Results 11 to 20 of about 41,022 (244)

Method for calculation of drilling-and-blasting operations parameters for emulsion explosives [PDF]

, 2019
Purpose. Development of a new method for calculation of drilling-and-blasting operations parameters during underground mining with application of emulsion explosives taking into account their energy characteristics as well as physical and mechanical ...
Khomenko, O, Kononenko, M, Kovalenko, I, Savchenko, M   +3 more
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Hydro and geomechanical stability assessment of the bund wall bottom slope of the Dniprovsk tailing dump [PDF]

, 2018
Purpose. The objective is to assess the stability of bund wall components of a hydro-technical structure under the conditions of a tailing dump which hydrodynamic mode has been disrupted during operation.
Soroka, Yu, Tishkov, V, Tymoshchuk, V
core   +1 more source

Effect of Water-Decked Blasting on Rock Fragmentation Energy

Shock and Vibration, 2020
Fragmentation energy ratio is an important index to evaluate whether an explosive is used efficiently. This paper discusses the effect of water-decked blasting on fragmentation energy based on theory and numerical simulation, and three blasting tests ...
Wenjun Xia, Wenbo Lu, Ruize Li, Ming Chen, Zhen Lei   +4 more
doaj   +1 more source

Coastal cliff ground motions and response to extreme storm waves [PDF]

, 2015
Coastal cliff erosion from storm waves is observed worldwide, but the processes are notoriously difficult to measure during extreme storm wave conditions when most erosion normally occurs, limiting our understanding of cliff processes.
Adam P. Young, Adams, Adams, Alexander, Brain, Claire S. Earlie, Crawford, Dickson, Earlie, Gerd Masselink, Gutenberg, Komar, Lague, Leveridge, Longuet-Higgins, Masselink, Paul E. Russell, Ramirez, Ridgewell, Rodgers, Scott, Tillotson, Webb, Young, Young, Young, Zopf   +26 more
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Fluid-solid Coupling Analysis on Gas Path of Laser-mechanical Combined Rock Breaking Drilling Tool

Shiyou jixie, 2021
In order to meet the current drilling needs of complex deep strata, combined with the rapid and extensive development of commercial laser technology and the trend of its integration with the energy development industry, this article carried out the ...
Zuo Yongqiang, Hui Kunliang, Yi Chang, Yan Jing, Wu Xiaoxiong, Wang Degui, Wang Qianmin   +6 more
doaj  

Numerical simulations of dynamic rock damage under laser-induced shock waves

Meitian dizhi yu kantan
ObjectiveTraditional laser thermal rock breaking technologies suffer from high energy consumption and a limited damage depth. To overcome these challenges, this study proposed a novel mechanical rock breaking method based on high-pressure plasma shock ...
Yuelin XU, Enwei QIN, Wei LI, Ying WANG
doaj   +1 more source

Rampant Arch and Its Optimum Geometrical Generation [PDF]

, 2019
Gothic art was developed in western Europe from the second half of the 12th century to the end of the 15th century. The most characteristic Gothic building is the cathedral.
Alcayde García, Alfredo, Gil Montoya, Francisco, Manzano Agugliaro, Francisco, San Antonio Gomez, Jose Carlos de, Velilla Lucini, Cristina, Zavala Morencos, Ignacio de   +5 more
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Progress and trends in non-tool rock breaking theory and technology

Meitan xuebao
With the gradual implementation of China’s deep-earth engineering strategy, deep resource extraction and underground space construction have brought in some new opportunities, but they also face many challenges, with extreme geological conditions such as
Jianping WEI, Yubo CAI, Yong LIU, Dayang YU, Yi HUANG, Xing LI, Mengya GAO   +6 more
doaj   +1 more source

Weighing the Neutrino

, 2013
We investigate the potential of short-baseline experiments in order to measure the dispersion relation of the (muon) neutrino, with a prospect of eventually measuring the neutrino mass. As a byproduct, the experiment would help to constrain parameters of
Horvath, D., Jentschura, U. D., Nagy, S., Nandori, I., Trocsanyi, Z., Ujvari, B.   +5 more
core   +1 more source

Sub-nanometre resolution of atomic motion during electronic excitation in phase-change materials

, 2016
Phase-change materials based on Ge-Sb-Te alloys are widely used in industrial applications such as nonvolatile memories, but reaction pathways for crystalline-to-amorphous phase-change on picosecond timescales remain unknown. Femtosecond laser excitation
Bragaglia, Valeria, Brewe, Dale, Calarco, Raffaella, Fons, Paul, Giussani, Alessandro, Hase, Muneaki, Katayama, Tetsuo, Kolobov, Alexander V., Makino, Kotaro, Mitrofanov, Kirill V., Ogawa, Kanade, Riechert, Henning, Sato, Takahiro, Shimada, Toru, Terashima, Ryo, Togashi, Tadashi, Tominaga, Junji, Wall, Simon, Yabashi, Makina   +18 more
core   +1 more source