Zobrazeno 1 - 10
of 896
pro vyhledávání: '"Rock fragmentation"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-22 (2024)
Abstract The mechanical rock-crushing efficiency is directly influenced by rock properties and joint structure. Tipped-hob is widely used in the construction of shafts. By analyzing the motion of tipped-hob and the mechanical properties of granite an
Externí odkaz:
https://doaj.org/article/d96dce6a5b034ed082f483a857821417
Publikováno v:
Journal of Rock Mechanics and Geotechnical Engineering, Vol 16, Iss 8, Pp 2879-2893 (2024)
Spontaneous combustion of coal increases the temperature in adjoining overburden strata of coal seams and poses a challenge when loading blastholes. This condition, known as hot-hole blasting, is dangerous due to the increased possibility of prematur
Externí odkaz:
https://doaj.org/article/d6a823bee640454895bd5de3f9d864c1
Publikováno v:
工程科学学报, Vol 46, Iss 6, Pp 973-981 (2024)
The degree of crushing blocks during open-air blasting is the primary measurement standard for comprehensive costs such as drilling, shoveling, transportation, and follow-up processes. Powder factor is the primary influencing factor and is typically
Externí odkaz:
https://doaj.org/article/311975579fa148ee80191b7d4e9fd169
Publikováno v:
Shuiwen dizhi gongcheng dizhi, Vol 51, Iss 3, Pp 171-179 (2024)
Mining-induced landslides are a common form of disaster in the mountainous areas of coal mines. To clarify the deformation and failure patterns of such slopes under the mining action, the particle discrete element method was employed to simulate the
Externí odkaz:
https://doaj.org/article/29705afe892d4776a4717bff82412d03
Akademický článek
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Publikováno v:
Meitan kexue jishu, Vol 52, Iss 1, Pp 232-243 (2024)
In order to promote the technological development of ultrasonic vibration induced cracking of coal and rock masses, improving the efficiency of coalbed methane production and hard rock excavation in mines, it reviews the development history of ultras
Externí odkaz:
https://doaj.org/article/c6cc207be46842dcb1d8db8d5814f43f
Publikováno v:
International Journal of Mining Science and Technology, Vol 34, Iss 1, Pp 15-29 (2024)
Hydraulic-electric rock fragmentation (HERF) plays a significant role in improving the efficiency of high voltage pulse rock breaking. However, the underlying mechanism of HERF remains unclear. In this study, considering the heterogeneity of the rock
Externí odkaz:
https://doaj.org/article/11120ee5c88f47e0a05f8ea5442fb8c5
Publikováno v:
Sensors, Vol 24, Iss 23, p 7738 (2024)
The application of blasting in modern engineering construction is prized for its speed, efficiency, and cost-effectiveness. However, the resultant vibrations can have significant adverse effects on surrounding buildings and residents. The challenge o
Externí odkaz:
https://doaj.org/article/cef8b7ededd74851b31ae73a74f0f8b8
Publikováno v:
Applied Sciences, Vol 14, Iss 14, p 6372 (2024)
The effect of inter-ring delay time (IRDT) on rock fragmentation in the tunnel excavation blasting was studied at the Xinjiang Beizhan Iron Mine, China, to improve the rock fragmentation and optimize the blast design. Blasting tests were conducted wi
Externí odkaz:
https://doaj.org/article/8d5c1e2417d045e9974bdbc528069425
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 9, Iss 1, Pp 1-31 (2023)
Abstract Stemming is one of the main concerns in blast of rock engineering due to its impact on explosion energy consumption and rock excavation performance. In this study, blast-induced rock fragmentation under different stemming conditions is numer
Externí odkaz:
https://doaj.org/article/73915cc1b7734e81b9455c4ae3269ceb