ISO,CQC
Navigation Menu
Menu

drop raising in mining vcr method

underground mining methods drop raising - SicuPlus

drop raising in mining vcr method. Ore passes are used to drop mined ores Alimak is one of the most common ore pass raising and drop Underground Mining Methods The Design of Ore Pass , Chat Now; Blasting company breaks new ground with inverse drop raising.

Get Price
Metalliferous Mines Safety India | Metalliferous Mines ...

Metalliferous Mines Safety Week Copper Calling Drop Raising in Mining (VCR) Method. HINDUSTAN COPPER LIMITED. View the web links – Mines Safety .View the web link of a Copper Mining …

Get Price
Vertical crater retreat mining in the Sudbury Basin ...

VCR has gradually supplanted other mining methods until today about three- quarters of the Sudbury output is obtained using VCR. VERTICAL CRATER RETREAT MINING IN THE SUDBURY BASIN Vertical crater retreat mining History The vertical crater retreat mining method is based on C.W. Livingston's crater blasting theories and was developed by Inco and ...

Get Price
Under Ground Mechanized Mining Methods

Under ground mechanized mining methods. Drop Raising in Mining (VCR) Methods of Stopes ( Extraction of Ore). Hindustan Copper Limited has addressed the complex ‘raising’ operation in mining and developed and implemented Drop Raising techniques at 80 meters intervals which improved safety and led to faster and higher productivity.

Get Price
Underground mining (hard rock) - Wikipedia

Selective mining methods. Cut and fill mining is a method of short-hole mining used in steeply dipping or irregular ore zones, in particular where the hanging wall limits the use of long-hole methods. The ore is mined in horizontal or slightly inclined slices, and then filled with waste rock, sand or tailings

Get Price
My Experience with Khetri Copper Complex and Malanjkhand ...

My Experience with Khetri Copper Complex and Malanjkhand Copper Project Copper mining in India. Web site Copper Mining in India and Mining Methods Open Cast and Under Ground Mining by N G Nair . Information Technology in Mining Industry. Copper Mining India (1980 - 2009). ... Drop Raising in Mining (VCR) Method 7 years ago

Get Price
Rockpasses: a guide to excavation methodology

Unless the drop raise site is off the raise line, raising stops while this process is under way. Invert drop raising using down-the-hole hammer technology This method is very similar to conventional drop raising, but the availability of drill rigs using down-the-hole (DTH) hammers, both compressed air and water driven, has led to

Get Price
MECHANISED MINE DEVELOPMENT UTILISING ROCK …

Drop raising is commonly used world-wide in the development of rock and ventilation passes over a length of generally up to 60m in the vertical mode and around 15m in an almost flat mode (Refer graph 1 and 2 – Inclination and length matrix). Drop raising offers a safe method …

Get Price
Lecture 4: Underground Mining - SlideShare

 · Underground mining, Underground mining methods. Lecture 4: Underground Mining 1. Hassan Z. Harraz [email protected] 2011 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors.

Get Price
Improved technologies in longhole blast hole drilling ...

typical layouts and proposals, the drop raising technique and future applications. Similarly, the application of longhole blast hole drilling in tabular and massive orebodies is discussed with emphasis on the DTH application, advantages and disadvantages, limiting factors, typical layouts, the long hole stoping techniques and future applications.

Get Price
Ore Pass - Mining Fundamentals

 · Ore passes are developed using two conventional methods: the mechanical method, which uses a raised borer, and drill and blast methods. Alimak is one of the most common ore pass raising and drop-raising techniques. Ore passes need to be properly supported to ensure adequate safety.

Get Price
S A F E T Y B U L L E T I N No. 39

access is required to attach a reaming head at the top of the raise after drilling a pilot hole from the lower horizon, prior to reaming downward. Precautions are essentially similar to those required for raise drilling. Drop Raising (Long-Hole Winzing) This method requires top and bottom access (or at least void space to take the broken

Get Price
vertical crater retreat (VCR) – Mining and Blasting

 · vertical crater retreat (VCR) ... Vertical Crater Retreat (VCR) method. View this document on Scribd. Posted in blasting, explosives, mining | Tagged blasting in underground metal mines, underground metal mines, vertical crater retreat (VCR) | Leave a comment. ... DROP RAISING IN UNDERGROUND MINES;

Get Price
MECHANISED MINE DEVELOPMENT UTILISING ROCK …

Drop raising is commonly used world-wide in the development of rock and ventilation passes over a length of generally up to 60m in the vertical mode and around 15m in an almost flat mode (Refer graph 1 and 2 – Inclination and length matrix). Drop raising offers a safe method …

Get Price
underground mining methods drop raising

drop raising in mining vcr method - hometbmuebleriasmx. Though copper mining in Iran has a history of 2000 years, active industrial production of the In underground stoping, Vertical Crater Retreat (VCR) method is also used for bulk mining In these mines, drop raising techniques are used. Underground mining techniques

Get Price
Raise (mining) - Wikipedia

In underground mining, a raise refers to a vertical or inclined excavation that leads from one level, or drift, to another. A raise may also extend to surface. There are four excavation methods for raises: Conventional or open raise; Long-hole or drop raise; Alimak

Get Price
Raise (mining) - Wikipedia

In underground mining, a raise refers to a vertical or inclined excavation that leads from one level, or drift, to another. A raise may also extend to surface. There are four excavation methods for raises: Conventional or open raise; Long-hole or drop raise; Alimak

Get Price
Sub-level open stoping - QueensMineDesignWiki

Slot Raising. In conventional sublevel stoping where vertical rings or rows of holes are blasted it is necessary to have a slot to allow for rock expansion. It can be done as a slot raise driven by conventional raising methods, by raise boring, drop raising or crater blasting. The slot usually extends from the extraction level to the back of ...

Get Price
How Raise Drill Works - YouTube

 · Raise drilling can be used for holes and tunnels of up to 1100 meters in length, which makes this method very practical for many applications. How Machines Work https://engineers-channel.blogspot ...

Get Price
Metalliferous Mines Safety India | Metalliferous Mines ...

Metalliferous Mines Safety Week Copper Calling Drop Raising in Mining (VCR) Method. HINDUSTAN COPPER LIMITED. View the web links – Mines Safety .View the web link of a Copper Mining Engineer from India.

Get Price
S A F E T Y B U L L E T I N No. 39

access is required to attach a reaming head at the top of the raise after drilling a pilot hole from the lower horizon, prior to reaming downward. Precautions are essentially similar to those required for raise drilling. Drop Raising (Long-Hole Winzing) This method requires top and bottom access (or at least void space to take the broken

Get Price
Improved technologies in longhole blast hole drilling ...

typical layouts and proposals, the drop raising technique and future applications. Similarly, the application of longhole blast hole drilling in tabular and massive orebodies is discussed with emphasis on the DTH application, advantages and disadvantages, limiting factors, typical layouts, the long hole stoping techniques and future applications.

Get Price
Raise (mining) - Wikipedia

In underground mining, a raise refers to a vertical or inclined excavation that leads from one level, or drift, to another. A raise may also extend to surface. There are four excavation methods for raises: Conventional or open raise; Long-hole or drop raise; Alimak

Get Price
Description of mining methods (step by step)

Primary Mining Method Sequential grid down dip. Information. To deal with ground pressures, a V-shaped mining sequence is utilized. The main advantages of the sequential down dip method are the very low energy release rates, which make backfilling unnecessary, and the allowance for the physical separation of rock transport from men and materials.

Get Price
Raising methods in metal Mines - copper mining India (1980 ...

Raising methods in metal Mines. Raising is a regular operation in the development of metalliferous mines. It is associated with danger of accidents – due to fall of roof rock, inadequate ventilation resulting in poor visibility at the work site and uncomfortable working conditions. ... DROP RAISING IN MINING (VCR) METHOD The method of drop ...

Get Price
Training Centre Malanjkhand Copper Project

 · Mines Vocational training at Malanjkhand Malanjkhand Copper Project. Mines Safety Training, Basic Training , Refresher Training, Special Training under Mines Vocational training rules. ... Drop Raising in Mining (VCR) Method. Drop Raising in Mining - read more. First Class Mines Manager Certificate. Haridwar, Uttarakhand. Independence Day ...

Get Price
Study on the long-hole raising technique using one blast ...

This method is called vertical crater retreat (VCR) or vertical retreat mining (VRM) method. VCR method has been an established mining method being practiced in various mines all over the world. 8 An offshoot of this mining method is the VCR drop-raising technique that employs the same spherical crater charge technology as VCR method.9, 10 This ...

Get Price
Kadambur Family Ottapalam Kerala State. (Valluvanad ...

About Valluvanad - Culture and lifestyle - Valluvanad, ornamented by the famous river Bhaarathappuzha, erstwhile was a princely state in Kerala, which is located in the southern part of India. This land is an embellishment to Kerala for its culture and tradition. ... Drop Raising in Mining (VCR) Method 7 years ago KAIRALI MALANJKHAND ...

Get Price
Khetri Copper Complex

‘Khetri Copper Complex’ was my school where I learned the concepts of mining Technology, Practiced as a professional in Mining for 26 Years and perfected in the Art of Mining. Read More. KHETRI COPPER COMPLEX. View the web site of a mining engineer from India. ... Drop Raising in Mining (VCR) Method ...

Get Price
Techniques in Underground Mining

The raise climber is a vehicle that obviates ladder climbing and much of the difficulty of the manual method. This vehicle climbs the raise on a guide rail bolted to the rock and provides a robust working platform when the miner is drilling the round above. Very high raises can be excavated with the raise climber with safety much improved over ...

Get Price
Raise boring slots: a modern mining technique

Raise boring slots: a modern mining technique Raise boring has commonly been employed at different stages of mine construction for decades, most frequently as a means of drilling shafts, raises and ore chutes – but seldom (despite the endless possibilities) as a production method…until now, writes Jarko Salo, the managing director of

Get Price
www.ct.ufrgs.br

www.ct.ufrgs.br

Get Price
Contact Us With Phone
Crushing & Grinding Projects