bord and pillar mining working photos

bord and pillar mining working photos
bord and pillar mining working photos

Room and pillar variant of breast stoping is a mining system in which the mined material is extracted across a horizontal plane creating horizontal arrays of rooms and pillars To do this rooms of ore are dug out while pillars of untouched material are left to support the roof overburden Calculating the size shape and position of pillars is a complicated procedure and is an area of

Kajora Area - Wikipedia
Kajora Area - Wikipedia

Mining Sequences for Continuous Miners Dr Joseph C Hirschi Project Manager In room-and-pillar mining Identifying Optimal Mining Sequences for Continuous Miner Joseph C Hirschi Project Manager Illinois Clean Coal Institute 2012 Illinois Mining Institute

Bord And Pillar Mining Equipment - ilristorantelatorre it
Bord And Pillar Mining Equipment - ilristorantelatorre it

The mine is degree-II gassy mine As of 2015 16 the Real Kajora 5 6 pit unit was working Sonachora R-VIIIB seam by manual bord and pillar mining method Depillaring with stowing is going on The 7 8 pit unit was also working Sonachora seam R-VIIIB by semi-mechanized bord and pillar method with SDL Only development work was going on

The Duncan Method of Partial Pillar Extraction at Tasman …
The Duncan Method of Partial Pillar Extraction at Tasman …

towards high productivity under a claystone roof - underground COAL Feb 15 2001 their history to find an economic mining method under these initially a Bord and Pillar operation and when the reserves of the inspector commented that the bord was about 22 ft 6 7m wide and the working height of the coal was to fret and consequent rib and roof falls occurred see Photos 1 2

Board Pillar Coal Colliery and Mining Forum
Board Pillar Coal Colliery and Mining Forum

Coal Mining Methods Underground Mining Longwall Room and Pillar Mining Longwall mining and room-and-pillar mining are the two basic methods of mining coal underground with room-and-pillar being the Working under the movable roof supports the shearing machine rides on the conveyor as it

Pick-and-shovel mining Coal and coal mining Te Ara
Pick-and-shovel mining Coal and coal mining Te Ara

This is to certify that the thesis entitled ―Design of support system for bord and pillar workings‖ submitted by Mr Manoj Kumar Biswal in partial fulfillment of the requirement for the award of Bachelor of Technology Degree in Mining Engineering at the National Institute of …

Bord And Pillar Mining India - Henan Mining Machinery and
Bord And Pillar Mining India - Henan Mining Machinery and

INTRODUCTION In India about 98 of underground output of coal is obtained by Bord and Pillar method and barely about 2 by longwall methods The other countries where Bord and Pillar method predominates are Australia The USA and South Africa The key to the successful Bord and Pillar mining is selecting the optimum pillar size

NSW Mining Methods - NSW Mining
NSW Mining Methods - NSW Mining

bord and pillar mining working photos 201342 in underground coal mining bord and pillar is the method of working mining equipment to gold ore More Info Live Chat bathopele mine rustenburg technology mining method underground location bathopele mine geology mining activity at bathopele involves the bord and pillar mining layout in

EVALUATION OF BORD AND PILLAR MINING SYSTEM IN …
EVALUATION OF BORD AND PILLAR MINING SYSTEM IN …

mining‖ and ―pillar recovery‖ will also be used interchangeably When room-and- pillar methods are employed large blocks of coal in the form of pillars are initially left in place

Room-and-pillar mining coal mining Britannica com
Room-and-pillar mining coal mining Britannica com

This diagram shows the traditional method of bord and pillar mining Miners first extracted coal along roadways or bords while the coal in between the bords acted as pillars holding up the roof Then the outer pillars were mined leaving the roof to

bord and pillar coal mining ppt - ypma-ict nl
bord and pillar coal mining ppt - ypma-ict nl

Bord And Pillar Mining Working Photos - … Bord And Pillar Mining Working Photos Bord and pillar mining The design of coal pillars in bord and pillar mines is based on the concept of a safety factor Contact Supplier pillar and stall mining method Grinding Mill China

Board Pillar Coal Colliery and Mining Forum
Board Pillar Coal Colliery and Mining Forum

offers a wide range of extremely productive and reliable continuous miner cutting tools for bord and pillar mining Cutting tools for roadheaders and miners has a wide selection of highly productive conical mining tools for roadway development …

Cutting and bolting tools -  Mining Rock Technology
Cutting and bolting tools - Mining Rock Technology

Apr 17 2015· I never saw Bord and Pillar during my apprenticeship with the NCB Jim All roads were either steel arches one had bolts as a trial and one section of a main road was backripped and had cambered bars notched into the sides of the walls at roof level seemed to work too

Research Report on the Coal Pillar Recovery under Deep …
Research Report on the Coal Pillar Recovery under Deep …

working process of rock crusher for gold mining bord and pillar mining india china metallurgy mining bord and pillar mining working photos bord and pillar mining beltconveyers net Bord and pillar mining and pillar Room and pillar Room and pillar is also known as bord and…

Coal Pillar Design Criteria for Surface Protection
Coal Pillar Design Criteria for Surface Protection

Aug 16 2013· Pillar width length and bord width are worked out according to geology ie seam stresses and seam depth Rock mechanics and the Mine Manager work those out according to local conditions ie depth from the surface and type of mineral

Room and pillar mining - Wikipedia
Room and pillar mining - Wikipedia

Feb 27 2016· This method is sometimes called room-and-pillar mining This can be better understand with the help of follwing fig 6 APPLICABILITY OF BORD AND PILLAR METHOD The Bord and Pillar method is adopted for working 1 A seam thicker than 1 5 m 2 A seam free from stone or dirt bands

Design of Bord and Pillar method in coal mines - SlideShare
Design of Bord and Pillar method in coal mines - SlideShare

These West Coast miners from the end of the 19th century pause in their labours The traditional technique for extracting coal which miners brought from Britain depended entirely on muscle power Miners chopped out coal with picks and then shovelled it into waiting carts In the sound file a

bord and pillar coal mining ppt - sinaforchi be
bord and pillar coal mining ppt - sinaforchi be

Bord and Pillar mining a system of coal mining in which tunnels are driven in a checkerboard pattern with massive square pillars between them These are gradually cut away as the work proceeds Brownfield exploration exploration work that s done close to or at existing mines Bulk commodity

Board Pillar Coal Colliery and Mining Forum
Board Pillar Coal Colliery and Mining Forum

Jul 29 2016· Bord and pillar is an underground mining method for extracting coal from belowground of earth Various machinery combinations are used for extracting One of the combination is the continuous

Toward Pillar Design to Prevent Collapse of Room-and
Toward Pillar Design to Prevent Collapse of Room-and

3 1 Overall working of bord and pillar method of mining using Continuous Miner The bord and pillar method of mining is the older and traditional method of underground coal mining This method is sometimes called room-and-pillar mining Coal is removed from the working faces as the rooms are advanced Cross-cuts

Design of Bord and Pillar method in coal mines
Design of Bord and Pillar method in coal mines

Bord-and-pillar definition is - of or relating to a system of coal mining in which tunnels are driven in a checkerboard pattern having massive square pillars between them which are gradually cut away as the work …

Bord and pillar mining Coal and coal mining Te Ara
Bord and pillar mining Coal and coal mining Te Ara

Photo Search Photo Galleries New Photos Today New Photos Yesterday Members Photo Galleries Past Photo of the Day Gallery Definition of bord-and-pillar method A system of mining in which the distinguishing feature is the winning of less than 50 coal on the first working

Pillar Extraction using Continuous Miners Introduction
Pillar Extraction using Continuous Miners Introduction

Coal Pillar Design Criteria for Surface Protection D Hill1 ABSTRACT Large areas of ground are permanently supported on coal pillars both in extensive old workings and current drivages in active mining operations Continued growth of civil infrastructure is resulting in more surface development above old bord and pillar mines and an increased

DESIGN OF SUPPORT SYSTEM FOR BORD AND PILLAR …
DESIGN OF SUPPORT SYSTEM FOR BORD AND PILLAR …

PILLAR EXTRACTION USING CONTINUOUS MINERS Overview Now that longwall equipment has been developed to a stage where it is able to cope with most conditions satisfactorily longwall mining is the most widely used method of secondary extraction However there are still mines and occasions where longwall mining is not suitable e g

Bord-and-pillar mining explained Illawarra Mercury
Bord-and-pillar mining explained Illawarra Mercury

In mining Room-and-pillar mining The most common mining system is room-and-pillar In this system a series of parallel drifts are driven with connections made between these drifts at regular intervals When the distance between connecting drifts is the same as that between the parallel drifts then a… Read More

Principles of Room Pillar Mining - YouTube
Principles of Room Pillar Mining - YouTube

Sep 10 2012· This video provides a basic description of the room pillar mining method for extracting coal underground It includes an explanation of the different products working together in a room pillar

bord and pillar coal mining ppt - bondhumahal in
bord and pillar coal mining ppt - bondhumahal in

Bord And Pillar Mining Working Photos - The key to successful room and pillar mining is in the selection of the the size of both room and pillars are kept almost equal while in Bord Pillar pillar size is Read more coal mining Room-and-pillar mining Encyclopedia Britannica

Coal Mining Methods - EMFI
Coal Mining Methods - EMFI

Jul 29 2016· Bord and pillar is an underground mining method for extracting coal from belowground of earth Various machinery combinations are used for extracting It has a working …

bord and pillar mining working photos - ellul nl
bord and pillar mining working photos - ellul nl

2011 Underground Coal Operators Conference The AusIMM Illawarra Branch 8 10 11 February 2011 THE DUNCAN METHOD OF PARTIAL PILLAR EXTRACTION AT TASMAN MINE Kent McTyer1 and Tony Sutherland2 ABSTRACT Mining commenced at Tasman Mine in late 2006 The current method of mining is bord and

Bord and Pillar mining by continuous Miner in HINDI - YouTube
Bord and Pillar mining by continuous Miner in HINDI - YouTube

This is to certify that the thesis entitled EVALUATION OF BORD AND PILLAR MINING SYSTEM IN MCL COAL MINES submitted by Sri Ram chandra Nayak Roll No 10605015 The key to the successful Bord and Pillar mining is selecting the optimum pillar size of the Bord and Pillar working This is achieved by addressing the following