Results 71 to 80 of about 49,627 (206)
On loader productivity, rock strength and explosive energy in metal mining [PDF]
, 2011 Twenty production blasts in two open pit mines were monitored, in rocks with medium to very high strength. Three different blasting agents (ANFO, watergel and emulsion blend) were used, with powder factors ranging between 0.88 and 1.45 kg/m3.
López Sánchez, Lina María +2 more
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Rock Mechanics BulletinBlasting is widely used in hard rock tunnel excavation but often deteriorates the mechanical properties of the rock mass, forming a disturbance zone associated with energy evolution in the surrounding rock.
Sheng Luo +6 more
doaj +1 more source
European Journal of Remote Sensing, 2020 China has entered a high-speed construction period on hydropower engineering since the late 20th century. Blasting is the major way for rock excavation on large projects, especially for ultra-high steep rock slope.
Ke Deng, Ming Chen
doaj +1 more source
Quarry fines minimisation : can we really have 10mm aggregate with no fines? [PDF]
, 2008 In 2005, 216 million tonnes of saleable aggregate was produced in the UK; a corresponding 55 million tonnes of quarry fines and 24 million tonnes of quarry waste were also produced.
Mitchell, Clive John +2 more
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工程科学学报Blasting is a process in which the chemical energy of explosives is rapidly released, causing strong impact on the rock mass and achieving efficient rock fragmentation.
Renshu YANG +6 more
doaj +1 more source
A Method for Making Transparent Hard Rock-Like Material and Its Application
Advances in Materials Science and Engineering, 2019 At present, a similar material most commonly used in the similarity model experiment of rock blasting is cement mortar. However, it is not transparent, which leads to the problem that the cracks in the model made of cement mortar after the test cannot be
Jinjin Ge, Ying Xu
doaj +1 more source
LEACHING OF URANIUM DEPOSITS IN MONGOLIA [PDF]
, 2018 The paper outlines the results of field, laboratory, and theoretical studies on geotechnical parameters of uranium in-situ leaching (ISL) for hydrogenous deposits located in eastern Mongolia.
KHOMENKO, Oleh +5 more
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Scientific ReportsThe geological phenomenon of igneous rock invading coal seam is widely distributed, which induces mining risk and affects efficient mining. The pre-splitting blasting method of igneous rock is feasible but difficult to implement accurately, resulting in ...
Hongbin Zhao +5 more
doaj +1 more source
Alexandria Engineering JournalBy integrating an established rock damage model into the LS-DYNA computer code and using a widely used method for equivalently simulating multiple blastholes detonation, the damage processes of surrounding rock with different properties under the bench ...
Ling Ji +5 more
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Increasing ecological safety during underground mining of iron-ore deposits [PDF]
, 2018 Purpose. To create the technology increasing the level of ecological safety of underground mining of iron ores by means of decreasing the number of harmful substances released into the atmosphere. Methodology. Laboratory and industrial research studies
Khomenko, O.Ye +3 more
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