OVERBURDEN DUMP SLOPE STABILITY: A CASE STUDY …
Slope stability of overburden dumps plays as integral part of opencast mine project throughout the operation process. Waste dumps always have steep angled slopes as the waste has been …
Crawler-Mounted Spreaders
Spreaders mounted on crawlers are utilized in opencast mines for the last step in the continuous dumping process. ... 20.000 m³/h and a direct disposal spreader with an oversized discharge boom of up to 196 m for direct tilting of the overburden; Selected References. Encuentro, Chile
Task 1.4 Geotechnical factors affecting high- and low …
stratigraphy to the base of the Mining Horizon (floor of No. 2B Seam) is divided into three major mining units, namely the Soft Overburden, Hard Overburden and the Mining Horizon. 2.1 Soft …
Effect of Variation of Dragline Bench Height and Cut Width …
Utilizing dragline for stripping overburden in surface mining is essential for boosting coal productivity and sustaining energy production [].The dragline excavates blasted material only in the case of opencast coal mines [7, 9, 17].The bucket of dragline is huge (more than 60 m 3) and heavy; hence, the impact of fragmentation of overburden (OB) material on …
Development of Noise Maps for Opencast Coal Mines …
the noise level at the drilling area, the working area near the coalface, and the overburden removal area were far above the warning limit of 85 dB(A) as prescribed by DGMS, 2011. Noise maps were prepared by using ArcGIS to show different ... In opencast mines, most of the mining machinery produces noise levels in the range of 90-115 dB(A).
Geo-hydrological Stability Analysis of Fly Ash Stabilised Overburden …
This paper examines the utilization of ash in stabilization of overburden dumps in opencast mines. The safety of waste dumps is of key economic importance in mine planning and has been among the ...
BLASTING IN FIRE AREAS IN OPENCAST MINES
Conditions for conducting blasting in fire areas in an opencast coal mine (1) Blasting operations shall be carried out under direct supervision of an Assistant manager in charge of Blasting operations. (2) Persons trained in the job of blasting in Fire area only shall be deputed for the said operation. (3) No explosive other than slurry or emulsion explosives shall …
Anthropedogenesis in coal mine overburden; the need for a …
Salinity and sodicity are prominent challenges associated with coal overburden that is salt-rich from marine deposition during early geological periods, such as the majority of …
Jänschwalde/Cottbus-Nord opencast mines
Jänschwalde opencast mine Overburden conveyor bridge F 60: 34,200 m3/h Bucket-wheel excavator SRs 2,000: 6,000 m3/h Cottbus-Nord opencast mine Overburden conveyor bridge F 34: 8,100 m3/h Mining output Coal extraction Jänschwalde opencast mine Bucket-wheel excavator SRs 1,300: 33,500 m /h Bucket-chain excavator ERs 710: 1,400 m3/h Cottbus-Nord ...
Rock Fragmentation Control In Open Cast Mining
the mine. Presently, seams R-V and R-VI are being extracted by opencast method of mining. The mine is producing about 4.5 Mt of coal and removal of overburden is about 12 Mm. 3. The stripping ratio of the mine is 1:4.72, i.e. 4.72 m. 3. of overburden is to be removed for mining of 1 t of coal. The total coal reserve of the mine is 188.26 Mt.
Opencast Mining
During opencast mining, material overlying the mined minerals, called overburden, is excavated and deposited in a heap. This heap can be located either inside the mine pit (an internal …
MINISTRY OF LABOUR AND EMPLOYMENT …
working of opencast mines for plying of machinery within the precincts of a mine; (zg) "Heavy Earth Moving Machinery (HEMM)" means machinery used in opencast mines for ... transporting minerals or overburden; (zh) "incline" means an inclined passage or …
Performance Analysis of Heavy Earth Moving …
The dumpers that are used in opencast mines have a rigid frame and conventional steering with drive at the rear wheel. As of late 2013, the largest ever production haul truck is the 450 metric tons Be1AZ 75710, followed by …
BLAST VIBRATION MONITORING IN OPENCAST MINES
3.5 Blasting Pattern Followed in Opencast Mines 16 3.5.1 Single row firing pattern 16 3.5.2 Multi Row firing pattern 17 3.5.3 Beside cut pattern other pattern of blasting in multiple row of firing ... 22 After blasting size of overburden 61 . II LIST OF TABLES Table no Title Page no 1 Characteristic of SME 7
Controlled Blasting Within Danger Zone of 500 M From
Drilling and blasting method is the most common method used for extraction of minerals and removal of overburden in opencast coal mines. Now a days, despite the availability of latest mechanical means to cut harder rock strata, drilling and blasting method is still preferred due to its cost effectiveness and productivity. Blasting operations ...
CAS 23 Overburden Removal Cost
Suppose in an opencast mine (ABC), 1350.14 CuM OB was removed in 2015-16 against the production of 432.98 Te of coal, the current ratio will be 3.12 . Contd. - •Mines Overhead – It is indirect cost related to both – mineral extraction and overburden removal •Mining Plan – it is a part of project report,
Design Considerations for Waste Dumps in Indian Opencast Coal Mines …
In opencast coal mines, the waste material overlying the ore body needs to be removed in order to extract beneficial coal reserves profitably.
Opencast Mining (Quarrying): Methods, Advantages
Mineral and overburden are transported by locomotives, belt conveyors or large trucks known as dumpers. Bucket wheel excavators are used in some mines for soft rocks e.g., at Neyveli …
Controlled Blasting Within Danger Zone of 500 M From
Hence, it is need of hour to pace up the production, particularly for the removal of overburden in coal mines to attain the targeted production. This paper discusses the different …
Overburden – Knowledge and References – Taylor & Francis
Mining overburden has to be properly managed to ensure the long-term stability of disposal facilities and to prevent or minimize any water and soil pollution arising from acid or alkaline drainage and leaching of heavy metals (Zheng et al., 2016). ... The first step in an opencast coal mining operation is to remove the topsoil from the area ...
Task 1.4 Geotechnical factors affecting high- and low …
mining units, namely the Soft Overburden, Hard Overburden and the Mining Horizon. 2.1 Soft Overburden This unit is comprised of clay, alluvium and sand, and varies in thickness from a few metres to over 25m. The material is usually removed by truck and shovel operations one cut ahead of mining and battered back to within the natural angle of ...
Stability analysis of mine overburden dump and …
In the present study, slope stability analysis of external overburden dump in Sonepur Bazari opencast mine has been carried out. Morgenstern Price method using constant inter-slice force function conducts the analysis of LEM using Geo-studio Slope/w, and the FEM analysis is carried out using the PLAXIS 2D 2016.
Landslide Monitoring and Counteraction Technologies in …
Lignite opencast mining has made a significant contribution to the production of electricity in a number of European countries. Germany, Greece, Poland, the Czech Republic, Bulgaria and Romania produce approximately 96% of the lignite in the European Union, a total of 433.8 million tons (Kasztelewicz 2012; Bednarczyk and Nowak 2010).However, coal mining is …
Analysis of Accidents Due to Slope Failure in Indian Opencast …
Opencast mining operation involves removal of bulk quantities of overburden, dumping and backfilling in excavated areas. A phenomenal increase in the share of opencast production (93%) in Indian coal industry has resulted into significant problem of waste dumps at present with greater height of the dump constructed over minimum area and giving rise to …
Responsible mining in Lusatia
The opencast mine is spanned by the overburden conveyor bridge. This equipment complex removes the overburden – sand, gravel and clays – from above the lignite seam and transports it directly over the pit by the shortest route to the other side of the mine. Where the lignite has already been extracted, the overburden conveyor bridge ...
Geochemical characterization of mine overburden strata for …
Here, we studied 15 overburden strata (OBS) and four coal seams lying vertically up to a depth of 35 m below ground in an active opencast coal mine located at Margherita (Assam). The pH of the OBS samples ranged from 2.68 to 7.74, and the sulfur (S) content from 194.31 …
Characterisation of overburden dump materials: a case …
Recently, large-scale opencast mining activities in India have led not only to the increased generation of large volumes of overburden (OB) dump materials, but also to the transportation of huge volumes of loose geo-materials from coal faces to areas specifically designated for storing these materials in the form of external or internal dumps. The …
Output Per Man Shift (OMS) of UG and OC mining methods …
Ansari and Singh [2] reported that the overburden (OB) production in the private sector has increased in the financial year (FY) 2013-2014 from 1138 million m 3 to 1599 million m 3 with an ...
OPTIMIZATION OF BENCH DESIGN IN OPENCAST …
mines along with overburden d uring mine reclamation. Option of utilizing coal as h in opencast mines can p roduce a quantum jump in its bulk utilization from meagre 6.96 %
Influence of material composition on post-failure behavior of
Failure of in-pit overburden dumps in open-pit coal mines causes debris to flow toward the active working face, threatening the safety of people and equipment. The evaluation of the potential mobility of failing mass will aid in hazard mitigation associated with unwarranted dump failure. The potential mobility is shown by mobility ratio (ratio of total drop between …
Opencast Mining MCQs Questions & Answers | Mining …
Learn and practice multiple-choice questions (MCQs) with answers related to Opencast Mining. These resources are available for mining engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Opencast Mining chapter is particularly important for students studying mining engineering.
Analysis of accidents due to slope failure in Indian …
Keywords: Accidents' analysis, opencast mines, slope failure, waste dumps. THE overburden removal is the first step in a coal mining operation in opencast mines, in order to expose the under-lying coal for excavation. Opencast mining of coal and metals invariably pollutes the environment, producing
List of Equipment Used in Opencast Coal Mining | Mining
Opencast mining is the oldest method of excavating minerals but the mining operations have been mechanised by the use of heavy earth moving machinery during the last 50 years resulting in excavations on a scale which was unthinkable half a century ago. ... If the overburden or mineral is suitable for ripping its breaking is possible with the ...