On the carbonation, chloride ingress and associated corrosion of steel reinforcement in concrete made with cement incorporating fly ash, ground granulated blast-furnace slag and ground limestone, complying with the European standard EN 197-1 (2011), the analysis and evaluation of global data have revealed some challenging facts about the ...
Vibravista provides low cost, ground breaking rack-based and distributed transmitter monitoring software and hardware solutions. API 670 vibration monitoring sensors and monitors focus on asset reliability, efficiency and extended life of machines. Machine failure is expensive. The impact of unplanned downtime can have downstream failures to ...
Northern Coalfields Limited (NCL), Singrauli is a major contributor towards fulfilling energy requirement of the nation. NCL is a wholly owned subsidiary of Coal India Limited, under the Ministry of Coal, Government of India and Mini Ratna (Category-I) company since 2007.
OSTI.GOV - OSTI.GOV is the primary search tool for Department of Energy science, technology, and engineering research information funded by the US Department of Energy and the organizational hub for the Office of Scientific and Technical Information. - search tool, Department of Energy science, Department of Energy technology, Department of Energy engineering, Department of Energy research ...
The steel industry represents about 7% of the world's anthropogenic CO2 emissions due to the high use of fossil fuels. The CO2-lean direct reduction of iron ore with hydrogen is considered to offer a high potential to reduce CO2 emissions, and this direct reduction of Fe2O3 powder is investigated in this research. The H2 reduction reaction kinetics and fluidization characteristics of fine ...
Noise & Vibration. A new predictor for ground vibration prediction and its comparision with other predictors. A Study on Noise Pollution due to Traffic at Assilmetta Junction in Visakhapatnam City, India. A Summary of Fatal Accidents Due to Flyrock and Lack of Blast Area Security in Surface Mining, 1989 to 1999.
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Drilling and blasting is the most economical and widely applied technique due to its versatility to excavate rock mass under different geological conditions (Yang et al. 2016).During rock blasting, a large amount of energy is released in the form of pressure (up to 50 GPa) and temperature (up to 5000 K; Azizabadi et al. 2014).It is also well known that no more than 30% of energy is spent on ...
Karnataka, India Tel: 08153-275008; Fax: 08153-275002 Email: [email protected] ABSTRACT This paper deals with ground vibration induced by blasting and its impact on surface structures at two coal mines. Field data from production and single hole blasts were ... Ground vibrations due to blasting at OC-2 were monitored at different
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The vibration levels in no damage zone are taken as safe level of vibration, The threshold value of vibration for the safety of underground workings is recommended based on the RMR of the roof ...
Prediction and Assessment of Ground Vibration due to Blasting, 1998-99 of Software for Design of Support System for Longwall Gate roads, 1999-2000 ... Lafarge India. Optimization of blast design parameters and ground vibration monitoring. ... Inspection of Sand Mines to verify the compliance status of Environmental Clearance. 1.43. 16. 2016-17 ...
D.P.Blair The effect of blasting on urban environment 121 S.Strelec, I. Gotic & B.Bozic Minimum distance between charged boreholes for safe detonation 127 P.ARustan Blast damage study by measurement of blast vibration and damage in the area adjacent 137 to blast hole R.LYang, P.Rocque, P.Katsabanis & W.F.Bawden Applications of modelling to ...
In the European Union (EU), it is estimated that 20 per cent of the population live in areas with unacceptable noise and vibration levels. The main sources of noise and vibration on the railway system are due to rolling, cornering, aerodynamics, bridge crossing, auxiliary equipment, and transmission through the ground.
R&D is also needed on sensing tools to look ahead of the bit or a TBM so that potential problems (e.g., blowouts, lost circulation, or waterfilled fractures) can be detected early and appropriate remedial action can be taken. This information can also be used to optimize drilling variables such as the weight on the bit and the rotary speed.
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Borax characteristics band held at 1310–1380 cm −1 is due to B–O bond in [BO 3] triangular and 1141–1150 cm −1, B–O bond in [BO 4] tetrahedral. The trigonal ring structure by borate group, B–O–B ring bending nearly at 545–560 cm −1 as strong deformation vibration of B–O bond at 645–655 cm −1 followed.
To investigate the effect of frequency on cyclic strength of soil cyclic triaxial tests have been done on coastal Digha sand at 3 frequencies i.e. 0.5, 1 and 2 Hz. Soil sample has been prepared at R d = 25% at σ o = 50 kPa and at R d = 85% at σ o = 100 kPa (shown in Fig. 11 a) and at R d = 45% at σ o = 400 kPa and at R d = 65% at σ o = 200 ...
ground vibration level during the blasting. Ground vibration is directly related to the quantity of explosive used and distance between blast face to monitoring point as well as geological and geotechnical conditions of the rock units in excavation area. Blast induced ground vibration is an impact from the use of explosives that has historically
C. BLASTING (1) Blasting done by: (2) Availability of ground vibration monitoring equipment: (3) Adequacy of blasting personnel & supervisors: (4) Precautions taken & followed: (5) Blasting shelter: (6) Deficiencies observed, if any: D. Arrangement for fire fighting and …
DSR is susceptible to various diseases and rice blast is one of the most common. 12 and damage due to rice blast increases under water stress conditions, 13 since the water level affects several processes such as liberation and germination of spores and infection in rice causing blast. 48 The crop microclimate especially dew deposition is ...
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Angshuman Das currently works at the department of civil and environmental engineering, Indian Institute of Technology Patna. Angshuman does research in Geotechnical Engineering. Their current ...
ISSN : 2319 – 3182, Volume-2, Issue-1, 2013 107 Design and Analysis of Single Plate Blast Resistant Door Nilesh S. Aitavade1, Dattatray N. Jadhav2, Devidas R. Thorat3 & Satish A. Ramavat4 2Department of Mechanical Engineering, Sardar Patel College of Engineering, Mumbai, 3&4 Godrej & Boyce Mfg. Co. Ltd., Mumbai E-mail : [email protected]; [email protected] ; [email protected] ...
Compact Multi-Component Dynamometer up to 500 N With an exceptionally low threshold, and high sensitivity, the new MicroDyn enables the measurement of incredibly small loads, and so it provides the ideal solution for micro machining processes. Highly dynamic forces can be captured with great accuracy thanks to all three axes (x,y,z) all having a resonance of over 15 kHz. In addition to this ...
Co-Coordinator in R&D Project on " Assessment of Blast Performance Based on Explosive / Energy Distribution", sponsored by Coal India Limited, Rs. 1.234 crore (2010-2013). 6. Co-Coordinator in R&D Project on "Modeling of Airborne Dust in Opencast Coal Mines", sponsored by Coal India Limited, Rs. 81.07 Lakhs (2011-2014).
We "Ono Sokki India Private Limited" are a broadly recognized organization involved in manufacturing a large assortment of Sound Level Meter, Torque Meter, FFT Comparator, & FFT Analyzer and many more.Our provided products are designed under the direction of experts at our vendor's ultra-modern processing unit. These products are highly demanded by the customers for their fine finishing ...
Temet's ground shock isolators are ideal for protecting mechanical and electrical installations against ground shock effects and to prevent transmittance and propagation of self-exited vibrations. Industrial blast protection solutions for defence applications. Blast protection in critical industrial environments is …
CSIR – CIMFR, Unit-1, Nagpur, established in June-1986 is a blue chip division of laboratory and is engaged in R&D activities and technical services for the Indian mining industry. The Nagpur centre, with its precisely articulated mandate is able to cater the technical need of mines all over the country because of its location advantage and its symbol of credibility.
During underground hard-rock mining, the drilling and blasting method currently remains the most economical excavation method, and the rock may experience a multistrain-rate spectrum under quasi-static, dynamic, and rheological loading conditions and their combination as well. The study on the damage mechanism of rock under multistrain-rate condition that induced by mining excavation is the ...
