Results 31 to 40 of about 332,876 (331)

Applied scientific and systemic problems of the related ore-dressing plants interaction in the event of decommissioning the massif that separates their quarries [PDF]

, 2020
Purpose. Determining the possible and substantiating expedient alternate design and engineering decisions regarding the stage of spacial union of the adjacent quarries belonging to various owners by mining the rock pillar between the No. 3 quarry of PJSC
Azarian, Volodymyr, Lutsenko, Serhii, Skachkov, Andrii, Titov, Danylo, Zaiarskyi, Ruslan, Zhukov, Serhii   +5 more
core   +1 more source

Composition and Characteristics of Rock Vibration Generated in Blasting Excavation of Deep Tunnels

Frontiers in Earth Science, 2022
During blasting excavation in deep rock masses, the in situ stress initially exerted on blast-created free surfaces is rapidly released along with rock cracking by blasting.
Jianhua Yang, Jianhua Yang, Jianhua Yang, Jinshan Sun, Jinshan Sun, Yongsheng Jia, Yongsheng Jia, Yingkang Yao, Yingkang Yao, Weipeng Zhang, Tiejun Tao   +10 more
doaj   +1 more source

Blast Injury [PDF]

Military Medicine, 2011
Explosions can cause devastating injuries by various wounding mechanisms. Injuries due to the primary pressure wave are rarely life threatening and those that are lethal are uncommon. We reviewed the pathophysiology of blast-related injuries and their implications for management.
openaire   +2 more sources

Improving rock classification in terms of explosivity [PDF]

, 2019
Purpose. To improve rock classification in terms of explosivity relying upon the detailed analysis of characteristics of rating classifications available in the Russian Federation and in the world. Methods.
Kirsanov, A, Kurchin, G, Lobatsevich, M, Trebush, Yu, Vokhmin, S, Zaitseva, E   +5 more
core   +1 more source

Intensification of technological processes in drilling and blasting operations during open-cut mining in Kyzylkum region [PDF]

, 2018
Purpose. It is found that for long term standing, the pit bench profile is close to the boundary of the disturbed zone. Therefore, long stability of the bench can be estimated in respect to the size of the disturbed area and the boundary of residual ...
Karimov, Sh, Ravshanova, M, Zairov, Sh
core   +1 more source

Experimental study of rock fragmentation under different stemming conditions in model blasting

International Journal of Rock Mechanics And Mining Sciences, 2021
Nine blasts with cylindrical granite specimens were carried out under different stemming conditions. All rock specimens had a diameter of 240 mm and a length of 300 mm.
Zong-Xian Zhang, Y. Qiao, L. Chi, De-Feng Hou   +3 more
semanticscholar   +1 more source

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

Frontiers 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, Han Li, Zirui Yin, Zirui Yin, Zhijiang Zuo, Zhijiang Zuo, Libo Pan, Libo Pan, Junfeng Zhang   +8 more
doaj   +1 more source

Predicting ground vibration during rock blasting using relevance vector machine improved with dual kernels and metaheuristic algorithms

Scientific Reports
The ground vibration caused by rock blasting is an extremely hazardous outcome of the blasting operation. Blasting activity has detrimental effects on both the ecology and the human population living in proximity to the area.
Yewuhalashet Fissha, Jitendra Khatti, H. Ikeda, K. Grover, Narihiro Owada, H. Toriya, Tsuyoshi Adachi, Youhei Kawamura   +7 more
semanticscholar   +1 more source

Crushing Law of Rocks in the Area Near Blasting Source under Ultra-High Pressure

Gaoya wuli xuebao
Addressing the engineering challenge where excessive rock fragmentation in the area near blasting source leads to over 50% energy loss of explosives, this study conducts an in-depth experimental investigation into the mechanism of rock over-fragmentation
Jianian HU, Shi FANG, Haotian ZHANG, Xiang CHEN, Gang YANG, Qian DONG, Yuxiang DU, Yongsheng JIA   +7 more
doaj   +1 more source

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
core   +1 more source