Results 71 to 80 of about 136,634 (354)
Deep Underground Science and Engineering, EarlyView.A lithology identification while drilling method was developed, integrating an automated cuttings sampling system, a smart drilling rig, and an ensemble learning model. Underground trials achieved 97.42% accuracy in real‐time identification of cuttings lithology and composition, enhancing hazard management and supporting unmanned drilling technology in
Kun Li +7 more
wiley +1 more source
Revista Ambiente & Água, 2015 This study evaluated the hydrogeochemical attributes and quality of groundwater resources in Ngbo, Ohaukwu Area Council of Ebonyi State, Nigeria in order to determine whether boreholes in the area were suitable for potable uses.
Omaka Ndukaku Omaka +2 more
doaj +1 more source
Deformation Characteristics of Tianjiaba Landslide Induced by Surcharge
ISPRS International Journal of Geo-Information, 2021 The Tianjiaba landslide on the Hang Rui expressway was located in the south of Sinan County, Tongren City, Guizhou Province. From the night of 2 July to the morning of 3 July 2011, numerous house cracks, foundation subsidence, and surface cracks suddenly
Longju Zhang +4 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang +5 more
wiley +1 more source
The possibilities of heat pumps utilisation for family houses and flats fumigation [PDF]
Acta Montanistica Slovaca, 2006 Heat pumps (HPs) with the help of electricity use a renewable energy source to supply heat for homes or industrial buildings and to heat tap water. HP is a heating unit that will provide us with heat for our home for some 20 to 30 years to come and has a
Ján Pinka, Beáta Jágerová
doaj
Construction and Geotechnics, 2021 The study contains the problem of the borehole shape of during drilling. Usage of a drilling bit and tubular or screw rods is traditional and most common drilling methods. The requirement of "verticality" for boreholes in the drilling process is necessary to comply with design solutions and design schemes. At the same time, the actual implementation of
R. V Melnikov, Y. A Pronozin
openaire +2 more sources
Deep Underground Science and Engineering, EarlyView.Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei +4 more
wiley +1 more source
Measurement of representative landfill gas migration samples at landfill perimeters: a case study [PDF]
, 2009 This paper describes the development of a fully integrated autonomous system based on existing infrared sensing technology capable of monitoring landfill gas migration (specifically carbon dioxide and methane) at landfill sites.
Beirne, Stephen +3 more
core
Effects of unequal borehole spacing on the required borehole length
, 2014 Bernier, Michel, Cimmino, Massimo
core +2 more sources
Deep Underground Science and Engineering, EarlyView.A novel shear‐lag model, validated by pull‐out tests, incorporates a constant bond stress stage to predict the complete load–displacement response of grouted rock bolts, providing a new tool for optimizing anchorage length and material toughness in deep underground engineering. Abstract The stability of rock masses in deep underground excavations, such
Wenhui Bian +6 more
wiley +1 more source