With the development of the mechanized longwall mining method, underground coal mining has been improved both from production and productivity point of views (Hosseini et al., 2012b, Hosseini et al., 2013).However, there are still certain risks and hidden structure defaults during mining operation that can result in a persistent safety hazard and an …
This remarkable feat by Vedanta Sesa Goa makes it the first iron ore mining company in India to deploy this innovative and cutting-edge, state-of-the-art technology at its operations.
The past seismic history of worked out mines in India shows some large visible ground subsidence events and recent sinkhole formations in the densely populated areas close to the mining area, causing serious social, economic and political concerns to the residents as well as district administration and state government. ... 2002 7 Modified ...
East Asia's complex tectonic history makes it a unique place for plate-tectonic studies. While the crust and mantle structures beneath this region have been extensively investigated by receiver function and many different kinds of tomography studies, discrepancies among seismic velocity models have complicated our understanding of East Asia's tectonic …
Material. P-wave (m/s) S-wave (m/s) Air. 343. N/A. Water. 1450 - 1500. N/A. Ice. 3400 - 3800. 1700 - 1900. Oil. 1200 - 1250. N/A. Vegetal Soil. 300 - 700. 100 - 300 ...
The effect of blast-induced ground vibration on structures was examined. The aim was to investigate the extent to which the strength attributed by seismic design can resist the effect of mine blasts, as both earthquakes and blasts generate lateral forces. The study was conducted to see whether and how blasts can be controlled such that seismic design of …
Iron ore extraction in Goa in done through the surface by open pit mining. Open-pit mining is considered to be more economical and safer than underground mining, especially when the …
Geophysical Prospecting, 2020, 68, 7–23 doi: 10.1111/1365-2478.12855 Deep reflection seismic imaging of iron-oxide deposits in the Ludvika mining area of central Sweden Magdalena Markovic1∗, Georgiana Maries1, Alireza Malehmir1, Julius von Ketelhodt2, Emma Bäckström3, Monica Schön3 and Paul Marsden3 1 Department of Earth Sciences, Uppsala University, …
DOI: 10.1016/S0926-9851(00)00014-8 Corpus ID: 33220734; The seismic velocity distribution in the vicinity of a mine tunnel at Thabazimbi, South Africa @article{Wright2000TheSV, title={The seismic velocity distribution in the vicinity of a mine tunnel at Thabazimbi, South Africa}, author={Cedric Wright and E. Walls and Donizeti de Jesus Carneiro}, journal={Journal of …
Data from a network of 41 broadband seismic stations operated from 2009 December to 2016 March in a hitherto unmonitored zone, enabled us to investigate the distribution of local seismicity and 3-D crustal velocity structure.
SEISMIC VELOCITY MODEL BUILDING: AN AID FOR BETTER UNDERSTANDING OF SUBSURFACE- A CASE STUDY FROM CAMBAY BASIN, INDIA Ajeet Kr.Pandey*, Ravendra Kumar, Manish Shukla, Anil Negi, A. K. Tandon Summary A seismic velocity model is necessary to map depth and thickness of subsurface layers interpreted from seismic reflection images.
Our direct acoustic velocity measurements of iron-bearing majorite indicate that the incorporation of iron into majoritic garnet does not drastically affect its elastic moduli and their pressure derivatives. ... measured pressure derivatives of iron-bearing majorite are about 3.6 times lower than required to account for the high seismic ...
Predrilling prediction of pore-pressure (PP) from seismic velocity has significant impacts on drilling of new wells. Model based post-stack seismic inversion has been carried out along an 8km ...
The deposition of iron ore in Goa is over an area of 90 km 2 strike a length of 25 km. Goa is situated on the west coast of India between the Arabian Sea and the Western Ghats. The …
potential of the atmosphere in the iron ore mining region of Goa. The State of Goa (India) is well known for its iron and manganese ore production. The iron ore is pre-dominantly mined by …
DOI: 10.1016/j.epsl.2024.118764 Corpus ID: 269944893; A high-resolution seismic velocity model for East Asia using full-waveform tomography: Constraints on India-Asia collisional tectonics
Present study focuses on the applicability of size-strength rippability classification system for laterite excavation in iron ore mines of Goa. To fulfill the objective six open pit iron ore mines …
Early studies on the compounds of Mg, Fe, and O focused on iron magnesite (Mg 1-x, Fe x)O, one of the main components of the lower mantle.Researchers investigated its equation of state, melting under high pressure, the pressure–induced spin transition of Fe, and its effects on the seismic properties of the lower mantle [15, 16].Liu et al. [17], compared the …
Seismic inversion is a geophysical technique used to estimate subsurface acoustic impedance models from seismic reflection data. The basic concept behind seismic inversion is to establish mathematical assumptions that can relate seismic responses to geological formation properties. This study addresses two types of seismic inversion methods, namely Band …
PSHA efforts for estimating seismic hazard in India is presented in Chapter 1. The tectonic setting of the country and the fault map are discussed in Chapter 2, to delineate thirty-two source zones. Preparation of the national level earthquake catalogue, from the remote past till the end of
Single-crystal elastic moduli of synthetic iron-bearing majoritic garnet were measured using Brillouin spectroscopy up to a pressure of 26 GPa. We found that the iron-bearing majoritic garnet (Mg 0.79 Fe 0.08 Al 0.30 Si 0.84 O 3) remains elastically isotropic throughout the pressure range of this study.The shear and adiabatic bulk moduli and their …
Seismic depth imaging of iron-oxide deposits and their host rocks in the Ludvika mining area of central Sweden. ... Our workflow has successfully been showcased on a 2D surface seismic legacy data set from the Ludvika mining area in central Sweden acquired in 2016. ... In order to account for the shallow low-velocity layer within the depth ...
P- and S-wave velocity modeling using 3-C seismic data in WDC of southern India The seismic data was acquired by using explosives blasted in a pattern of holes and the charge size increases as the spread length increases, which varies from 100 kg to 1850 kg depending upon the distance between the shot point and the corresponding spread
THE METALLIFEROUS MINES REGULATIONS, 1961 G.S.R. 337, dated the 18 ... They extend to the whole of India 2[***] (3) They shall apply to every mine of whatever description other than a coal or an ... sandpacks, iron-work, or any other form of support; (36) "tub" includes a wagon, car, truck, hutch, bandy, bucket or any other vehicle for ...
Earthquake magnitude recurrence relations are developed for the State of Goa on the west coast of Peninsular India. The Seismic influence zone for the study area of Goa was considered as …
This research paper mainly focuses on the prediction of ripper production for laterite excavation in iron ore mines of Goa, India. Generation of thick laterite cover is due to …
Reflection seismic data were acquired within two field campaigns in the Blötberget, Ludvika mining area of central Sweden, for deep imaging of iron‐oxide mineralization that were known to ...
Analysis of the refracted arrivals on a seismic reflection profile recorded along the wall of a tunnel al an iron mine near Thabazimbi, South Africa, shows significant variation in P-wave velocity in dolomite in and away from the de-stressed zone. Very low seismic velocities away from the tunnel wall are associated with alcoves or 'cubbies' involving offsets in the wall …
L 1 norm. The L 1 norm was se lected over the least-squares norm L 2 as it is much less sensitive to the effects of large errors in outlier data[10].L 1 is given by: m ˆ ˆ n Lv obs theor 1 (, h ) = ¦¦t ij −t ij (1) i=1 j =1 where vˆ is the vector of velocity model parameters; hˆ vector of seismic sources parameters (coordinates and origin times); number of seismic events; n m
A Ground Seismic Survey Company in India with 17 Years Experience on Refraction, Reflection, MASW, Crosshole, Downhole Test for Mineral, infrastructure Projects ... Seismic velocity coupled with complementary geological information such as borehole logs, geological maps, outcrops data, etc. yield vital information on characterization of ...
The velocity in a porous rock depends primarily on the matrix velocity, the porosity, and the nature of and velocity in the pore fluid. The empirical time-average equation [of the same form as equation (5.3b)] relates the specific …
This mining operation was carried out by Mahalakshmi Company on behalf of Rajmahal Opencast Project of Eastern Coalfields Limited (ECL) at Paharia Bhodaye site in Godda district near Ranchi. Hundreds of miners die due to …
The site investigations for rippability were carried out at six different open pit iron ore mines operated by private companies covering the mineralized strike length of 65 km from northwest …
SAIL is operating 8 iron ore mines and 2 flux mines spread over Jharkhand, Odisha and Madhya Pradesh to supply Iron ore, Limestones and Dolomite to SAIL steel plants in eastern sector of the country.SAIL iron ore mines are located at Kiriburu, Meghahatuburu, Gua and Chiria in Jharkhand, and at Bolani, Barsua, Taldih and Kalta in Odisha.
