes

Yantu gongcheng xuebao, 2017
The in-situ measurement formula for rock permeability is derived based on the theory of steady gas seepage. A rough judgement method for Darcy seepage in engineering is given based on the Pavlovsky’s Reynolds number formula.
CAO Yuan , NIU Guan-yi , WANG Tie-liang
doaj   +1 more source

Investigation of Time-Lapse Changes with DAS Borehole Data at the Brady Geothermal Field Using Deconvolution Interferometry

Remote Sensing, 2022
Distributed acoustic sensing (DAS) has great potential for monitoring natural-resource reservoirs and borehole conditions. However, the large volume of data and complicated wavefield add challenges to processing and interpretation.
Hilary Chang, Nori Nakata
doaj   +1 more source

Temperature measured in borehole BK-2

, 2015
Temperature measured in borehole BK-
Mikhail N Grigoriev (6965933), Günther, Frank, Lutz Schirrmeister (6961397), Hubberten, Hans-Wolfgang, Pier Paul Overduin (6965936), Wetterich, Sebastian, Schirrmeister, Lutz, Grigoriev, Mikhail N, Liebner, Susanne, Knoblauch, Christian, Frank Günther (6976145), Hans-Wolfgang Hubberten (6959312), Overduin, Pier Paul, Susanne Liebner (7523795), Christian Knoblauch (6886310), Sebastian Wetterich (6961394)   +15 more
core   +1 more source

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

Deep 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, Haijiang Li, Hongqiang Xie, Mingli Xiao, Jianliang Pei, Huaizhong Liu, Jiangda He   +6 more
wiley   +1 more source

Using sectional blasting to improve the efficiency of making cut cavities in underground mine workings

Frontiers in Earth Science
Introduction: The research concerns how making cut cavities improves drilling and blasting operations as well as the optimum parameters to arrange both snubber and auxiliary blastholes.Methods: The research methods include experimental and industrial ...
Vasyl Lozynskyi, Vasyl Lozynskyi, Khalidilla Yussupov, Kanay Rysbekov, Serikbay Rustemov, Oleg Bazaluk   +5 more
doaj   +1 more source

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

International 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

Borehole Plugging Program [PDF]

, 1978
Activities are reported in programs to locate, test, and select materials for borehole plugs near nuclear waste repositories. Background information concerning borehole plugging is presented and work to date is summarized.

core   +1 more source