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·The production processes in open cast mining activities are primarily associated with rock blasting operations which trigger blast induced ground vibrations causing significant damages to the surrounding surface structures Regular monitoring of the ground vibration levels serves as crucial input to the regulatory authorities and policymakers for designing and
·This study presents source apportionment and toxicity level of trace element concentration in total suspended particulate matter TSPM fraction of settled dust at different benches of opencast coal mine In opencast coal mine various mining associated activities are responsible for emission of TSPM It is significant to study these airborne TSPM and
·Opencast mining overview Download as a PDF or view online for free OB and mineral deposit can be extracted by formation of benches The angle of slope does not exceed 45 from the horizontal A bench has two elements the floor and the face high wall
·PDF Definition of Open pit Mining Parameters Open pit Mining method; Bench; Open Pit Bench Terminology; Bench height; Cutoff grade; Open Find read and cite all the research you need on
·in an opencast mine The study revealed that mounting height was very important in order to achieve all the required lighting standards Pal et al [3] proposed a design of haul roads lighting system for opencast coal mine using green energy A prototype board was also constructed and it showed fairly constant lumen output over varying input
·Open pit mining also known as opencast mining open cut mining and strip mining means a process of digging out rock or minerals from the earth by their elimination from an open pit or borrow Open Cut mines are dug on benches which portray vertical levels of the hole These benches are normally on four meter to sixty meter intervals
·In designing the workings for a given opencast pit the shape of the wall will be selected in accordance with the following considerations a the need to ensure the stability of the separate benches and the wall of the pit as a whole; b the need to protect the lower level benches against the danger of fragments of rock minerals and other
·These robust integrated methodologies that simulate digital mining ecosystems ensure the connectivity among benches making the opencast systems more sustainable and productive
·amplified when the height and width of the benches became higher and wider to ply massive mine machinery to improve the run of mine but it resulted in unstable bench slopes
Presently over 75% of the total production of coal in Indian mines is being carried out by opencast mining Accordingly a mechanised spraying device has been developed for spraying the fire protective coating material for preventing spontaneous combustion in coal benches of opencast mines jointly by Central Mining Research Institute Dhanbad
·Proper design of working benches haul roads berms spoil heaps and drainage arrangement and their proper upkeep is of paramount importance in an opencast mine from the point of view of productivity cost effectiveness and safety Mining engineers should take an integrated view of vital parameters The article gives some guidelines on factors
From the point of view of blast casting application in a benched deep hole in an opencast mine ECP is an important indicator to measure casting effect and production cost Rock benches at the top of the blast casting area are divided horizontally The coal seam in the second mining districts inclines from North to South with the dip angle
·Bench is a horizontal layer of ore rock upon which stripping and mining are performed in an open pit mine The bench is an essential constituent of the open stope The bench on which stripping and mining are conducted is called the working bench The bench temporarily unused is called a temporary nonworking bench
·The slope condition is assessed based on the influence of strike fault near or within the mine workings spoil dump near the slope crest localized instabilities on the benches and drainage condition in the mine The ratings for different parameters are shown in Table 2 Adjustment of Slope Condition
·The Jayant project of Northern Coalfields Limited is located in the Singrauli Coalfields of Singrauli district Madhya Pradesh between latitudes 24 ° 6 45"to 24 ° 11 15" and longitudes 82 ° 36 40" to 82 ° 41 15" The overall geomorphology of the project site mainly comprised of elevated plateau like feature having elevation ranging from 300 m to 500 m
·Drilling and blasting are the major unit operations in opencast mining Inspite of the best efforts to introduce mechanization in the opencast mines blasting continue to dominate the production Explosives contribute currently about 5% of the direct cost of production and if the aggregate cost of drilling and blasting is taken together this
·ABSTRACT Slope stability analysis formsan integral part of the opencast mining operations during the life cycle of the project In Indian mining conditions slope design guidelines were not yet formulated for different types of mining failure effect one or two benches at a time due to shear plane jointing slope erosion due to surface
are working on with opencast mining and most of the mining operations are performing with drilling and blasting The opencast working plays a crucial role in mining because of the scientifically and analyze the type of explosives for various benches So with the help of a computer assisted method or module „SABREX‟ was helpful
·The figure 2 shows how the in land distance has been calculated using the ANSYS 15 software by modelling the opencast mine The given figure 3 shows the locations of the blast sites and the two monitoring stations from where the data was collected Along with the PPV reading at the monitoring stations other blasting parameters like spacing
·Opencast mechanized method of mining with multiple benches is in practice The average width of the ore body is 115 m and the reef is almost vertical To safely exploit locked resources on the benches of a mine it was intended to scientifically study and design safe and stable slopes for the benches and the overall pit slope Accordingly
·Open pit mining or opencast mining is a surface mining technique used for large scale operations It involves extracting minerals from a pit by removing waste rock and overburden Commonly used for minerals like copper gold and iron ore requires heavy equipment such as trucks and shovels to efficiently extract the ore
·Research studies carried out on opencast mine illumination by different investigators are limited in both India and abroad Mayton [] investigated different surface mining operations in various regions of the United States using visual task evaluation a method used by the CIE and the IES and data were collected for surface mines and quarries in 15 metal
