Visualization test and numerical simulations of 2D blasting crack propagation
Drilling and blasting, characterized by their efficiency, ubiquity, and cost-effectiveness, have emerged as predominant techniques in rock excavation; however, they are accompanied by enormous destructive power. Accurately controlling the blasting energy
Shan Guo, Manchao He, Seokwon Jeon
doaj +1 more source
Evacuation of coal from hoppers/silos with low pressure pneumatic blasting systems [PDF]
The need for an efficient, economical, effective and quiet device for moving coal and other difficult bulk solids was recognized. Thus came the advent of the low pressure pneumatic blasting system - a very efficient means of using a small amount of plant
Fischer, J. S.
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Technology development of Kryvyi Rih iron ore open pits within zones stoping of underground mine working [PDF]
На современном этапе отработка залежей железных руд в Кривбассе ведется в условиях как совместных открытых и подземных горных работ, так и открытой разработки месторождений в зонах, подработанных подземными выработками.
Babets, Ye. K. +2 more
core
ObjectivesTo analyze the stability of surrounding rock during tunnel blasting excavation in horizontally layered rock masses under initial in-situ stress.MethodsUsing LS-DYNA finite element software, numerical models were established under three ...
Yu Jianxin +3 more
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Дослідження сегрегації для розробки техногенних покладів з метою вдосконалення якості продукції [PDF]
Виявлено теоретичне підґрунтя ефекту сегрегації при складуванні відходів збагачення з урахуванням високоякісного опису різних фракцій, проведені розрахунки щодо визначення основних параметрів технологічного процесу складування та подальшої ...
Kustov, V. +11 more
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English for Study and Work: Coursebook in 4 books. Book 2 Obtaining and Processing Information for Specific Purposes [PDF]
Подано всі види діяльності студентів з вивчення англійської мови, спрямовані на розвиток мовної поведінки, необхідної для ефективного спілкування в академічному та професійному середовищах.
Зуенок, И. И. +15 more
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Amazonian Hydrothermal Alteration Comparing Nakhlite Secondary Mineralogy to Water Rock Reaction Experiments [PDF]
We report on results from experiments with Mars analog materials under diagenetic conditions. The mineralogical results of our experiments suggest that an important type of fluid alteration in the Amazonian may be short duration (e.g.
Bridges, J. C. +14 more
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Damage Characteristics of Rock Mass Under Cutting Blasting in Sharp Inclined Narrow Vein Mines
In the drift mining of sharp, inclined, narrow veins, the efficacy of cutting blasting directly governs the efficiency of blasting operations. However, the mechanisms of rock mass damage and fracturing induced by cutting blasting in sharp inclined narrow
Shenggang Wu +5 more
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The rock mass fragmentation in discontinuous rock mass is a concern issue in rock mass blasting. The purpose of the study is to find out the influencing parameters of rock mass and blast design in degree of fragmentation of natural block during blasting.
Ajay Pratap Singh Tomar +3 more
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Discrete element models for rock blasting
This is rock blasting application of FDEM.
Munjiza, Ante, Owen, D. Roger J.
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