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problems in deep opencast mines

  • Drilling process in opencast mine - YouTube

    Oct 06, 2015· drilling process is first phase of blasting... drilling in lignite open cast mines panandhro...katchch bhuj....


  • The Advantages of Open Pit Mining | Sciencing

    Mar 13, 2018· While open pit mining poses some danger to mine workers, there are some safety advantages over shaft mining. Workers in an open pit mine are not subject to death from mine cave in accidents. Open pit miners are not exposed to explosive poison gas …


  • What are some of the most important disadvantages and ...

    Sep 06, 2016· Unlike in opencast Mining where all land above the mineral property has to be acquired. This land acquisition is very big task, whether it agriculture land or forest land. 2. The soil and agriculture land is destroyed in opencast Mining. Not in the case of UG Mining. 3. No destruction of Forest and ecosystem is not disturbed. 4.


  • Environmental Risks of Mining

    When companies break up materials during mining, the dust can release a variety of heavy metals commonly associated with health problems. As dust, these minerals (such as the asbestos-like mineral riebeckite) can be absorbed into lung tissue, causing problems like pneumoconiosis and silicosis, commonly known as "Black Lung" (Paul & Campbell, 2011).


  • Water and energy assessment for dewatering in opencast mines

    Dec 01, 2014· Features and problems of numerical modelling application for ground water estimation in mining environment have been reviewed (Rapantova et al., 2007). Mine water inflow rates have been estimated using spread sheet application (Johnson and Cooper, 2010). Table 1 summarises the water assessment models applied to opencast mines.


  • Opencast coal mining rules keep England in history's pit ...

    Jan 13, 2011· Opencast coal mining rules keep England in history's pit. The green hillside they had looked out on, where they walked their dogs and where their children played, is being turned into a hole – the Ffos-y-Fran pit – 200 metres deep and three kilometres wide. The edge of the pit is just 36 metres from the nearest homes.


  • Advantages and disadvantages of open pit mining ~ LORECENTRAL

    Apr 02, 2018· Advantages and disadvantages of open pit mining. Open pit mining is profitable when the deposit is not very deep or when the terrain is sandy or delicate, so that underground mining is not possible. Labor costs are lower, both in excavation and transportation, and allow the use of …


  • Opening New Mines - Massachusetts Institute of Technology

    Opening New Mines. This is not so much a mining problem as it is a problem with waste and overuse. The only real solution to a phosphorus shortage will come through increased recycling and use of alternative sources, such as animal waste (see Phosphorus Conservation Page) (Vaccari, 2009).


  • Coal is mined by two methods – surface or ‘opencast ...

    Sep 12, 2010· Coal mining deep underground involves a higher safety risk than coal mined inopencast pits. However, modern coal mines have rigorous safety procedures, health and safety standards and worker education and training, which have led to significant improvements in safety levels in both underground and opencast mining (see graph on


  • South Africa’s Biggest Open Pit Mines | KH Plant

    Motor graders also play a role, maintaining haulage roads so that both equipment and mined material can be transported to and from the mines. South Africa is home to some of the biggest open pit mines in the world, including the well-known Kimberley Mine, Palabora Mine and Jagersfontein Mine. Kimberley Mine


  • DEVELOPMENT OF EFFECTIVE TECHNOLOGY FOR ONLINE …

    DEVELOPMENT OF EFFECTIVE TECHNOLOGY FOR ONLINE SLOPE MONITORING IN OPENCAST MINES – R&D INITIATIVE 1Prof.Singam Jayanthu 2Guntha Karthik 1Professor,2Ph.D. Research Scholar, Mining Engg Dept., NIT Rourkela, Odisha, [email protected], [email protected] ABSTRACT This paper presents overview of accidents due to ground control problems in Indian mines …


  • GEOTECHNICAL CONSIDERATIONS IN OPEN PIT MINES

    Geotechnical Considerations in Open Pit Mines Version 1.0 Department of Minerals and Energy Page 7 of 49 3.1 Planning for total mine life 13.8 (1) The principal employer at, and manager of, a mine must ensure that geotechnical aspects are adequately considered in relation to the design, operation and abandonment of quarry operations. Design approach


  • WASTE AND OVER BURDEN MANAGEMENT IN MEGA …

    adopted in Mega Opencast Projects. But it has certain limitations and inherent dangers of Dump Slides posing operational and Safety threats. ☼ When the mines are being planned for production from 300m depths at stripping ratio upto 1:15 even for D or F Grade Coal, the problems of Dump Slide and Dump Failure have to be managed.


  • Environmental Impacts of deep opencast Limestone Mines in ...

    ENVIRONMENTAL IMPACTS OF DEEP OPENCAST LIMESTONE MINES IN LAEGERDOW, NORTHERN GERMANY Alexander Iwanoff Saarlandstrasse 23 D-22303 Hamburg, Germany ABSTRACT Deep opencast mines for limestone of Upper Cretaceous age in the northernmost state of Germany, Sch!eswig-Holstein, greatly impact the local environment. In three pits with depths of


  • No Opencast! (Do or Die)

    An article from Do or Die Issue . 7.In the paper edition, this article appears on page(s) 23-32.No Opencast! History - Direct Action - Analysis - Contradictions. No Opencast is a campaign run by the National Union of Mineworkers (NUM) and supported by Women Against Pit Closures and members of the Miners Support Groups.


  • Optimization of Blasting Parameters in opencast Mines

    optimization of blasting parameters in opencast mines a thesis submitted in partial fulfillment of the requirements for the degree of bachelor of technology in mining engineering by manmit rout & chinmay kumar parida under the guidance of dr. h. b. sahu department of mining engineering national institute of technology rourkela-769008


  • Open-pit mining - Wikipedia

    Open-pit, open-cast or open cut mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow.. This form of mining differs from extractive methods that require tunnelling into the earth, such as long wall mining.Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface.


  • Environmental impacts of deep opencast limestone mines in ...

    Deep opencast mines for limestone of Upper Cretaceous age in the northernmost state of Germany, Schleswig-Holstein, greatly impact the local environment. In three pits with depths of nearly 100 m, mine pumping affects deeper aquifers and sometimes shallow ones as well.


  • Opencast Mining and Qarrying

    a year, despite closure of the inefficient deep mines. Since 1992, the deep mining sector has been much depleted but the opencast sector has declined a little reaching 16.6 m (provisional figures) for 1994. With coal privatisation, of course, the whole idea of justifying opencast mining so as to help the finances of British Coal came to an end.


  • Geo-Mechanical Modelling for Optimization of Rock Slope …

    GEO -MECHANICAL MODELLING FOR OPTIMIZATION OF ROCK SLOPE IN AN OPENCAST COAL MINE Dr. Masoud Monjezi Dr T. N. Singh Mr. Amit Pandey Mr. Saurabh Puri Organization IT -BHU Tehran, Iran Varanasi, U.P.(India) ABSTRACT Jharia Co alfield, in India, is …


  • Status and Developments of Slope Monitoring Techniques in ...

    Status and Developments of Slope Monitoring Techniques in Opencast Mines Conference Paper (PDF Available) · June 2016 with 2,295 Reads How we measure 'reads'


  • A Low Rise Hospital Development on Restored Opencast Fill

    United Kingdom opencast coal mining has often taken place in areas of past deep mine activity in or around population centres. The opencast mines in the United Kingdom are characterised by multiple thin seams giving overburden/coal ratios up to 20, excavation frequently below the water table requiring dewatering and back­


  • OPENCAST COAL MINING AT LARGE DEPTH IN INDIA- …

    deposits has increased. To increase the depth of existing opencast coal mines is the only easy and cost effective option to meet the demand supply gap of coal in India. Various problems and their feasible solutions have been dealt in brief which are likely to encounter while extraction of deep seated coal deposits through opencast mining.


  • Environmental impacts of deep opencast limestone mines in ...

    Deep opencast mines for limestone of Upper Cretaceous age in the northernmost state of Germany, Schleswig-Holstein, greatly impact the local environment. In three pits with depths of nearly 100 m, mine pumping affects deeper aquifers and sometimes shallow ones as well. The total amount of mine water pumped ranges up to 6 * 10 6 m 3 /year. Due ...


  • Opencast Mining - an overview | ScienceDirect Topics

    S.K. Chaulya, G.M. Prasad, in Sensing and Monitoring Technologies for Mines and Hazardous Areas, 2016. Abstract. Opencast mining operations involve huge quantities of overburden removal, dumping and backfilling in excavated areas. A substantial increase in the rate of accumulation of waste dumps in recent years has resulted in greater height of the dump for minimum ground cover area and also ...


  • (PDF) OPENCAST COAL MINING AT LARGE DEPTH IN INDIA ...

    PDF | In present review study authors, have tried to present a glimpse of the forthcoming constraints in deep seated opencast mining of coal deposits in India. With the increase in demand of coal ...


  • Basics of an open pit mine

    Open pit mines can be used in coal mining, and they are used extensively in "hard rock" mining for ores such as metal ores, copper, gold, iron, aluminum, and many minerals. In a open pit coal mine, the pit bottom would be the bottom mined coal seam elevation, since it is usually feasible to extract multiple seams when surface mining coal.


  • (PDF) Status and Developments of Slope Monitoring ...

    The paper suggests that a regular long term slope monitoring technique based on ground realities is necessary in planning large and deep opencast mines for ensuring high safety and increased productivity 1. Introduction With increasing depths, the problems associated with rock deformation, their intensity and frequency also increase.


  • Modelling the Hydrogeochemical Evolution of Mine Water …

    focus of these studies was either on abandoned, deep underground mines or metal mines. To date, the quantification of the ―first flush‖ phenomenon (Whitehead and Jeffrey, 1995) in backfilled, decommissioned opencast coal mines has not been studied in detail. As the duration and magnitude of


  • Opportunities and Challenges in Deep Mining: A Brief ...

    It also addresses some technical geomechanical issues associated with deep mining. Some of the current challenges, advances, and prospective issues in deep mining can be summarized as follows: (1) Deep mining will become common in the future as coal and mineral resources at shallow depths gradually become exhausted.


  • What impact does open pit mining have on the environment ...

    Aug 29, 2016· As it is opencast so it will badly effect the environment in case of dust… There are some major causes like dust, noise , water pollution , air pollution etc. As compared to ug mining method, inflammable gases are not present bt production of dust during drilling and blasting will adversely affect the environment as well as human nature….


  • What Are the Disadvantages of Opencast Mining? | …

    What Are the Disadvantages of Opencast Mining? Opencast mining, also known as surface mining or strip mining, has disadvantages that include disturbance of the environment and local ecosystems, exposure of radioactive elements and contamination of freshwater sources. The use of heavy machinery and blasting techniques also create environmental ...


  • Environmental impact of mining - Wikipedia

    Environmental impacts of mining can occur at local, regional, and global scales through direct and indirect mining practices. Impacts can result in erosion, sinkholes, loss of biodiversity, or the contamination of soil, groundwater, and surface water by the chemicals emitted from mining processes. These processes also have an impact on the atmosphere from the emissions of carbon which have ...