EVALUATION OF BORD AND PILLAR MINING SYSTEM IN .

of the Bord and Pillar working. This is achieved by addressing the following specific objectives. 1.1.1 Specific Objectives: The primary objective of this project is to: To review current pillar design practices in terms of pillar size, pillar shape, seam thickness, depth of mining, etc

• Authors: R C Nayak · S K DalaiAbout: Underground miningGet Price

EVALUATION OF BORD AND PILLAR MINING SYSTEM IN MCL .

of the Bord and Pillar working. This is achieved by addressing the following specific objectives. 1.1.1 Specific Objectives: The primary objective of this project is to: To review current pillar design practices in terms of pillar size, pillar shape, seam thickness, depth of mining, etc

• Authors: R C Nayak · S K DalaiAbout: Underground mining[PDF]Get Price

Is the bord and pillar system of mining on its last legs ...

Surely not. Bord and pillar can be applicable to the seams having more geological disturbances. You will surly agree that most of the seams in India is having disturbances at close intervals. For these disturbances bord and pillar system will exis...

Room and Pillar Mining | Safe & Efficient | Sunrise Coal

Room and pillar mining is a non-subsidence plan for a mine, preserving the precious farmland above. It is among the safest and one of the most ecologically-friendly approaches to mining coal today, creating a non-subsidence environment (no movement of land) and maintaining clean water standards.

Bord-and-pillar mining in inclined orebodies - SAIMM

All the advantages of bord-and-pillar mining make this method sound like the ultimate cost effective and efficient mining method, but there are major restrictions to its application, e.g.: The thickness of the orebody in relation to the machine dimensions The maximum dip angle the machines can handle efficiently and effectively

Research Report on the Coal Pillar Recovery under Deep .

University (WVU), a study of the recovery of coal pillars through retreat room-and-pillar mining practices in underground coal mines at depths greater than 1,500 ft. The study should examine the safety implications of retreat room-and-pillar mining practices, with emphasis on the impact of full or partial pillar extraction mining.

Hybrid Pick For Multipurpose Use And All Terrains ...

Advantages. Low Energy Profile (LEP) offers increased penetration, which reduces levels of dust and fines for a safer work environment Tapered design for added stability and strength means longer service life and reduced downtime Carbide provides a longer service life as it is less prone to fracture and has higher wear resistance.

Room-and-pillar mining | coal mining | Britannica

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. In coal mining: Development of continuous mining .loading, developed in .

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

Bord and pillar mining. Next. 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 collapse in a controlled way as miners retreated to the exit.

Bord And Pillar Mining Method - greenrevolution

bord and pillar mining method. while in Bord & Pillar, Room and pillar mining is one of the oldest mining methods. Early room and pillar mines were developed more or less at random, Read more. ... All the advantages of bord-and-pillar mining make this method sound ... Figure 1—Cross section through bord-and-pillars.

une, 2018 Future of Bulk Production from Underground Coal ...

The first fully mechanised Bord and pillar system using continuous miner technology started its operation in 2002 at Chirimiri, Anjun hill mine at SECL. Since beginning the system has achieved over 40000 tons/ month during development and 50000 Tons/month during depillaring. After that continuous miner were

What Is a Room and Pillar? (with picture) - wisegeek

Room and pillar is the oldest type of mining technique. Miners choose room and pillar mining because it is fast, simple, and requires very little equipment. Despite these advantages, this mining technique also poses several challenges for miners. One of the biggest problems lies in .

Bord And Pillar Mining Method - greenrevolution

bord and pillar mining method. while in Bord & Pillar, Room and pillar mining is one of the oldest mining methods. Early room and pillar mines were developed more or less at random, Read more. ... All the advantages of bord-and-pillar mining make this method sound ... Figure 1—Cross section through bord-and-pillars.

Drilling and blasting - Wikipedia

Drilling and blasting. It is practiced most often in mining, quarrying and civil engineering such as dam or road construction. The result of rock blasting is often known as a rock cut . Drilling and blasting currently utilizes many different varieties of explosives with different compositions and performance properties.

Mining Funda: Bord and Pillar method of Mining

Bord and pillar mining method comprises two phases i.e DEVELOPMENT and DEPILLARING. Sometimes both these phases proceeds simultaneously. In development, pillars are formed by driving a network of galleries, of which one set is generally parallel to the dip and the other set is parallel to the strike cutting the former at right angles.

Coal Mining Methods - emfi.mines.edu

Advantages of Longwall Mining. Longwall mining is a very efficient coal producing technique. Longwall productivity is potentially higher than that of room-and-pillar mining, because longwall mining is basically a continuous operation requiring fewer workers and allowing a high rate of production to be sustained.

Continuous miner cutting tools - mining.dev.ibp.

We offer a wide range of continuous miner cutting tools for bord and pillar mining that increases your productivity in the most demanding conditions. Extremely productive and reliable, they are used for full-scale production in bord-and-pillar...

NSW Mining Methods - NSW Mining

Bord-and-pillar: Bord-and-pillar, or room-and-pillar, is the oldest underground mining technique and was common in NSW before longwall mining began in the 1960s. This method uses a grid of tunnels and involves progressively cutting panels into the coal seam whilst leaving behind pillars of .

Bord & Pillar Method | Mining | Coal - Scribd

Advantages of bord and pillar mining method. The major advantages of b/p mining are The area to be immediately worked is proved. Therefore, initial planning may be modified to deal with geological disturbances like faults and intrusions without serious loss of output.

Room and Pillar Mining | Safe & Efficient | Sunrise Coal

Room and Pillar Mining is Safe, Efficient & Environmentally Friendly. Room and pillar mining is a non-subsidence plan for a mine, preserving the precious farmland above. It is among the safest and one of the most ecologically-friendly approaches to mining coal today, creating a non-subsidence environment (no movement of land) and maintaining clean water standards.

Board & Pillar? | Coal, Colliery and Mining Forum.

Aug 16, 2013 · All main roads are developed as Bord and Pillar method, usually several parallel roads with cut through's every so many yards spacings. Some of the collieries in the companies group I worked for in NSW had pretty high OMS rates, the one I worked at was under the Sydney water catchment area so we weren't allowed longwalls in that area, but the coal was high quality coking coal.