Results 31 to 40 of about 143,227 (288)

Development of natural underground ore mining technologies in energy distributed massifs [PDF]

, 2019
The object of research is the technology and facilities for underground mining of ores in the disrupted massifs. One of the most problematic places is the formation of man-made voids; which influence the occurrence and redistribution of stress-strain ...
Golik, V., Khomenko, O., Lyashenko, V., Topolny, F.   +3 more
core   +4 more sources

Study and Application of Rock Breaking Mechanism of Concentrated Water Hydraulic Smooth Blasting in Broken Sand-Stone Geological Conditions

Shock and Vibration, 2022
The use of polyenergy water pressure controlled blasting technology in tunnel construction is gradually being promoted, and the technology is often used in hard rock, and the mechanism of rock breaking in fractured sandstone strata is still lacking ...
Qingbiao Wang, Xu Zhang, Bin Gong, Zhenyue Shi, Yuanyuan Tian, Dong Wang, Zhongjing Hu, Weiliang Sun, Zhonghui Li, Wenxi Zhang   +9 more
doaj   +1 more source

A fractal fragmentation model for rockfalls [PDF]

, 2017
The final publication is available at Springer via http://dx.doi.org/10.1007/s10346-016-0773-8The impact-induced rock mass fragmentation in a rockfall is analyzed by comparing the in situ block size distribution (IBSD) of the rock mass detached from the ...
Corominas Dulcet, Jordi, Mavrouli, Olga Christina, Ruiz Carulla, Roger   +2 more
core   +2 more sources

Rock-Breaking Mechanism of Special-shaped PDC Cutter in Heterogeneous Granite

Shiyou jixie, 2022
In order to clarify the rock-breaking mechanism of special-shaped PDC cutter in the difficult-to-drill formations(e.g. granite), the finite element method was used to establish a mesoscopic heterogeneous granite model with different mineral components ...
Liu Hexing, Luo Yunxu, Liu Weiji, Ma Chuanhua, Wu Yanhui, Zhu Xiaohua, Liu Yaya   +6 more
doaj  

Exceptional aggressiveness of cerebral cavernous malformation disease associated with PDCD10 mutations. [PDF]

, 2015
PurposeThe phenotypic manifestations of cerebral cavernous malformation disease caused by rare PDCD10 mutations have not been systematically examined, and a mechanistic link to Rho kinase-mediated hyperpermeability, a potential therapeutic target, has ...
Akers, Amy L, Austin, Cecilia, Awad, Issam A, De Souza, Jorge Marcondes, Gallione, Carol J, Gunel, Murat, Lee, Connie, Marchuk, Douglas A, McDonald, David A, Mikati, Abdul Ghani, Min, Wang, Rebeiz, Tania, Rorrer, Autumn, Shenkar, Robert, Shi, Changbin, Stockton, Rebecca A, Zhang, Lingjiao   +16 more
core   +2 more sources

Numerical Simulation Study on Rock Breaking Characteristics of Prismatic PDC Cutter under Triaxial Stress

Shiyou jixie, 2021
The research on rock breaking mechanism of special-shaped non-planar PDC cutter is relatively scarce, and the research on domestic prismatic PDC cutter is even scarcer.
Wei Xiuyan, He Wenhao, Shi Huaizhong, Chen Zhenliang, Xiong Chao, Li Shuowen   +5 more
doaj  

Numerical Simulations and Experiments on Single-Tooth Rock-Breaking

Machines, 2022
The rock-breaking efficiency of a drilling tool directly affects the production costs and progress of foundation construction. It is essential to understand the mechanism of mechanical rock-breaking to improve rock-breaking efficiency.
Heyuqiu Li, Jie Wang, Qi Mei, Kunlan Huang, Qingyi Luo, Jie Dong   +5 more
doaj   +1 more source

Universal avalanche statistics and triggering close to failure in a mean field model of rheological fracture

, 2018
The hypothesis of critical failure relates the presence of an ultimate stability point in the structural constitutive equation of materials to a divergence of characteristic scales in the microscopic dynamics responsible for deformation. Avalanche models
Baró, Jordi, Davidsen, Jörn
core   +1 more source

The Modelling of Rock Fragmentation Mechanisms by Carbide Buttons Using the 3D Discrete Element Method

Applied Sciences, 2023
Button cutters are commonly used in hard rock drilling because the inserted carbide buttons provide exceptional wear resistance, impact resistance, and high strength in challenging geological formations.
Yanan Ma, Qiuming Gong, Xiaoxiong Zhou, Lijun Yin, Hongsu Ma   +4 more
doaj   +1 more source

A modern vision of simulation modelling in mining and near mining activity [PDF]

, 2018
The paper represents the creation of the software simulation system, which reproduce the basic processes of mining and near production. It presents the consideration of such systems for both traditional and non-traditional
Cabana, Edgar, Dychkovskyi, Roman, Falshtynskyi, Volodymyr, Kosobokov, Oleksandr, Ruskykh, Vladyslav, Дичковський, Р. О., Дичковський, Роман Омелянович, Дычковский, Р. Е., Дычковский, Роман Емальянович, Фальштинский, В. С., Фальштинский, Владимир Сергеевич, Фальштинський, В. С., Фальштинський, Володимир Сергійович   +12 more
core   +1 more source