Results 61 to 70 of about 49,627 (206)
Theoretical and numerical simulation investigation of deep hole dispersed charge cut blasting
International Journal of Coal Science & Technology, 2023 Drilling and blasting methods have been used as a common driving technique for shallow-hole driving and blasting in rock roadways. With the advent of digital electronic detonators and the need for increased production efficiency, the traditional blasting
Chengxiao Li +5 more
doaj +1 more source
Influence of vibrations on structures [PDF]
, 2018 One type of occasional structural load is a seismic load. Earthquakes and blasts are typical sources of vibrations, but vibration generated during urban tunnel construction can represent a significant problem.
Kaláb, Zdeněk
core
A Brief History of the Development of Blasting and the Modern Theory of Rock Breaking [PDF]
, 2016 The article is devoted to the task today to improve the effectiveness of blasting during construction of horizontal and inclined mine excavations. Construction of new and reconstruction of existing mines requires large volume of excavation works, which ...
Kirsanov, A. K. (A) +2 more
core +2 more sources
Controlling Mechanism of Rock Burst by CO2 Fracturing Blasting Based on Rock Burst System
Shock and Vibration, 2020 Rock burst induced by mining is one of the most serious dynamic disasters in the process of coal mining. The mechanism of a rock burst is similar to that of a natural earthquake.
Tianwei Lan +4 more
doaj +1 more source
Blast vibration monitoring in opencast mines [PDF]
, 2014 In this report the blast vibration monitoring techniques is studied. Ground vibration induced by blasting practices in mines has become a serious environmental issue in today’s scenario.
Choudhary, S S K, Ranjan, Ravi
core
Applied SciencesBurst morphology is a crucial indicator for evaluating the effectiveness of blasting, as it directly reflects the actual state of the blasting results.
Guoqiang Wang, Hui Chen, Jingkun Zhao
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Scientific ReportsThe sand-mud interbedded surrounding rock contains discontinuities, such as horizontal bedding, joints, weak planes and weak interlayers. Drilling and blasting construction in this kind of surrounding rock is very likely to cause very serious over-/under-
LongHao Ma +5 more
doaj +1 more source
Extension of Gutenberg-Richter Distribution to Mw -1.3, No Lower Limit in Sight [PDF]
, 2009 With twelve years of seismic data from TauTona Gold Mine, South Africa, we show that mining-induced earthquakes follow the Gutenberg-Richter relation with no scale break down to the completeness level of the catalog, at moment magnitude MW −1.3.
Boettcher, Margaret S +2 more
core +3 more sources
Applied SciencesRock fragmentation is a key indicator for evaluating the effects of rock blasting and directly impacts subsequent excavation efficiency. However, predicting rock fragmentation outcomes is challenging due to the complex physical and chemical processes ...
Qing Yang +6 more
doaj +1 more source