Highwall mining systems can be used to recover this coal The use of highwall mining systems has increasingly come into play in the US and Australia However it is not common in Indonesia Mark C Chase FE Campoli AA 1995 Analysis of retreat mining pillar stability Proceedings of 14th conference on ground control in mining pp 49 59
Get PriceDuring this project I was responsible for the following Collecting data in the form of Rock Mass/Highwall response to mining activities and structural mapping with the Rock Engineer Identification of the high rock fall risk areas and recommend control measures Determining Ground Control Districts and outlining control measures for
Get PriceWhen designing a high wall mining the mining engineer must specify 1 Web pillar width 2 number of web pillars between barrier pillars and 3 barrier pillar width The other design parameters determined by the high wall miner are hole width or web cut the mining height and the overburden depth
Get PriceHIghwall Mining Applicability Design & Safety by Porathur Roy Shen and Karekal 2024 CRC Press modelling tools 4 Indian case studies 4 1 Introduction 4 2 Site A 4 3 Site B 4 4 Site C 4 5 Site D 4 6 Performance analysis of highwall mining at OCP II and MOCP 4 7 Conclusions 5 Structural mapping 5 1 Introduction 5 2 Framework for
Get PriceThis study examined records from 5 289 highwall miner holes with a total completed footage of about 2 560 000 feet to understand the reasons for early pull out Average lost footage is typically about 20% of planned footage Only 35% of the holes reached planned depth and 20% were short due to rockfalls
Get PriceHighwall mining has become a widely applied method in surface mining It is commonly used alone or in conjunction with contour or slot mining It provides 800 to 1 200 ft of additional recovery when in contour mining the economic stripping ratio is reached or in slot mining when surface access to a reserve is limited
Get PriceHighwall mining a new approach in south africa revised TIKESHWAR MAHTO Surface miner and its performance 1 Safdar Ali Viewers also liked 9 Topic 5 Mining Methods Part I Surface mining Geology Department Faculty of Science Tanta University VOCATIONAL TRAINING FROM SECL SOHAGPUR KHAIRHA MINE PPT POWER POINT PR Piyush Dwivedi
Get PriceHighwall mining is employed for coal recovery optimiszation It s used once the economic strip limit of a surface mining operation has been reached and allows operators to extract additional coal The process involves driving a cutter module into the coal seam using a remotely operated miner A penetration depth of 300 400 metres is made
Get PriceHighwall mining involves driving a series of parallel entries with web pillars in between These entries are driven by using a continuous miner with attached conveying system to extract locked up coal behind the highwall slope when the open cut coal mine reaches its ultimate limit These entries are driven unmanned unventilated and unsupported
Get PriceThe In this article we will be taking a look at the 16 biggest mining companies in the world To skip our detailed analysis you can go directly to see 5 biggest mining companies in the world The mining industry is easily one of the most important sectors in the global economy and was worth around $1 84 trillion in 2024 while growing to $2 06 trillion in 2024
Get PriceUnder the highwall mining conditions the rock mechanical properties and failure modes may be rather different from those of shallow rock and cannot be explained merely using conventional rock
Get PriceHighwall mining is very similar to auger mining in its concept where the entry into the coal seam in made at the highwall of the ultimate pit limit The difference lies in the use of a more sophisticated machine known as a highwall miner The highwall miner shares some common elements with a continuous mining machine
Get PriceThe Highwall mining of ore bed the present invention relates to gather materials The invention particularly relates to a kind of this type of Highwall mining system it comprises a be
Get PriceHaving an open mind to continuously assimilate knowledge the experience I have gained for over 4 four years now in the mining industry with regard to prospecting exploration EIA drilling blasting excavation transportation crushing production geotechnical rock analysis risk and mining camps management has enabled me to shape other related skills in the use of blasting software to
Get PriceINTRODUCTION Highwall mining is a method used in surface coal mines to extract coal by driving a series of parallel or sub parallel unsupported entries from the base of the highwall of an open pit mine for a distance of 300 500m by remotely controlled continuous miners
Get PriceMo et al 2024 quantitatively studied the influence of backfilling on rib pillar strength in highwall mining by using the FLAC2D software Nikumbh and Chandar 2024 researched the slope stability by using the ANSYS/LS DYNA Woo et al Woo et al 2024 studied interaction behavior between soil and a post based on Winkler s spring theory
Get PriceThe Value of Empirical Analysis and Lessons Learnt for Managing Highwall Geotechnical Hazards Gurshaan Virk Geotechnical Engineer BHP Mitsubishi Alliance Queensland Mining Industry Health and Safety Conference is an initiative to promote health and safety in the Queensland mining industry
Get PriceImpact on the environment and local community The assessment team has concluded there is a low risk of further breaches of the TSF or a breach of the New Alamasi water dam Williamson Diamonds has constructed an initial 6 m high wall to close the breached wall area As a precautionary measure WDL has also constructed containment walls
Get PriceCaterpillar Mining 69 3K subscribers When the conditions are just right you re hard pressed to find a better coal mining machine than a highwall miner This video shares the key features
Get PriceHighwall miners of this type can advance much further into the highwall than augers and machines are available that can mine in as far as 1 600 ft achieving production levels in Appalachia
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Get PriceThe design of mining slopes is dictated by the behaviour of the rock mass which depends on its mechanical properties However it is very difficult to directly determine the mechanical properties of rocks at a scale Numerical back analysis of highwall instability in an open pit a case study JM Kabuya et al 938 Slope Stability 2024 2 Back
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Get PriceHighwall surface monitoring systems can include radar systems robotic total station systems and surveying target prisms Subsurface measurements can incorporate inclinometers time domain reflectometry and borehole extensometers to collect data on rock mass displacement
Get PriceHighwall Mining Abstract The highwall miner can be used to mine the retained coal in the end slope of an open pit mine However the instability mechanism of the reserved rib pillar under dynamic and static loads is not clear which restricts the safe and efficient application of the highwall mining system
Get PriceReported surface coal mine highwall failures continue to concern the Mines Inspectorate Recently a shot had been drilled and loaded in the highwall which later collapsed This added the hazard of unexploded product requiring misfire recovery Many events have occurred without personnel or equipment being present however the most serious incident for some time occurred when a section of
Get PriceHighwall mining is practised when the open pit coal mines reach their pit limits due to the presence of surface dwellings or uneconomical stripping ratios It involves driving a series of parallel entries separated by rib pillars using a remotely operated continuous miner into a coal seam exposed at the highwall [7]
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Get PriceToday drone based highwall scanning technology provides operators unprecedented insight into essential geological and geotechnical attributes of mining terrain including the position of coal seams and mining fault s fault persistence the distribution of rock units and other characteristics
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