Results 11 to 20 of about 36,742 (293)

The characterisation and analysis of in-situ and blasted block-size distributions and the blastability of rock masses. [PDF]

open access: yes, 1997
PhDIn this thesis, previous research on discontinuity geometry, in-situ block size distribution (IBSD), blasted block size distribution (BBSD), and blastability of rock mass is discussed.
Lu, Ping
core   +4 more sources

Dynamic Response of Twin Circular Unlined Tunnels Subjected to Blasting P Waves

open access: yesFrontiers in Earth Science, 2022
The dynamic response of twin circular unlined tunnels is studied by indirect boundary integral equation method (IBIEM). The twin tunnels are assumed to lie in an unbounded elastic space subjected to blasting P waves.
Shiwei Lu   +11 more
doaj   +1 more source

Research on Blasting Technology in Large Cross Section Roadway Heading in Hard Rock at Depth [PDF]

open access: yes, 2021
According to the high hardness rock in Xinji 2nd Mine, the problem of low utilization of blasthole, an undesirable effect of blasting, and low circulating footage in the roadway construction has arisen.
Hu, Kunlun; Anhui University of Science & Technology   +3 more
core   +1 more source

Improvment of safety conditions of unstable rock slopes through the use of explosives [PDF]

open access: yes, 2008
The paper discusses operations aimed at creating a safer natural or man made rock slope by artificially inducing the displacement of unstable elements by blasting.
M. Casale   +8 more
core   +2 more sources

Cryogel-Templated Fabrication of n-Al/PVDF Superhydrophobic Energetic Films with Exceptional Underwater Ignition Performance

open access: yesMolecules, 2022
The rapid heat loss and corrosion of nano-aluminum limits the energy performance of metastable intermolecular composites (MICs) in aquatic conditions. In this work, superhydrophobic n-Al/PVDF films were fabricated by the cryogel-templated method.
Jingwei Li   +5 more
doaj   +1 more source

Burden movement in confined drift wall blasting tests studied at the LKAB Kiruna SLC mine

open access: yes, 2012
Blasting in SLC (sublevel caving) takes place in a semi-confined situation. Blasted material swells while the caved material compacts, and also, to a lesser extent, fills parts of the void volume of the production drift.
Ouchterlony, Finn   +4 more
core   +3 more sources

Blast Crisis [PDF]

open access: yesJournal of Education and Teaching in Emergency Medicine, 2020
N ...
Kirwin, Margaret, Yee, Jennifer
openaire   +4 more sources

New progress and development of engineering blasting in China

open access: yes, 2010
Applications and results of blasting techniques in some major construction projects in China since 2004 are reviewed. In the construction of water conservancy and hydropower projects and ports, there are a number of different cofferdams blasting ...
Zhou JH, Wang, X.G., Liu DS, Wang XG
core   +2 more sources

Precision citrus segmentation and stem picking point localization using improved YOLOv8n-seg algorithm

open access: yesFrontiers in Plant Science
IntroductionDue to the small size of citrus stems, their color similarity to the background, and their variable position relative to the fruit, accurately locating picking points using robots in natural environments presents significant challenges ...
Han Li   +8 more
doaj   +1 more source

Inter-row delay time optimization and vibration control in blasting caving of insulating pillar based on the HJC constitutive model

open access: yes矿业科学学报
When using the blasting caving method to treat goaf, the collapsing ore and rock can cause shock disturbances to the roof of the lower stope, which may lead to stability risks.
FEI Honglu   +5 more
doaj   +1 more source

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