Longwall Punch Mining System

Punch Longwall Mining | Introduction | underground COAL

punch longwall mining Punch Longwall Mining This is a rather specialized type of mining which is only applicable where a seam is exposed at the highwall of an open cut mine which has reached the economic limit for open cut mining.

punch mining system - perkinspreschool

Aug 21, 2018 · Punch Longwall Mining Introduction underground COAL. The term punch mining is only applied where a series of such longwall blocks The Ultimate Highwall Mining System an alternative to longwall punch mining.

PUNCH LONGWALL MINING – Mining Science and Technology

The features of this system of mining include: The system requires no transport, conveyor drifts, shafts, complex ventilation systems or main headings as in conventional underground mining methods, hence this benefit provides cheaper, faster, simpler access and commencement of longwall mining.

Punch Multi-slice Longwall Mining System for Thick Coal ...

Key words: Punch multi-slice longwall mining, thick coal seam, weak strata, stability of highwall. 1. Introduction The surface mining method is generally considered to be more advantageous than the underground method, especially in recovery, grade control, production capacity, economics, flexibility, safety and working environments.

Longwall Mining Overview | Introduction | underground COAL

Basic longwall mining principle simplified (retreating longwall in this case) A coal haulage system is installed across the face, on modern faces an "armoured face conveyor or AFC". The roadways which form the sides of the block are referred to as "gate roads".

Highwall mining systems at surface coal mines in Indonesia ...

The punch longwall mining system for open cut mining helps in coal recovery and in understanding of the underground mining in Indonesia but due to high cost associated with it and the geological ...

SYSTEMS – Mining Science and Technology

The type of ventilation system used in a longwall mine is dependant upon the conditions found at each mine. The most influencial factor in the choice of ventilation system is the amount of gas that is present in the mine atmosphere.

Highwall Stability due to Punch Mining at Opencut Coal ...

The punch longwall mining system for open cut mining helps in coal recovery and in understanding of the underground mining in Indonesia but due to high cost associated with it and the geological ...

Equipment – Mining Science and Technology - LongWall

Equipment 1 Comment A pantechnicon is a train of sleds carrying the services to the longwall face. It is generally located on the maingate road, along the belt conveyor.

Longwall Systems - Underground Mining | Komatsu Mining Corp.

Longwall systems Joy complete longwall systems represent the ultimate solution for high-production longwall mining. Joy incorporates best-in-breed shearers, roof supports, face conveyors, stageloaders, crushers, and mobile belt tail pieces to deliver a complete longwall system that is in a class of its own.

Punch Multi-slice Longwall Mining System for Thick Coal ...

From these backgrounds, this paper proposed a punch multi-slice mining system with stowing for thick coal seam under weak geological conditions and discussed its applicability and suitable design by means of numerical analysis.

Surface assisted continuous underground mining

longwall punch mining or wall-to-wall mining is obvious. There are several clear operating advantages to operating a longwall in this way and where highwalls are available, the best economic decision will generally favor planning a direct approach.

Longwall Top Coal Caving ~ Mining Engineering Science

May 26, 2017 · Longwall top coal caving (LTCC) is a special type of longwall mining applicable to very thick seams (greater than 4.5m) where good quality coal is being left because "conventional" longwall equipment has not yet been designed to operate successfully beyond around 5m mining …

Highwall Stability due to Punch Mining at Opencut Coal ...

The punch longwall mining system for open cut mining helps in coal recovery and in understanding of the underground mining in Indonesia but due to high cost associated with it and the geological ...

Hydraulic Legs - LongWall

The forces required at the support line to control strata deformation are supplied by a set of hydraulic legs acting between the base and roof canopy. The hydraulic pressure to the legs are supplied from a power pack system which could be located remote from the longwall face or mounted on a Pantechnicon at the main gate end of the longwall face.

punch mining system and cuttingmining process

Mining industry of Nigeria The mining of minerals in Nigeria , exploit, process, and supply iron ore concentrate to the Ajaokuta Steel Company (ASCL) . Live Chat; Punch Mining System - , The Punch Mining System serves the requirement to mine underground , Punch Mining Operation The Cutting/Mining Process is performed by a continuous bolter ...

Viewpoint Mining Magazine - Longwall Top-Coal Caving

Broadmeadows uses the punch longwall mining method, accessing coal seams directly from the pit created by the original surface mine. While longwall operations began in 2005, Broadmeadows did not adopt LTCC technology until 2013.

Effect of Punch Longwall Retreat on Highwall Stability

Luke Clarkson, Effect of Punch Longwall Retreat on Highwall Stability, in Naj Aziz and Bob Kininmonth (eds.), Proceedings of the 16th Coal Operators' Conference, Mining Engineering, University of Wollongong, 10-12 February 2016, 509-521.

Product Overview - Komatsu Mining Corp.

Longwall Systems 4 Komatsu Mining Corp. Group Komatsu Mining Corp. Group 5 Faceboss RS20s The Faceboss RS20s system requires no special gate-end computer for control and is the fastest and most powerful shield control system ever supplied by Komatsu.

Cline Mining Corporation • Projects • Mining Terms

Longwall mining is done under movable roof supports that are advanced as the bed is cut. The roof in the mined-out area is allowed to fall as the mining advances. Open Pit Mining The common form of mining in Western Canada involves specialized fleets of mobile equipment to drill, blast, load and haul large volumes of rock and coal.

Longwall mining - Wikipedia

Longwall mining is a form of underground coal mining where a long wall of coal is mined in a single slice (typically 0.6 – 1.0 m thick). The longwall panel (the block of coal that is being mined) is typically 3 – 4 km long and 250 – 400 m wide.

Longwall Punch Mining System - Crusher USA

Longwall mining is a type of underground mining used for the extraction of coal and the information in this presentation will further explain this type of mining. » Contact us. coal mines company in bhilai india - Seo Test. Longwall Punch Mining System in Bhilai, India - Crusher ...


-Retreat punch longwall panels were typically -320 m wide by 2100 m long-4.1 –4.8 m seam section Beltana Coal Mine, New South Wales, Australia Here Punch Longwall mining is the means of secondary extraction of coal CASESTUDY IN AUSTRALIA

Longwall Mining - SlideShare

INDIAN LONGWALL - PAST EXPERIENCE: - Introduction of advanced technology system in Indian coal mining industry marked a major step with the installation of first mechanized Longwall Powered support face at Moonidih in August 1978.

JOY Longwall Mining System - YouTube

Mar 09, 2011 · Brief animation of a Joy longwall system in operation underground.

Longwall Mining Equipment - Adobe

allows mining of seams with an inclination of up to 60º. Cat offers plows systems as complete and fully-automated or semi-automated versions. Cat plows undergo constant development to meet special requirements for our customers. High-level Automation We have been designing and building longwall plows since 1941 – and things have come a long way.

Principles of Longwall Mining - YouTube

Sep 10, 2012 · It includes an explanation of the different products/key components of a longwall mining system (longwall shearer, automated plow system, AFC face conveyor, line pans, CST drive system…

longwall mining technique - rbeventservices.eu

Punch Longwall Mining; Figure opposite shows a general layout of punch longwall mining. The aim of this method is to mine coal form the highwall of an open cut operation, in which the stripping ratio is far outweighs the production cost of coal mined.

Longwall mining - definition of Longwall mining by The ...

The final open cut strip will provide access for the underground operation including highwall, and punch longwall mining of the seams.

longwall mining equipment - cmschool

Longwall mining. In the longwall system the ore body is divided into rectangular panels or blocks. In each panel two or more parallel drifts (for ventilation and ore transport) are driven along the opposite long sides to provide access, and at the end of the panel a single crosscut drift is driven to connect the two sides. ... Augur (or Punch ...

Complete Longwall Systems - Mining Connection

Complete Longwall Systems Joy offers a complete range of longwall equipment to suit the needs of mining operations worldwide. Joy is globally recognized as a leading manufacturer of complete longwall systems. Joy provides its customers witha single, accountable source for shearers, roof supports, face conveyors, stageloaders, crushers and mobile

Floorplan | Longwall USA

609 / Longwall Associates 619 / Seetech 627 / Syntron Material Handling. 633 / Hauhinco 711 / Komatsu Mining Systems. 731 / Richwood. 735 / Miller Contracting. 741 / Cat Global Mining. 751 / Intermountain Electronics.

Austdac Longwall Mining System – Austdac

The Austdac Longwall communication and monitoring system is adaptable to meet any customer design criteria. Our system has been designed and tested to suit your longwall, providing better solutions for your environment and layout. Our emergency stop system is internationally accredited to SIL3 safety rating by TÜV.

Cat | Underground - Longwall Mining Equipment | Caterpillar

Underground - Longwall. Cat® customized systems for longwall mining range from hydraulic roof supports and automated plow systems to shearers, face conveyors and roof support carriers.

Articles citations with the tag: LONGWALL mining

Reports on the signing of a contract by Xstrata Coal with Joy Mining to install a longwall system at its Ulan underground coal mine in New South Wales. Cost of the longwall system; Percentage owned by Xstrata Coal in Ulan Coal Mines; Importance of the contract signing; Expected date of... DBT Presents Longwall Top Coal Caving.

Longwall method | coal mining | Britannica

Other articles where Longwall method is discussed: mining: Longwall mining: In the longwall system the ore body is divided into rectangular panels or blocks. In each panel two or more parallel drifts (for ventilation and ore transport) are driven along the opposite long …

Longwall :: AFC

Longwall Associates head and tail drives are unmatched in engineering prowess. Guaranteed to effectively and efficiently deliver coal to your stageloader while maximizing cutting speed and minimizing horsepower consumption, Longwall Associates head drives incorporate exclusive designs with the reliability you have come to expect from our company.

Application of highwall mining system in weak geological ...

Therefore, study of highwall mining system application in Indonesia is needed in order to increase the recovery rate of coal mining in Indonesia. This paper described the characteristics of the highwall mining system and discussed the appropriate highwall mining system application in weak geological condition, Indonesia.