Results 61 to 70 of about 2,553 (189)
Geofluids, 2020 The roof of a large-section roadway will usually undergo progressive deformation and failure under the action of deep surrounding rock stress. The large-section rectangular roadway is more prone to sudden roof caving accident under the weakly cemented ...
Jiadi Yin, Baojie Fu, Hualei Zhang
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, 2004 In block caving mines, the gravity flow of caved (broken) ore controls the amount of valuable material recovered and the extent to which it is diluted by caved waste rock.
Halim, Adrianus,
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Advancing Cave Survey Methods: High‐Precision Mapping in Drakotrypa Cave, Greece
Archaeological ProspectionABSTRACT Cave floor mapping plays a vital role across various scientific disciplines by enabling the identification and interpretation of features shaped by both natural processes and human activity. In cave archaeology, floor mapping is crucial to decode and reconstruct human‐induced morphological features.
Christos Pennos +5 more
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, 2021 Slicing fully mechanized caving mining is a standard high-efficiency mining method for ultrathick coal seams. However, the effectiveness of gas control has accentuated the difficulty in fully mechanized top coal caving of low-permeability ultrathick coal
Wenshuai Li +4 more
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Research progress on intelligent coal caving theory and technology
Gong-kuang zidonghuaThe longwall top-coal caving technology is an effective method for extracting thick and ultra-thick coal seams, and it has become a hallmark technology in China's coal mining industry.
WANG Jiachen +4 more
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Behaviors of overlying strata in extra-thick coal seams using top-coal caving method
, 2016 Accidents such as support failure and excessive deformation of roadways due to drastic changes in strata behaviors are frequently reported when mining the extra-thick coal seams Nos.
Yu, Bin, Bin Yu
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Prediction of the height of caving zone above the undercut in block caving mining method
Rock Mechanics LettersThe block caving is one of the most commonly used methods in underground mining of massive, low/high grades, and deep deposits. As a result of undercutting, caving occurs and propagates toward the upper part of the ore block. It is essential to predict the height of caved ore and its volume based on shape of the caved zone to make an economic decision.
Behnam Alipenhani +3 more
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Meitan xuebaoA large range of caving roof of gob-side entry retaining is easy to cause impact damage of the roadside backfill body. In order to ensure the stability of gob-side entry retaining, different from the traditional large-angle inclined roof cutting method ...
Guorui FENG +6 more
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A systems approach to understanding block caving geomechanics
, 2015 Block caving is an underground mining method of great importance to the future extraction of suitable, large, low-grade deposits due to high production rate potential and low operating cost.
Tibbett, James
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