Results 41 to 50 of about 1,012,080 (297)
Geofluids, 2022 The advanced mining stress on a large working face can easily lead to the failure of the roof and coal mass; coal wall spalling and roof caving occur. The degree of coal wall failure and the depth of the plastic fracture zone are closely related to the ...
Baojie Fu +3 more
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Preconditioning optimization of hydraulic fracturing in block caving of hard rock mass
Frontiers in Earth Science, 2023 Introduction: Cavability issues often arise in hard rock mines employing the block caving mining method. Hydraulic fracturing stands out as a promising pre-conditioning technology for hard rock masses, with its pre-conditioning effects dependent on ...
Huang Min +4 more
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Optimising for success at the Grasberg Block Cave [PDF]
Proceedings of the Fourth International Symposium on Block and Sublevel Caving, 2018 At PT Freeport Indonesia’s Grasberg mining complex, the Grasberg open pit is scheduled to cease production in early 2019. Mining of the Grasberg deposit will then transition to the underlying Grasberg Block Cave (GBC) mine, with initial undercutting currently planned for late 2018. The GBC is projected to become the district’s flagship underground mine
Ryan Campbell +3 more
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Geosciences, 2022 This paper raises important questions about the way we approach numerical analysis in rock engineering design. The application of advanced numerical models is essential to adequately analyze and design different geotechnical aspects of pit-to-cave ...
Tia Shapka-Fels, Davide Elmo
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Investigation of surface subsidence due to sublevel caving
, 2010 Mining with a sublevel caving induces the progressive failure of the hangingwall and in minor proportion the failure of the footwall. Surface subsidence is a consequence of the large deformation experienced by the rock mass.
Nordlund, Erling, Villegas, Tomas
core +2 more sources
Applied SciencesBlock caving is a promising method for large-scale underground extraction of low-grade orebodies, but its application requires reliable prediction of ore rock caving and associated ground response.
Zhonghao Liang +3 more
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Energies, 2022 There are several massive deposits around the world with different geological characteristics. Thus, different mining methods and strategies are applied based on the particularity of each method and mine experience.
Krzysztof Skrzypkowski +4 more
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Digital Cognitive Phenotyping for Differential Diagnosis and Monitoring in Neurological Conditions
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To assess the utility, accessibility, and equivalence to supervised scales of online cognitive assessment in older individuals with cognitive impairment. Methods Patients with Alzheimer's disease (AD, n = 31), idiopathic normal pressure hydrocephalus (iNPH, n = 26), and traumatic brain injury (TBI, n = 23) completed online cognitive ...
Martina Del Giovane +10 more
wiley +1 more source
A Methodology to Model Caving Initiation Using DEM
Applied SciencesThe initiation of the caving process in block/panel caving is critical to the success of mines. However, there is no widely adopted methodology for modeling the onset of caving.
René Gómez +4 more
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Vine‐Inspired Soft Robotics: Materials, Actuations, and Emerging Applications
Advanced Science, EarlyView.Vine‐inspired robots grow from the tip, enabling navigation through confined spaces with minimal disturbance. This Review summarizes material and actuation strategies for vine‐inspired growth, key functions including steering, retraction, attachment, branching, and variable stiffness, and emerging applications spanning medical intervention, confined ...
Jiahao Wu +7 more
wiley +1 more source