shaft design calculation in mining

shaft design calculation in mining

DESIGN OF MINE SHAFT ELEVATOR - mech-ing

2014-3-13 · When it comes to design of a mine shaft, there are two options: circular shafts and horizontal shafts (Figure 1, Figure 2). Circular shaft is the most commonly used one. If the shaft should be deep and shaft diameter is supposed to be more than 4.5 meters, circular shafts are the best choice. Because of their circular shape, they are easier by the usage. Rectangular shafts, which use timber supports, are still commonly used [13-14]. Timber supports, bricks, and concrete blocks are common types of shaft liners used in the shafts

A METHODOLOGY FOR LINING DESIGN OF CIRCULAR

2013-3-1 · A METHODOLOGY FOR LINING DESIGN OF CIRCULAR MINE SHAFTS IN DIFFERENT ROCK MASSES Güler, Erdoan M.Sc., Department of Mining Engineering Supervisor: Asst. Prof. Dr. Hasan Öztürk January 2013, 72 pages The objective of this thesis is to predict lining thickness inside circular mine shafts. A numerical study

ME 343: Mechanical Design-3

2017-10-8 · Shaft design based on strengthShaft design based on strength Ai l t ( ti )Axial stress (continue): 1 αλ==≤,( /)L r 115 2,( /) 5 1 0.0044 yc 115 s λ λ αλ − => 2, π nE n = 1.0 for hinged end; n = 2.25 for fixed end n = 1.6 for ends ppy , g,artly restrained, as in bearing , L = shaft length syc = yypield stress in compression Lecture1 ...

Md-17 Shaft Design - University of Northern Iowa

2007-8-15 · 1 August 15, 2007 1 17. Shaft Design Objectives • Compute forces acting on shafts from gears, pulleys, and sprockets. • Find bending moments from gears, pulleys, or sprockets that are transmitting loads to or from other devices. • Determine torque in shafts from gears, pulleys, sprockets, clutches, and couplings. • Compare combined stresses to suitable allowable stresses,

Design of Shafts - IIT Bombay

2019-10-6 · Design of Shafts 1. ME 423: Machine Design Instructor: RameshSingh Introduction •Torque and Power Transmission •Most of rotary prime movers either motors or turbines use shaft to transfer the power •Bearings are required for support •Shaft failure analysis is critical 2.

ANALYSIS AND DESIGN OF CIRCULAR SHAFTS USING

2021-3-28 · concerns and should be of interest to those involved in the design and construction of vertical shafts. Keywords: Diaphragm Wall, Compression Ring, Soil-Structure Interaction, Circular Shaft, Hole Excavation, Sloping Bedrock, Surcharge Effects . 7 Table of Contents

Shaft Design for Stress : Stress Analysis

2014-2-26 · Proceed with the next phase of the design. in which a suitable material is appropriate for section Of the Shaft ed. based on providing sufficient fatigue and static Stress capacity for infinite life of the shaft. with minimum safety factors of 1.5. radiol forces transmitted through the gears to the shaft to be determined as — —39m N follows.

Shaft Design | Material , Types , How to Design Shaft

2021-8-3 · DESIGN OF SHAFT FOR RIGIDITY: In many cases, the shaft is to be designed from a rigidity point of view. For a shaft subjected twisting moment, the angle

Sinking and equipping inclined shafts of more than 60 ...

2020-10-28 · shafts are more often put down in soft rock and pass through faulted zones, whereas, the vertical shafts are usually in the fir.m wall rock. However, in. any. well con­ structed shaft,where the walls are reasonably firm, shaft maintenance is a relatively small item of the mining expense and the lower first cost of the inclined shaft might easily

Shaft construction - QueensMineDesignWiki

2019-6-28 · Circular shafts. The most commonly used shaft design in modern day mining is of circular or elliptical shape. In moderate to high production, larger working areas are necessary to provide adequate support. Circular shaft designs are typically chosen when the shaft

Rock Mechanics Study of Shaft Stability and Pillar Mining ...

2012-8-30 · A U.S. Bureau of Mines case study of pillar recovery in high-grade ore near the Ross shaft at the Homestake Mine, Lead, SD, has demonstrated the usefulness of the finite-element method for evaluating shaft pillar mining plans and shaft stability. In this study, borehole extensometers and other instruments were installed to provide data

Md-17 Shaft Design - University of Northern Iowa

2007-8-15 · 1 August 15, 2007 1 17. Shaft Design Objectives • Compute forces acting on shafts from gears, pulleys, and sprockets. • Find bending moments from gears, pulleys, or sprockets that are transmitting loads to or from other devices. • Determine torque in shafts from gears, pulleys, sprockets, clutches, and couplings. • Compare combined stresses to suitable allowable stresses,

ME 343: Mechanical Design-3

2017-10-8 · Shaft design based on strengthShaft design based on strength Ai l t ( ti )Axial stress (continue): 1 αλ==≤,( /)L r 115 2,( /) 5 1 0.0044 yc 115 s λ λ αλ − => 2, π nE n = 1.0 for hinged end; n = 2.25 for fixed end n = 1.6 for ends ppy , g,artly restrained, as in bearing , L = shaft length syc = yypield stress in compression Lecture1 ...

Shaft Design for Stress : Stress Analysis

2014-2-26 · Proceed with the next phase of the design. in which a suitable material is appropriate for section Of the Shaft ed. based on providing sufficient fatigue and static Stress capacity for infinite life of the shaft. with minimum safety factors of 1.5. radiol forces transmitted through the gears to the shaft to be determined as — —39m N follows.

Sinking and equipping inclined shafts of more than 60 ...

2020-10-28 · shafts are more often put down in soft rock and pass through faulted zones, whereas, the vertical shafts are usually in the fir.m wall rock. However, in. any. well con­ structed shaft,where the walls are reasonably firm, shaft maintenance is a relatively small item of the mining expense and the lower first cost of the inclined shaft might easily

Pillar design - QueensMineDesignWiki

2019-6-28 · The edge of the shaft pillar will be highly stressed as it is an abutment to mining, but the interior is mostly at a uniformly lower stress level. The following graph is based on the previous one, in which the constant interior stress magnitude region is used as a design constraint.

Mechanics and Machine Design, Equations and Calculators ...

2021-8-29 · Mechanics and Machine Design, Equations and Calculators, Design of Load Carrying Shaft With One Pulley & Supported by two Bearings, Flywheel Effect or Polar Moment of Inertia, Lifting Boom, Davits Application and Design Equations, Large and Small Diameter Lifting Pulley / Drums, Two Lifting Lifting Pulley's Mechanical Advantage, Multiple Pulley's Lifting Mechanical Advantage Mechanical ...

How to Design a Drive Shaft - Drive Shaft Design for a ...

2009-7-19 · Shaft is a basic mechanical component. The concept of drive shaft design formula is explained in this article with an example shaft design problem.You can see a shaft in almost every machine, which has rotating parts. Typically a shaft has circular cross section. However, shaft with other cross sections find special application. We will discuss the design concept of a drive shaft

Underground Mining Methods - UFRGS

2009-12-7 · General Mine Design Considerations Vertical benching 'llar Il Benching Of thiêker parts FIGURE 1.2 Classic room-and-pillar mining this chapter; the goal of this chapter is to summarize briefly the characteristics of the major mining methods. 1.3.2 Room-and-Pillar Mining Room-and-pillar mining is designed for flat-bedded deposits of

Geotechnical Design Considerations For Mine Shafts | SRK ...

Geotechnical Design Considerations For Mine Shafts | SRK Consulting. The design, development and operation of a shaft system is a critically important element in mining, and needs specialised technical input. Experience has shown that the consequences of damage to shaft systems caused by geotechnical factors are serious and costly.

Md-17 Shaft Design - University of Northern Iowa

2007-8-15 · 1 August 15, 2007 1 17. Shaft Design Objectives • Compute forces acting on shafts from gears, pulleys, and sprockets. • Find bending moments from gears, pulleys, or sprockets that are transmitting loads to or from other devices. • Determine torque in shafts from gears, pulleys, sprockets, clutches, and couplings. • Compare combined stresses to suitable allowable stresses,

Rock Mechanics Study of Shaft Stability and Pillar Mining ...

2012-8-30 · A U.S. Bureau of Mines case study of pillar recovery in high-grade ore near the Ross shaft at the Homestake Mine, Lead, SD, has demonstrated the usefulness of the finite-element method for evaluating shaft pillar mining plans and shaft stability. In this study, borehole extensometers and other instruments were installed to provide data

Shaft Design - University of Florida

2003-11-14 · Shaft Design Chapter 12 Material taken from Mott, 2003, Machine Elements in Mechanical Design Shaft Design • A shaft is the component of a mechanical device that transmits rotational motion and power. • It is integral to any mechanical system in which power is transmitted from a prime mover, such as an electric motor or an engine, to other

Design and Analysis of Central Drum in Mine Hoist

2016-9-9 · "State-of-art shaft system as applied to Palaborwa underground mining project", The design of a 30,000 ton per day underground mine at Phalaborwa presented many and various challenges to the owner and the design team. Using modern best and proven practice, innovative engineering, extensive test work and verification by worldwide experts

Handbook to best practices for mine shafts protection

2015-3-27 · For old mine shafts, galleries may have been closed with remaining items but without particular design. Because of various causes, for example concrete segregation or poor lining design, a failure of this deep closure structure can occur allowing the filling material to spread into the galleries, resulting in a collapse of the shaft. ...

Machine Design: LESSON 14 DESIGN OF SHAFTS

Shafts are designed on the basis of strength or rigidity or both. Design based on strength is to ensure that stress at any location of the shaft does not exceed the material yield stress. Design based on rigidity is to ensure that maximum deflection (because of bending) and maximum twist (due to torsion) of the shaft is within the allowable limits.

Sinking and equipping inclined shafts of more than 60 ...

2020-10-28 · shafts are more often put down in soft rock and pass through faulted zones, whereas, the vertical shafts are usually in the fir.m wall rock. However, in. any. well con­ structed shaft,where the walls are reasonably firm, shaft maintenance is a relatively small item of the mining expense and the lower first cost of the inclined shaft might easily

Pillar design - QueensMineDesignWiki

2019-6-28 · The edge of the shaft pillar will be highly stressed as it is an abutment to mining, but the interior is mostly at a uniformly lower stress level. The following graph is based on the previous one, in which the constant interior stress magnitude region is used as a design constraint.

Underground Mining Methods - UFRGS

2009-12-7 · General Mine Design Considerations Vertical benching 'llar Il Benching Of thiêker parts FIGURE 1.2 Classic room-and-pillar mining this chapter; the goal of this chapter is to summarize briefly the characteristics of the major mining methods. 1.3.2 Room-and-Pillar Mining Room-and-pillar mining is designed for flat-bedded deposits of