Results 71 to 80 of about 34,203 (251)
Non-destructive testing of rock bolt fastening as an element of monitoring the state of mine workings [PDF]
, 2019 Purpose. To substantiate the informative parameter, to develop the method and equipment for non-destructive testing (NDT) of rock bolt fastening, as an element of geomechanical monitoring of the mine workings state. Methods.
Krasovskyi, I +3 more
core +1 more source
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
Methods and standards development for three-dimensional mapping of the Antioch Quadrangle, Lake County, Illinois a pilot study [PDF]
, 2005 The Pilot Study for the Central Great Lakes Geologic Mapping Coalition (CGLGMC) focused on the Antioch Quadrangle, Lake County, Illinois developing a series of maps and digital products, several protocols for database development and maintenance and ...
Barnhardt, Michael L., Berg, Richard C.
core
Study of Methods and Development of Technological Scheme for Heat Removal from Rock Waste Dump [PDF]
, 2017 The aim of this paper is to study the methods and develop technological scheme for thermal energy removal from coal mine rock waste dumps. The prospects of renewable energy sources development in Ukraine are analyzed.
Saik, Pavlo
core +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
Research on Wellbore Collapse of Stratification Formation
Shiyou jixie, 2019 The development micro-fractures, joints and bedding in the middle and deep strata of the Bohai Oilfield makes the collapse pressure predicted using conventional integrate formation not consistent with actual situation.
Zhang Lei +4 more
doaj
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
Impact of rock strength degradation by fluid intrusion on borehole stability in shale
Natural Gas Industry BThe interaction between shale bedding planes and fluids significantly weakens their structural integrity, profoundly affecting borehole stability in shale reservoirs. However, traditional analyses often overlook fluid intrusion from the borehole into the
Heyuan Wang +5 more
doaj +1 more source
A double continuum hydrological model for glacier applications [PDF]
, 2014 Peer reviewedPublisher ...
de Fleurian, B. +6 more
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