Mechanised Mining Drilling And Blasting

Drilling and Blasting | Technical Aspects of Mining ...

In small-scale surface mining including small quarries, jackhammers are in common use but in larger quarries and open pits, various types of mechanised rigs are employed. They drill holes of up to 350mm diameter and lengths up to 60m. Blasting in a mine generally occurs in two phases, primary blasting and secondary blasting.

Understanding charging and blasting ... - Mining Technology

Jan 07, 2020· In order to optimise the benefits of using these materials, the charging process must be mechanised correctly. This means they must meet the productivity and quality requirements of the mining industry as well as being safe and reliable. Even perfect drilling can be made ineffectual if charging is poor-quality or done incorrectly.

Drilling and blasting - Wikipedia

Drilling and blasting is the controlled use of explosives and other methods such as gas pressure blasting pyrotechnics, to break rock for excavation.It is practiced most often in mining, quarrying and civil engineering such as dam, tunnel or road construction.The result of rock blasting is often known as a rock cut.. Drilling and blasting currently utilizes many different varieties of ...

mechanised mining drilling and blasting

The rock mass is first fractured by drilling and blasting and then. MECHANISED MINE DEVELOPMENT UTILISING ROCK . 2.1 Drill and blast mechanised tunnelling and development 2.1.1 Drop raising Drop raising, also known as “longhole raise blasting” or “upsidedown raising”, is an excavation which is completely pre-drilled over its full length ...

BEST PRACTICES IN DRILL AND BLAST

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.

Blasting Techniques Used in Underground and Opencast …

The results obtained by solid blasting in one mine in Hazaribagh area (C.C.L.) are given below for guidance: ... The heavy blasting in mechanised quarried should take place during rest interval of workers. ... Throw blasting or cast blasting is described as the controlled placement of overburden by drilling and blasting to achieve the optimum ...

How mechanisation is breathing life into mining - Moneyweb

Jul 26, 2018· A position paper by the Minerals Council of SA, entitled People-Centred Modernisation in Mining, says mechanised drilling and blasting could extend the life of a low-grade mine …

Drilling Techniques for Mining Exploration - Equipment ...

Dec 13, 2018· It is the most common drilling technique used for mining exploration, particularly in South America and Australia. RC drilling is a form of percussion drilling, by which the rock is made to fail through the use of a piston that delivers rapid impacts to the drill stem, transferring energy to the drill …

Excavation methods: let’s compare TBM and Drill & Blast ...

The Drill & Blast technique is altogether different. As we outlined in this post, it is indeed a “conventional” method of excavation, and includes the following steps: 1. Drilling. 2. Explosive charging. 3. Blasting. 4. Ventilation. 5. Mucking and scaling . 6. Support: shotcrete and bolting. But how is one to know when to employ one method ...

Drilling and Blasting Services - Commercial & Residential ...

Welcome to Maine Drilling & Blasting, your trusted breed since 1966. Hard Work, Honesty and Quality of Services. These are the principles on which our company was founded, and which our people continue to bring to every project and job site...whether that’s a 75-mile pipeline, a quarry, or a single house foundation or swimming pool.

Understanding charging and blasting ... - Mining Technology

Jan 07, 2020· In order to optimise the benefits of using these materials, the charging process must be mechanised correctly. This means they must meet the productivity and quality requirements of the mining industry as well as being safe and reliable. Even perfect drilling can be made ineffectual if charging is poor-quality or done incorrectly.

Inverse box hole blasting at Kusasalethu Mine ...

Mar 29, 2010· We changed to a mechanised method, combining inverse box holes with drop raising. “This new mechanised method entails drilling the ore pass from the bottom of the rock upwards at an angle using an automatic drilling machine. This minimises the number of people physically involved in the drilling and blasting of the ore passes.”

Revolutionary drilling technology from Sandvik hits South ...

Jun 10, 2020· Mechanised raise drilling should however be considered a viable drilling application for raise boring in massive mine applications. Slot raises refer to relief holes within a stope, intended to provide void space (or burn-cuts) for blasting, thereby allow ‘expansion’ of the blasted rock and to improve fragmentation.

drilling and blasting Archives - International Mining

10th September 2019 Explosives and blasting, Mining consumables, Mining services Blasting, drilling and blasting, Fernanda Cardama, MAXAM Daniel Gleeson MAXAM has announced the launch of a new online channel to address customer needs worldwide as part of the company’s transformation process towards becoming a global technology leader present ...

Artisanal & Small Scale Mining Programs

Advanced Certificate In Drilling And Blasting. ... the understanding and effective management of mechanised mining systems is essential to realising the improved safety and productivity that modern equipment promises. The program looks at the fundamentals of mechanised mine design, the planning and management of mechanised operations ...

Impala Platinum: Defined by geology - African Mining Online

Dec 11, 2019· The bord and pillar mining method is employed and stoping widths average around 2m. Mining bords advance along the strike. The mining cycle involves mechanised support drilling and installation, mechanised face drilling, charging and blasting, and mechanised lashing onto a conveyor network to an underground bunker.

Blasting Techniques Used in Underground and Opencast …

The results obtained by solid blasting in one mine in Hazaribagh area (C.C.L.) are given below for guidance: ... The heavy blasting in mechanised quarried should take place during rest interval of workers. ... Throw blasting or cast blasting is described as the controlled placement of overburden by drilling and blasting to achieve the optimum ...

Excavation methods: let’s compare TBM and Drill & Blast ...

The Drill & Blast technique is altogether different. As we outlined in this post, it is indeed a “conventional” method of excavation, and includes the following steps: 1. Drilling. 2. Explosive charging. 3. Blasting. 4. Ventilation. 5. Mucking and scaling . 6. Support: shotcrete and bolting. But how is one to know when to employ one method ...

Blasting in Underground Coal Mines

Blasting in Coal Mines •Modern mechanised coal mines use machines and longwall mining methods to cut solid coal and convey the broken coal out of underground workings. •Continuous mining equipment has escalated coal production and introduced more effective and efficient coal handling facilities.

Optimization of Blasting Parameters in opencast Mines

designed blasting pattern has to be achieved. Proper adoption of drilling and blasting can contribute significantly towards profitability and therefore optimization of these parameters is essential. Introduction Rock breaking by drilling and blasting is the first phase of the production cycle in most of the mining …

Details of Circular issues by DGMS - Indian Mining Legislation

Conditions for use of heavy machinery/deep hole blasting. 36. 1972 Conditions for adopting a system of deep-hole blasting and/or working opencast mines with the help of heavy machinery for digging, excavation and removal of ore etc. under Reg.106(2) (b) of MMR 1961. 36 Tech.17. 1972 1977 Precautions with heavy earth moving machinery. Tech.3. 1981

Mechanised shaft-boring feasibility ... - Global Mining News

Herrenknecht offers a wide variety of other mechanised shaft boring machines for mining applications. ... compared with the conventional shaft-sinking process of drilling, blasting and hoisting ...

Optimized design of drilling and blasting operations in ...

Nov 01, 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 …

Blasting sequence at Goldcorp's Penasquito mine in ...

Aug 28, 2014· MineSight at Goldcorp’s Penasquito mine, Zacatecas, Mexico A blasting sequence at Goldcorp’s Penasquito silver-gold mine, where MineSight is integral to mine...

Impala Platinum: Defined by geology - African Mining Online

Dec 11, 2019· The bord and pillar mining method is employed and stoping widths average around 2m. Mining bords advance along the strike. The mining cycle involves mechanised support drilling and installation, mechanised face drilling, charging and blasting, and mechanised lashing onto a conveyor network to an underground bunker.

Blasting in Underground Coal Mines

Blasting in Coal Mines •Modern mechanised coal mines use machines and longwall mining methods to cut solid coal and convey the broken coal out of underground workings. •Continuous mining equipment has escalated coal production and introduced more effective and efficient coal handling facilities.

Optimized design of drilling and blasting operations in ...

Nov 01, 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 …

Mechanised shaft-boring feasibility ... - Global Mining News

Herrenknecht offers a wide variety of other mechanised shaft boring machines for mining applications. ... compared with the conventional shaft-sinking process of drilling, blasting and hoisting ...

MECHANISED MINE DEVELOPMENT UTILISING ROCK …

2.1 Drill and blast mechanised tunnelling and development 2.1.1 Drop raising Drop raising, also known as “longhole raise blasting” or “upsidedown raising”, is an excavation which is completely pre-drilled over its full length, then charged from the top, or bottom, and finally blasted from the bottom in practical

EXPLOSIVES & BLASTING

entire operation when drilling and blasting is optimised. “Mines are recognising that, while drilling. and blasting constitute a tiny portion of the . mining costs, they have a significant influence on the performance of all downstream operations, and to the impact on the environment,” Vicente Huélamo, Technical Services Director, told IM.

Techniques in Underground Mining

Up-hole drilling and blasting leaves a rough rock surface for the roof; after mucking out, its height will be about 7.0 m. Before miners are allowed to enter the area, the roof must be secured by trimming the roof contours with smooth-blasting and subsequent scaling of the loose rock.

Optimization of Blasting Parameters in opencast Mines

designed blasting pattern has to be achieved. Proper adoption of drilling and blasting can contribute significantly towards profitability and therefore optimization of these parameters is essential. Introduction Rock breaking by drilling and blasting is the first phase of the production cycle in most of the mining …

Blast Hole Drilling: The Basic Process | RPM Drilling

Blasting Techniques and Methods Used Technique #1 – Open mine blasting. Open pit mining refers to mining minerals from, as the name suggests, an open pit; or may refer to any similar shallow mining operation. Open mine blasting plays a pivotal role in determining the needs of all other mining activities to …

TUNNELS, SHAFT AND DEVELOPMENT HEADINGS BLAST …

blasting productivity. Drilling in the crumbly clinker zones was extremely difficult. Holes were drilled relatively fast but cleaning them and keeping them open was hard to do. Drilling in the clinker areas was similar to drilling into a loosely cemented gravel pile. As soon as the drill steel was removed, rock chunks would fall in, block the ...

Reliant Mining

We are a provider of comprehensive mechanised mining services. Our services cover the complete life cycle of a project from concept to completion. Mine Development. Mining tunneling such as Ramps, Drives, Galleries, Cross Cuts, Sub-Levels, Bypass, Windows, Cross Overs, Refuge Chamber, etc ... Drilling, charging and blasting services for long ...

Glossary of Blasting Terms - Mining and Blasting

ANFO is used as a blasting agent. ... Mine Safety and Health Administration (MSHA) - An agency of the Department of Labor concerned with promulgation and enforcement of health and safety regulations in the mining field. ... of boulders by placing a quantity of explosives against a rock or boulder without confining the explosives in a drill hole ...

mechanised mining Archives - International Mining

Mining companies on a global basis have been looking for a mechanised, continuous alternative to the labour intensive drill and blast batch process for decades. Several companies have tried to cater to this need, but no one technology has provided the ‘silver bullet’ as of yet.

Drill and Blast Fundamentals Masterclass – Trade Essential

Managing Director/Principal Consultant, FIRM Australia Our Trainer is a professional mining engineer and a highly experienced and knowledgable shotfirer/blaster with over 38years of experience in the drill and blast industry.After gaining first hand experience with explosives and blasting in an underground mine in Western Australia’s gold region in the early 1980’s, he then graduated from ...