Results 11 to 20 of about 84,349 (231)
Caikuang yu Anquan Gongcheng Xuebao, 2013 In this paper, in order to improve the present methods of rock blastability classification, a prediction model of game theory-matter-element extension for blastability classification was established. Firstly, based on the analysis of main causes of blastbility, three indexes were chosen as the evaluation indicators and the classification standards were
Shang, Jun Long +4 more
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Blastability of rocks under permafrost conditions [PDF]
Hydrotechnical Construction, 1980 1. For normal working of the bottom the linear dimensions of the borehole grid in frozen rocks should be reduced 13% and the explosive ratio increased 28% compared to the same rocks in a normal (thawed) state. 2. When reissuing the standards the tables of explosive consumption should be supple-mented by the explosive ratios for frozen ...
V. G. Bertsov +2 more
core +12 more sources
Rock mass blastability dependence on rock mass quality. [PDF]
Bulletin of the Geological Society of Greece, 2013 The present paper tries to investigate the influence of rock mass quality characteristics on blasting results. In order to come to some conclusions, blastability and quality of rock mass were put together using the already known classification systems. Taking into account the quantity of blastability index (BI) for every possible structural appearance ...
Chatziangelou, M., Christaras, B.
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EMPIRICAL METHOD OF ASSESSING ROCK MASS BLASTABILITY.
, 1986 A method of assessing the blastability of a rock mass is presented which makes use of five, readily available, simple parameters. These are the rock mass description, joint plane spacing, joint plane orientation, specific gravity influence and hardness.
Lilly Peter A.
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Evaluation Method and Application of Multi-index Rock Mass Blastability Based on Normal Cloud Model
Abstract Explosive rock breaking is the main rock breaking method in geotechnical engineering. The difficulty degree of blasting in different rock conditions is different, corresponding to different rock blastability levels. In order to improve the accuracy of rock mass blastability classification, it can be used to guide the blasting ...
Kui-kui HOU +5 more
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The characterisation and analysis of in-situ and blasted block-size distributions and the blastability of rock masses. [PDF]
, 1997 PhDIn this thesis, previous research on discontinuity geometry, in-situ block size distribution (IBSD), blasted block size distribution (BBSD), and blastability of rock mass is discussed.
Lu, Ping
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Blastability and Ore Grade Assessment from Drill Monitoring for Open Pit Applications [PDF]
Rock Mechanics and Rock Engineering, 2021 Abstract Blasting performance is influenced by mechanical and structural properties of the rock, on one side, and blast design parameters on the other. This paper describes a new methodology to assess rock mass quality from drill-monitoring data to guide blasting in open pit operations.
Juan Navarro +7 more
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Blastability Quality System (BQS) for using it, in bedrock excavation
Structural Engineering and Mechanics, 2014 Success in the excavation of foundations is commonly known as being very important in asserting stability. Furthermore, when the subjected formation is rocky and the use of explores is required, the demands of successful blasting are multiplied. The quick and correct estimation of xcavation\'s characteristics may help the design of building structures,
Christaras, Vasileios, Chatziangelou, M.
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Results in EngineeringThe specific charge has been given as a function of the blastability index (BI) only in previous research, whereas fragment size is one of the attractive blasting results. The impacts of combination of the important factors such as fragment size, in-situ
Hassan Moomivand +3 more
doaj +1 more source
The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source