coal mine blasting design - mobilistico.de

coal mine blasting design Determine blast design in an underground coal mine Performance criteria 21 Blast size and type of initiators to be used are determined in accordance with product required and industry best practice 22 Blast design is determined in accordance with …

(PDF) A Dynamics Model of Surface Coal Blasting Design …

The results of the model can be used to design surface coal blasting patterns following mine production planning and are based on the theory of the open cast blasting as well.

Surface Mine Blast Design and Consultant System

Surface Mine Blast Design and Consultant System D.E. SCHECK, ... i n surface coal mines vary with the characteristics of the formation, its depth, ... A blasting SURFACE MINE BLAST DES IGN AND CONSULTANT SYSTEM 18' 186 VIBRATION PROBLEM DIAGNOSIS

Blackwater coal blasts - YouTube

22-6-2008· Coal Blasting at Blackwater in 2008. Mine Visit-Underground Coal Mining/Nimcha UG/Eastern Coalfields Limited/Coal India Limited - Duration: 10:18. NITHIN KUMAR BIJLEE Recommended for you

Open-Pit Mine Planning and Design

Design engineering principles covered in this syllabus and applying these to real orebodies and optimising the mine designs. • Applying fundamental scientific knowledge, comprehension and understanding to predict the behaviour of mine layouts in terms of the different types of risks in real world mining environments.

Water Well Integrity-Coal Mine - Office of Surface Mining

Coal Mine Blasting Summary Report Prepared for June 28, 2002 Office of Surface Mining Reclamation and Enforcement Pittsburgh, Pennsylvania Daniel B. Stephens & Associates, Inc. 6020 Academy NE, Suite 100 • Albuquerque, New Mexico 87109

Case Study Cast Blasting - Orica

Four seams of coal ranging from 1 metre to more than 4.3 metres thick are mined individually. The coal from each seam is hauled by truck from the pit and stockpiled individually. The coal then is crushed, sorted and washed. Wilkie Creek mine has two active pits, namely A and B. The blasting activities take place in Pit B in a hard

Optimized design of drilling and blasting operations in ...

1-11-2018· 1. Introduction. Mining activity is mostly represented by these four main operations: drilling, blasting, loading and hauling. For a proper mine planning and design, all of these operations need to be carefully planned in such a manner that can prevent extra loads such as operating costs, environmental footprints, etc. Amongst these operations, drilling and blasting are known as the pioneers ...

Surface Mine Blasting - Office of Surface Mining

SURFACE MINE BLASTING Proceedings: Bureau of Mines Technology Transfer Seminar, Chicago, IL, April 15, 1987 Compiled by Staff, Bureau of Mines ABSTRACT The Bureau of Mines has sponsored a comprehensive research program to enhance the safe, effective, and efficient use of blasting technology by the mining industry.

Surface Mine Blasting - Office of Surface Mining

SURFACE MINE BLASTING Proceedings: Bureau of Mines Technology Transfer Seminar, Chicago, IL, April 15, 1987 Compiled by Staff, Bureau of Mines ABSTRACT The Bureau of Mines has sponsored a comprehensive research program to enhance the safe, effective, and efficient use of blasting technology by the mining industry.

(PDF) ROCK BLASTING FOR MINING - ResearchGate

Plan A Shows the multi-row blasting design. ... rule, open-pit and coal strip mines using larg e drills will drill presplit holes that rang e from 9 to 12-¼ . inches in diameter.

Productive Partnership – Advanced Blasting Technology at ...

Productive Partnership – Advanced Blasting Technology at Newlands Coal Mine Chris Batten 1, Les Willan 2, ... The initial process was to drill and blast down to the top of the coal seam or design RL, allowing sufficient standoff distances from the geological coal …

Optimization of Blasting Parameters in opencast Mines

National Institute of Technology Rourkela This is to certify that the thesis entitled “ Optimization of Blasting Parameters in Opencast Mines ” submitted by Sri Manmit Rout (Roll. No.: 10305019) and Sri Chinmay Kumar Parida (Roll. No.: 10305017), in fulfillment of the …

(PDF) Design of controlled blasting (pre-splitting) in ...

excessive flyrock, Coal, 99 ... control blasting program for an open pit iron mine in hard jointed rock is described. The objectives and mechanics of control blasting are discussed. Design and ...

Blasting in Mines - superpartha - Google Sites

Explosives Blasting in Mines: The only way to get coal or any ore or mineral out of the ground is to dig it out. Digging means drilling and blasting. Therefore, every mines, whether underground or opencast (surface) mines, drilling blasting activities are one of most important.

Optimisation of Overburden Blasts at Glencore Ulan Surface ...

mine until 2019 at 2.0 Mt of ROM coal per year. It is a single coal seam operation (thermal – high ash) where coal seam is 7.5 m thick with a relatively flat floor. Overburden thickness varies from 28 up to 65 m. Pre-stripping operations are required to guarantee a blasting bench of not more than 50 m height.

The use of air decks in production blasting in an open pit ...

The influence of air deck blasting on blast performance and blast economics and its feasibility has been studied in the production blasting of soft and medium strength sandstone overburden rocks in an open pit coal mine in India. The air deck blasting technique was very effective in soft and medium strength rocks. Its main effects resulted in reducing fines, in producing more uniform ...

Blast design in opencast mining - LinkedIn SlideShare

12-10-2017· 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 • Conclusion 3. Introduction • Drilling and blasting is the major unit operation. • Basic objective should be optimum fragmentation.

H BLASTING IN SURFACE EXCAVATION

Secondary blasting can be done by pop shooting (blockholing) and plaster shooting (mudcapping). Shaped charges are sometime used in secondary blasting, but this is much more expensive. Cast Blasting When overburden is removed from a coal or mineral deposit it is generally cast to a waste dump by draglines, or removed by loaders and trucks.

A novel powder factor based bench blast design method for ...

has yet to create a blast design method specifically tailored for large surface coal mine bench blasting. This research examines the typical scale of bench blasting at large surface coal mines, develops a new method of design tailored for these operations, and tests the new method against two widely accepted traditional blast design methods. Novel

Blasting in Mines - superpartha - Google Sites

Explosives Blasting in Mines: The only way to get coal or any ore or mineral out of the ground is to dig it out. Digging means drilling and blasting. Therefore, every mines, whether underground or opencast (surface) mines, drilling blasting activities are one of most important.

Application and Development of an Environmentally …

Drilling and blasting technology is one of the main methods for pressure relief in deep mining. The traditional method for blasting hole blockage with clay stemming has many problems, which include a large volume of transportation, excess loading time, and high labor intensity. An environmentally friendly blast hole plug was designed and developed.

Blasting - Safety Training PDF Files - Mine Safety and ...

This module presents information pertaining to initiation systems currently used in blasting operations at surface coal mines. 11.8 Mb: Blaster Training Module 3 This module presents recommended blast-design practices for surface mine and quarry blasting. 1.3 Mb: Blaster Training Module 4

Welcome to CMPDI

Central Mine Planning & Design Institute Limited (CMPDI) is a Government of India enterprise having its corporate headquarters at Ranchi in India. It is a fully owned subsidiary of Coal India Limited (CIL) and a Schedule-B company.

Blasting pattern design - 1 - Underground Mining -Theory ...

It is desirable that blasting pattern is simple in order to be easily drilled at site. Therefore, it is best practice to align boreholes in rows or to follow alignment as much as possible. After design it is necessary to determine basic blasting parameters as follows.

Explosives and blasting in underground coal mining

16-3-2015· Explosives and blasting in underground coal mining 1. EXPLOSIVES AND BLASTING IN UNDERGROUND COAL MINING M.S.S.S.SASHANK 113MN0482 2. INTRODUCTION All seams in underground coal mines are considered gassy, the degree of gassiness may vary from I to III.

Development and Application of Blast Casting Technique in ...

Presplit blasting used in surface coal mines is different from that of other open-pit mines. The best presplit results will be achieved from the surface coal mines with horizontal coal seams or having remarkable weakness plane in the contact position of coal and rock, as long as explosive charge is concentrated at the bottom of hole .

Cast Blast Design - MiningInfo

Cast blasting is a type of blast design which utilizes the surplus explosive energy to move overburden material across the pit. It is most frequently employed in coal mines to remove overburden from above the coal …

I UNDERGROUND BLASTING

Figure 13 is an example of blasting arrangement in breast stoping in a gold mine in South Africa. Capped safety fuse and igniter cord (burning speed of 18 s/m) make the carrier of the initiating system. The igniter cord is usually fired by an electric starter for igniter cord. Figure 13: Blasting arrangement in …