surface coal mine opencast drill and blast

Surface Mine Blast Design and Consultant System

surface mine blast design. Objective The objective of this investiga­ tion was to develop an interactive blast design program that guides the user through the various blast desi gn steps and provides an 'expert' results system to evaluate the of post-blast vibration and airblast observations. The three

open cast machinery and equipment used in surface mining

Blast Free Mining in Indian Surface Coal Mines Springer Link. Table 3 Opencast Coal mines of CIL using surface miners during 2010-11. Coal. Company These machines are currently in use in India.

Chapter 8 BLAST DESIGN - NPS

of explosive energy be placed into proper perspective within the entire drilling, blasting, handling and process-ing operation. This relationship is illustrated in Figure 8-7. (Figure 8-7) Analysis of efficient blast design.. Efficient blast designs combined with the proper choice of explosive can produce better fragmentation with

BEST PRACTICES IN DRILL AND BLAST - IQPC Corporate

the mining sector, drilling & blasting operations are being conducted through more strategic avenues. Mining companies recognise the need to improve analysis of site data, select appropriate tools and technologies, achieve higher fragmentation and improve exclusion zone management.

open surface mining equipment

Surface Open pit Mining Mineral Processing Metallurgy. The economic depth for surface mining can range from 100 metres to 1 kilometre and over The surface mining can be classified depending on the location of the deposit or the type of mining method Generally speaking we can classify surface mining in three main typologies that are open pit open cast and quarry

The basics about blasting. - Mining Weekly

Feb 04, 2019· All mining operations requires blasting at one stage or another. Blast hole drilling is used in mining where a hole is drilled into the surface rock, packed with …

Masama Coal Project - The first open-cast coal mine in ...

The Masama coal project will be a conventional open-cast mining operation using trucks and shovels for the first 25 years of the mine life. The E, A, and AU coal seams in the West block are amenable for open-cast mining. Shallow underground mining method involving drill and blast operations will be carried out to extract the G and K coal seams ...

Conventional mining vs surface miners - Mining Mirror Online

Nov 19, 2018· Mining operators are increasingly looking at alternative mining methods to the usual rip-and-stack or drill-and-blast operations to improve efficiencies and reduce costs. One of the new methods being advanced is to use a massive machine called a surface miner.

Blast design in opencast mining - SlideShare

Oct 12, 2017· 1. BLAST DESIGN IN OPENCAST MINES Presented by Gopal Karmakar (Id- 511214015 ) and Jagat kumar (Id- 511214014) Mining Engineering IIEST Shibpur. 2. Outline • Introduction • Drilling • Explosive used in opencast mine • Types of variables in blast design • Blasting patterns used in Indian opencast mines • Concept of optimum blasting ...

Blast Design for Controlling Some of Environmental ...

To meet the stated objectives, a field study was conducted on sandstone overburden formation of an opencast coal mine of BCCL, a subsidiary of Coal India Ltd. (CIL). The mine is being worked by mechanized drilling and deep hole blasting method. …

Blasting - DEQ Wyoming Department of Environmental Quality

Blasting. The Land Quality Division (LQD) regulates blasting in surface coal mining in Wyoming, and has a Memorandum of Understanding (MOU) with Wyoming Mine Inspector for all other mining operations in the state. The MOU can be downloaded by clicking HERE. The LQD's regulatory duties include issuing Blaster Certifications, review of shot ...

Blast Hole Drilling: The Basic Process | RPM Drilling

Aug 24, 2017· Blast hole Drilling is a technique used in mining whereby a hole is drilled into the surface of the rock, packed with explosive material, and detonated. The aim of this technique is to induce cracks in the inner geology of the surrounding rock, in order …

Applicability of Controlled Blasting in Large Opencast ...

Sep 26, 2018· The Jayant Opencast Project is a coal mine producing 15.5 mtpa of coal and 51.5 Mm 3 of overburden is being removed through drilling and blasting. The mine is currently operating with dragline as well as shovel-dumper combination.

Optimization of blasting parameters in opencast mines

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. Therefore to cut down the cost of production optimal fragmentation from properly designed blasting pattern has to be achieved. Proper adoption of drilling and blasting can contribute significantly ...

Optimization of Blasting Parameters in opencast Mines

CHAPTER 3: DRILLING AND BLASTING IN LARGE OPENCAST MINES 3.1 Drilling. 3.2 Blasting 3.3 Recent Advancement in Drilling and Blasting Techniques 9-22 23-29 30-40 CHAPTER 4: REVIEW OF OPTIMIZATION TECHNIQUES 4.1 General 4.2 Optimization of Mine Production System through Operation Research Techniques 41-45 45-48

Surface mining technology success | Engineer Live

Feb 23, 2021· At the open-cast mine, the company completely refrains from blasting and drilling – instead, BCML relies on the safe method of cutting the soft rock. Bairagi Sahu, associated vice president BCML, is highly satisfied with the seven machines: "When it comes to performance, the Wirtgen surface miners are simply the best.

A system-wide approach to minimize the operational cost of ...

Dec 12, 2018· The production cycle of open-cast coal mines generally includes drilling, blasting, loading, hauling and coal preparation activities. Individual optimization of these activities does not mean that the whole system is optimized. This paper proposes a cost model considering all activities in mining cycle and system-wide approach to minimize the total mining cost of bench production. Since the ...

Blasting Injuries in Surface Mining with Emphasis on ...

3.1. Blasting injuries in surface mining Forty-five fatal injuries were caused by explosives in surface mines between 1978 and 1998. Coal mines accounted for 19 (42.2%) of the fatalities; metal/nonmetal 26 (57.8 %). A total of 367 nonfatal injuries occurred during the same period, averaging about of 17.5 injuries per year.

Development and Application of Blast Casting Technique in ...

Blast casting is a high-efficiency technique applied in surface mines for overburden removal and results in stripping cost savings. According to ballistic theory and center-of-mass frame basic movement principles, key factors influencing blast casting effect were analyzed, which include bench height and mining panel width, inclined angle of blast holes, explosive unit consumption (EUC), delay ...

Opencast Working And Stripping Ratio » MiningPathsala

Jun 30, 2021· Process of mining in opencast mine :-Site Preparation. Drilling, Blasting or Cutting. Removal of Overburden. Extraction of coal/mineral by loading and its transportation. Reclamation of mines out land. Selective factor & Applicability conditions of opencast mining method :-The deposit should be close to the surface i.e, upto the depth of 300m ...

Surface Miners Optimize Coal Mining | PR | Wirtgen

At our mine, we sometimes cut up to 1,800 tons of coal per hour with one surface miner." In addition, eliminating the need for drilling and blasting and instead using surface mining technology results in a number of other benefits. First of all, it increases the safety of open-cast mining by eliminating the need to store and handle explosives.

7.3.2.9 Measures during Drilling and Blasting

7.3.2.9 Measures during Drilling and Blasting ... 7.4.2 Possible Hazards in Opencast Coal Mines Environmental Impact Assessment for the Proposed expansion of Surkha (North) Lignite Mine project (3 MTPA to 5 MTPA in ML area ... A minimum safe distance of 100‐m will be kept between the surface edge of the quarry and the nearest public building ...

Surface Miner | Wirtgen

Mining raw materials and cutting routes without drilling and blasting. Surface Miners can mine raw materials such as coal, gypsum, salt, phosphate, bauxite or lime in open-cast mines. They mine commodities selectively, ensuring a high quality and optimum exploitation of the deposit. Surface Miners are also used to cut routes or lower tunnel floors.

Blasting Techniques Used in Underground and Opencast Mines ...

Pull per round – 1.06 m. Coal yield/kg of explosive – 2.0 te (soligex) Coal yield/detonator – 0.9 te. One driller and two helpers drill 60-70 holes in a shift of 8 hours; one shot firer, 2 explosive carriers and 1 stemming material carrier constitute the blasting crew and fire nearly 60 shots in a shift of 8 hours.

Excavation, Drilling & Blasting Solutions - Divestec ...

Excavation, Drilling and Blasting Solutions. At Divestic Mining Services we provide three key engineered and innovative steps of mining solutions for all opencast mining operations. Our personnel is efficiently trained and competent to ensure maximum production, safety and efficiency.

Blast optimization at Kriel Colliery J r n a

Number 4 coal seam is extracted through surface and underground mining methods. The underground operation was started in 1975 and is currently divided into six mechanized sections. The opencast was commissioned in 1978 and consists of two dragline pits and a mini-pit. Project background General information on blasting operations

A Dynamics Model of Surface Coal Blasting Design Pattern

Drilling and blasting for overburd en and coal in open cast mines is estimated for 55% of total m ining costs in open ca st mining, for this r eason the planning and d esign of drilling and ...

Drilling Blasting In Opencast Iron Ore Mine

Evaluation Of Blasting Efficiency In Surface Mines Ethesis. Drilling and blasting are the major unit operations in opencast mining in spite of the best efforts to introduce mechanization in the opencast mines blasting continue to dominate the production beside the production in open cast mining blasting and vibration also cause environmental problem in bench blast design not only the technical ...

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